1
Q
In most hydroelectric developments, the head and water flow will
A
Fluctuate
2
Q
Intake design of a hydroelectric development has a large effect on
A
All of three: velocity, volume, head
3
Q
A partially clogged trash rack, Will:
A
Cause a decrease in the effective head
4
Q
Wood Stave pipe would probably not be used for:
A
Heads above 500 feet
5
Q
An open conduit system implies
A
The presence of a free surface
6
Q
The best canal cross-section from a hydraulic point of view is defined as the one that has
A
The small smallest wetted perimeter
7
Q
The best hydraulic rectangular cross-section occurs when Y equals
A
B divided by two
8
Q
The least efficient type of highline conduit is that which:
A
Has the greatest effect of the available head
9
Q
Penstock velocities may range from
A
6 to 20 ft./s
10
Q
Steel pipe is used more extensively than any other type for penstock construction because:
A
Of the degree of flexibility, it offers in satisfying design criteria in all of the above areas
11
Q
One of the major advantages of using a pressure tunnel in a power conduit system is that:
A
It permits full use of the available head
12
Q
Negative water hammer pressure is created by:
A
A sudden increase in the demand for water
13
Q
Positive water, hammer pressure caused by a sudden decrease in the demand for water can be eliminated by:
A
Any one of these(search tank, relief, valve, and pressure regulator)
14
Q
Which of the below conditions would probably not cause the water level in the riser of a differential surge tank to fall:
A
A bad rejection
15
Q
Pumped storage type of hydroelectric developments implies a capability for:
A
All of the above
16
Q
Which of the following factors affects the power transmitted by a belt
A
Friction force applied by the belt and speed of belt
17
Q
Generally, the pitch diameter of a V belt sheave is______ the outside diameter
A
Less than
18
Q
Among conventional V belts, the narrowest is designated______, and the widest is designated________
A
A as the narrowest, and E as the widest
19
Q
The advantage of using a group belt instead of multiple belts is that the group belt is
A
More uniform
20
Q
Because of their removable side flanges, spring loaded adjustable sheaves require
A
Lubrication
21
Q
Among the advantages of chain drives over belt drives is the fact that chain drives
A
Are more efficient
22
Q
Roller chains include the following parts
A
Roller, bushing, pin, link, and roller link
23
Q
Offset roller chain differs from standard roller chains in that the side bars are
A
On one end of the link, the side bars are closed together
24
Q
A chain sprocket with a hub on both sides is type_____ sprocket, a sprocket with a hub on only one side is a type_____ sprocket
A
Type C, type B
25
When you install a roller chain, proper procedure includes
Tension on driving side
26
The working depth of a gear is the distance a gear tooth
Extends into the open space between the teeth of a mating gear
27
Diameter pitch of a gear equals
The number of teeth divided by the diameter of the pitch circle
28
The advantages of helical gears over spur gears include
Smooth action
29
Herringbone gears differ from double cut helical gears in that they have___________ the two sets of teeth
No gap between
30
The axial pitch of a worm gear is the linear distance
Between the screw threads
31
The main purpose of a miter gearbox are usually used for changing the __________ , it’s gear ratio is typically about _____ to one
The direction of motion, one to one
32
The main steps in installing a new foot mounted gear drive include
Aligning the equipment
33
The mechanical power of a gear drive is based on the______ of the gear drive
Speed and torque limit
34
The service factor for a gear drive depends on the
Duty cycle
35
The parallel shaft gear drives oil is commonly provided to the gears by means of_________ and pressurized feed
Splash lubrication
36
The most important factors in the selection of a specific type of adjustable speed drive for an application depends on manufacturers, which are
Speed required, the speed range, and the power it must deliver
37
As you forced together the flanges on the input sheet of an adjustable speed belt drive while it’s running, the flanges on the output sheet move________ and the output shaft speed_____
Farther apart, increases
38
An adjustable speed drive can be controlled by an
Gear mechanism, pneumatic, piston, electric motor
39
In adjustable speed drives belts used resemble timing belts In drives that use chain, the chain is similar to a
Leaf chain
40
In a roller type adjustable speed drive the rollers have a_____ shape changes in speed are accomplished by changing the_____ of the rollers
Conical,axial lead
41
To align a new motor with an existing pump, using the reverse indication method, you mount the dial indicators on the coupling flanges located on _____ shafts. Each indicator takes readings from the flanges mounted on the._____ shafts
Both, opposite
42
When aligning three machines, you can align two of them to the third unless doing so would require
Lowering one or both below the support base
43
To align a new motor with an existing pump, using the face rim indicator method, you mount the dial indicators on the coupling flanges located on_______ shafts, each dial indicator takes readings from the flanges mounted on_______ shafts
Only one, opposites
44
When aligning two machines joined by a long shaft, you use______ dial indicators, which you mount on the_____ coupling flanges
Two, opposite
45
What are the advantages of laser alignment equipment over dial indicators?
They are easier faster and more accurate
46
Two major classifications of jaw couplings are the
Rigid coupling and flexible couplings
47
The advantages of chain coupling include the fact that the chain
Can be replaced without disconnecting the coupling hubs
48
If an overload occurs in a machine driven by a sheer pin coupling, the
Sheer pins brake
49
The special features of limited and float couplings include the
Thrust plate
50
Spacer couplings provide certain advantages over ordinary, couplings, including the fact that they
Simplify the process of disconnecting a driving shaft from the driven shaft
51
The purpose of a clutch include
Allow allowing one device to either be connected to another or run independently
52
When a friction clutch operates a______ forces the______ together or apart
Shifting device, plates
53
An over running clutch is useful in equipment, where the driver machine might need to
Run faster than the motor
54
Electric clutches should be used with a load that must
Start and stop frequently
55
In a single impeller fluid clutch, motion is directly transmitted from the driveshaft in which sequence
1. impeller, 2. fluid, 3.clutch housing
56
Which of the following can only be cut on a power hacksaw or horizontal bandsaw
Round stock
57
The major advantage of a bandsaw over a hacksaw is that the band saw
Makes no wasted motion
58
When you install the band in a horizontal band, saw the teeth must point
Downward and to the right
59
When you set up a light duty, horizontal bandsaw, how will you set the band speed?
By changing the drive belt position
60
When preparing to make a cut with a horizontal bandsaw, which of the following is the final step you will take?
Move the head control lever to release
61
If the vertical band saw you use requires solid, one piece guide inserts, you must select a pair of upper and lower inserts to match the
Width and thickness of the band
62
When you set the blade of a vertical bandsaw, make sure the teeth in your right hand should point
Downward
63
Before you use a vertical bandsaw, an essential safety requirement is to make sure that
All guards are in place
64
As you approach the end of a cut made on a vertical bandsaw you should
Reduce the feed pressure
65
Which of the following is a major feature of a sensitive drill press
The fee is directly under the operators control
66
Before you change from one tapered shank, drillbit to another, make sure to
Clean the chips from the shank or spindle
67
Which type of drilling machine can be used for boring operations
A radial drill
68
What is a good rule to follow in planning the order of machining steps
Plan the order that requires the fewest changes in set up
69
When securing the workpiece on a drill press table, before you tighten the vice jaws, you should
Tap the workpiece lightly to see it
70
For drilling holes over.5 inches in diameter, you should use either
Gearhead or radial drill press
71
You must drill a half inch hole in a work piece of a hard cast-iron (SFPM 70) what is a good approximate spindle speed?
SFPM times four divided by tool diameter equals 70×4÷.5 equals 560
72
If your drills cutter edge chips, as you begin you project, the most likely cause is an
Excessively high feed rate
73
You back a large diameter drill out of a thick stock, periodically and clear out chips to avoid
Breaking the drill
74
When you counter bore a hole, you should use a boring bit with a pilot whose diameter is
The same as the existing hole
75
When you leave a horizontal shaper, even if the project you are working on is not complete completed you must
Remove the cutting tool
76
To help ensure safe shaping operations, which of the following should you do before you operate a shaper
Set the transmission on the slowest speed
77
Which of the following must you do before mounting a workpiece in the shape of vise
Indicate in the vice or (Work) table
78
When you mount a block shaped workpiece in a shape vice, the last step in seating, the workpiece is to
Tap the work lightly with a soft mallet
79
When preparing to use the shaper, which of the following should you do first?
Set the proper length of stroke
80
Calculate stroke rate setting for a crank type horizontal shaper with a 5 inch long piece of cold steel C equals 40 SFPM
N equals CS times seven divided by L +1:40×7÷(5+1) = 40 6.6
81
The total over travel made by the ram at both ends of its stroke. Actual overtravel is.
3/4 of an inch
82
An absolutely essential safety practice is to use with shapers
Wear proper eye protection
83
Which of the following operations is especially well suited for a horizontal shaper, and is usually not possible to do anything in any other machine
Cutting internal slots and key Waze
84
All of the following can be finished with a surface grinder, except
Shoulders on a cylinder
85
An essential requirement for beginning a grinding project is
Surplus material for grinding
86
When dressing, a grinding wheel set the dressers so that the arrow points in the direction, positioned the grinder saddle and lower the wheel until it’s______ touches the diamond
High point
87
When grinding a long rectangular workpiece the first operation on the V block is to grind the____ this is usually the longest surface of the workplace
Basic flat surface
88
The last step in setting up a workpiece on the surface grinder is
To turn on the coolant
89
What is recommended in the allowance for finishing cuts in general purpose grinding
.0005 to .001
90
To achieve a cutting speed of 4500 SFPM with a 9 inch wheel you would need this RPM
RPM equals SFPM divided by wheel circumference: 4500÷9 = 500 RPM
91
General purpose, grinding you can calculate the approximate RPM you need for a work fee by using the equation
RPM = SFPM X 4/ by workpiece diameter
92
In order to hold a workpiece securely between centers on a cylindrical grinder, you must
Provide enough pressure from the foot stock
93
When the width of the wheel is greater than the length of the area to be ground, the procedure to use is
Plunge grinding
94
One feature common to all types of horizontal boring MILLS is the
Headstock column
95
An optional component that enables you to bore from several different directions without changing, set up on a table type mill is
A rotary table
96
An advantage of a stubborn bar over a line boring bar is it
Decreases vibration
97
When working a small bore with a light boring bar you need a cutter with
Great back rake and side rake angles
98
When measuring alignment unfinished surfaces use dial indicators to measure alignment and the work piece is adjusted until the dial indicator reading
Remains constant
99
When you re-aline a piece having a pre-achieved hole, and using a dial indicator mounted in spindle your checking for
Concentricity
100
When setting up a line boring operation measurements are usually made from the layout lines to the
Boring bar
101
If you cannot withdraw the bar to check board diameter use
Inside calipers
102
The machining of long work areas to obtain or rough a semifinished board hole is a particularly advantageous operation called
Multi point boring
103
Which operation requires the use of power cross slide tool head
Facing 
104
Always check the lathe bed to make sure it is
Level
105
You should always cut off bar stock for machining:
Slightly longer than needed
106
Longer work pieces on a lathe should be
Mounted between centers
107
When installing a face plate on a lathe
Screw it on by hand
108
Always select a lathe Dawg
That is not larger than necessary to accept the work piece diameter
109
When facing use a half center to:
Allow clearance for cutting tools
110
Be sure the tale of the lathe dog
Does not sit on the bottom of the face plate slot
111
Make sure the cutting tool of a lathe:
Does not hang out excessively from the tool holder
112
The cutting speed and feed on a lathe should always be
Imbalance, calculated to get the best possible finish, in accordance with tables and charts provided by manufacturers
113
When moving the cutter into the workpiece during facing
Be careful not to strike the dead center
114
When rough turning between centers, always remember that your depth of cut will
Reduce overall diameter by twice the amount of cut
115
Always use a right hand tool when
Cutting right to left
116
Depending on the hand of the cutter, the tip of the tool is pointing_____ toward the tail stock
Four or 5°
117
In rough turning, the cutter point should be positioned______ center line
5° above the work piece
118
A basic rule to remember about the speed/feed relationship is with a constant depth of cut
Any increase in cutting speed will decrease speed
119
The most accurate way to test if adjustments are needed in your tool setting is
A trial cut
120
When reversing work end to end between centers:
Protect the machine surface from the lathe dog
121
Always take your finishing cut:
In the same direction as the rough cut
122
When a aligning, the cutting tool for a finishing cut
Set the cutting tool above the center line of the work
123
When a shoulder is to be turned close to the ends of the workpiece use
A hermaphrodite caliper to measure location
124
The bent leg of the hermaphrodite caliper is placed against the_______ of the workpiece
Face end
125
In order to lay off shoulder length, more accurately, when making more than one identical, use a
Parting tool
126
Filleted shoulders are turned with a_____ cutting tool:
Round nose
127
Different size fillets are made by changing:
Nose radius of the cutters
128
Square shoulders on a shoulder are needed when
Other machine parts will be mounted against them
129
Undercuts always ensure
Square corners
130
The knurling operation always
Deforms the surface of the work piece
131
Pitch knurling tool will produce a_____ grade knurl
Medium 21 pitch
132
On a finished work surface, filing is usually done to______ From the (Work) surfaces
Remove tool marks, or other irregularities
133
The split nut assembly is used only
When cutting threads
134
Never engaged the split nut
When any other automatic feed mechanism is in operation?
135
The_____ of the single thread screw is measured from a point on one thread to the exact same point on the next thread parallel to the screw axis
Pitch
136
The______ of a thread is the distance which a point on one thread travels during one revolution of the screw
Lead
137
When threading a long, slender workpiece, they should always be
Supported with a follower rest
138
When cutting national threads, the compound rest should always be set at an angle of
29°
139
The part of the lathe, which can perform the same function as a thread cutting stop is
The micrometer collar
140
How many divisions are marked on a thread dial indicator?
Eight divisions 
141
In cutting right hand threads, the cutting tool is always fed
Right to left
142
Approximately 5/8 inches per foot taper it is used on the shanks of twist drills, reamers, and MILLS, lathe centers it is called
Morse taper
143
A taper who’s calculation depends on its assigned number in the form of a numerator over a constant denominator of 8,10 or two is
Jarno taper
144
Basic formula for calculating a taper is
T equals D minus D divided by L
Where T equals taper per inch?
Capital D equals large diameter
d equals small diameter
And L equals length
145
The taper turning method which requires the work to be removed from the lathe for set up is
The tail stock set over method
146
When using the taper attachment method The amount of inward and outward feed on the compound rest is controlled by the angle, setting of the
Guide bar
147
When using the taper attachment method, this requires you to always__________ when using a plain taper attachment
Disconnect the crossfeed screw
148
The key to using the compound rest method for turning a taper is the fact that the compound rest
Can swivel
149
The compound rest method for turning tapers requires working with angles because
Since the base of the rest is graduated in degrees
150
When making these adjustments and settings, make sure you back the compound rest all the way out in order to
Have full travel
151
Along with using a series of trial cuts, the most accurate way to obtain angular settings for taper turning is the
Dial indicator in Verneer Beville protractor method
152
Straight turning is performed by machining a workpiece to the same diameter along
The entire length of the work piece
153
A groove or undercut at the diameter change to ensure grinding up to the square face of a large diameter is a
Relief notch
154
The most common method for turning tapers larger than 3 inches per foot is the_______ method
Compound rest method
155
When facing a workpiece that is short, you should mount it
All of the above, Chuck, in a collet, in a mandrel
156
When facing work between centers, use a half center in order:
Provide clearance for the cutting tool
157
To make sure that board and counter board holes are concentric:
Always use the same lathe set up
158
When boring large and irregularly shaped work pieces you should use
A horizontal boring mill
159
Which of the following methods can be used for boring tapers
Compound rest method
160
The most accurate method for boring tapered holes on a lathe is
The taper attachment method
161
The shape of screw threads cut on a lathe is determined by the
Profile of the cutting tool tip
162
The most common way to drill in a lathe is to mount the drill
In the tail stock quill
163
When drilling long holes or working with bulky or cumbersome work pieces, you should mount the drill
In the lathe head stock
164
The most accurate way to drill in a laid is
Drill with the drill, held stationary and the workpiece rotating
165
The machine most often used for drilling jobs in which a high degree of accuracy is not needed is
Sensitive drill press
166
Use a radial drill press when the workpiece
Is too large or bulky for an upright drill press
167
The major difference between spot facing and counter boarding is spot facing:
Remove less metal
168
Boring is done in a drill press by installing a boring bar in a
Boring head
169
Used drill jigs when
The same holes to be repeated a number of times
170
Reaming can be done:
All of the above, by hand, by drill, press, by lathe
171
Honing is done with the use of
Very fine abrasive stones
172
Machining a groove in the surface of a flat piece of metal is an example of_____ milling
Side
173
Machining, angular, concave, and convex cuts into metal work pieces are examples of______ milling
Profile
174
Face milling cutters that are less than 6 inches in diameter are often called
Shell and MILLS
175
Machining key waves for a standard woodruff key is a common example of
Slotting
176
The primary advantage of shaping as opposed to milling is
All of the above, less cost, tools are easily made, tools are more accessible
177
A slaughter is actually the same thing as an
Vertical shaper
178
The cutting action of the broaching machine is done by
Pushing or pulling horizontally
179
The cutting teeth on a brooch
Increase in height from the end of the tool first entering the (Work) to the end, entering the (Work) last
180
Surface grinding is done in order to
All of the above, very fine finishes, produce “tolerances, remove metal from a work piece that is too hard for normal machine
181
The main advantage of using a vertical grinding machine is that
A greater area can be done in less time
182
Angular dimensions are measured in
Degrees and minutes
183
Care must be taken when working with angular intolerances because
The spread gets larger as the distance from the center increases
184
In a unilateral system of specifying tolerances only_______ are given
Plus and minus
185
Tolerance stack up must be calculated when working with
Multiple dimensions on one workpiece
186
A rough cut removes excess and allows enough material for
The finishing cut
187
When taking rough cuts, you must take finishing operations into account or
The finishing cut May be undersize
188
The type of surface finish made by a machine tool is influenced primarily by
All of the above, vibration between the workpiece and the tool, feed Mark’s left by the shape of the cutting tool, the way chips are formed by the tool
189
A surface averaging instrument measures
Average roughness of surface texture
190
The ease or difficulty with which you can remove metal from a workpiece is called
Machinability
191
Brittle metals like cast-iron form chips that are______ chips
Discontinuous
192
When selecting cutting fluids, you should always consider
All of the above, use of the correct type of fluid, use of the proper amount of fluid, the correct point of fluid application
193
Solid lubricants are mostly used on
Hacksaw and bandsaw blades
194
With a careful study and analysis of the total job you can find
Machine efficiency
195
After a list of operations has been made for a specific job, the next step is to
Make the best operational sequence
196
For MAX working efficiency, always tried to 
Use the same machine for as many operations as possible
197
Specifically designed fixtures and attachments can be justified when
All of the above
198
Always try to select a machine, which is a little oversized for a job and enough power to perform the job because
It should not be over extended and stayed away from its extreme limits
199
When choosing a machine for a given operation
All of the above
200
A universal horizontal milling machine differs from a plain horizontal milling machine in that it has
A table swivel
201
The spindle of a horizontal milling machine is on the
Column
202
On a horizontal milling machine, the table and saddle are supported by the
Knee
203
The purpose of a vertical mailing attachment is to enable you to mount cutters:
In a vertical position
204
A milling machine spindle speed is always expressed in
RPM
205
In order to compute spindle speed in RPM you must first have the
All of the above, conversion from foot to inches, cutter, diameter, cutter speed
206
Round shafts to be mailed are usually mounted in
A V block
207
A mailing cutter speed is the rate at which a particular tooth
Passes over the workpiece surface
208
The graduations on the swivel base of a milling machine vice allow you
To align the work piece at any angle
209
A slab milling cutter is designed for taking______ cut
Heavy cuts
210
Right hand helix means that the
Cutter teeth spiral to the right
211
A left-hand cut means that the
Feed is from left to right
212
The style B arbor has a
Bearing sleeve
213
A style B arbor is held in the spindle with a
Draw bar
214
The arbor nut should never be tightened unless the arbor support is in position because
The arbor can be sprung
215
To find spindle speed in RPM you must know this equation
RPM equals SFPM times four divided by D
216
Which of the following is not a factor in making a rough cut efficiently?
The length of the workpiece
217
If you stop the automatic feed before a cut is finished on a mill always
Stop the cutter rotation
218
In order to increase surface quality on a finished slab milling cut, lower the feed rate and
Maintain the same spindle speed
219
The first step in milling, the T slot is two mil
The slot or groove in the workpiece
220
In a horizontal set up, what kind of cutter is used to mill the vertical slot?
Side mill
221
To align the cutter exactly over the top of the intended slot by subtracting 1/2 of the cutter with from the
Distance between the slot center line and the edge of the workpiece
222
You can fit a T slot cutter into the spindle by using a
Adapter
223
When you are completing a T slot with the T slot cutter held in the horizontal spindle you must
Set the work piece up on its side
224
To be the edge of a work piece in a horizontal set up what kind of cutter is used?
A single angle mill
225
What kind of cutter is used to mill a slot in a vertical set up
End MILLS
226
When mailing the T swap with a vertical set up as compared with the horizontal set up, you should use
The same T slot cutter
227
To Ingle Mill a workpiece in a vertical set up what kind of cutter would you use?
End mill
228
The difference between milling a T-slot and milling a dovetail is the difference between the
Cutter shapes
229
In straddle milling, the distance between the cuts is controlled by
Spacers between the cutters
230
The greatest advantage to straddle milling is that you
Save time
231
In straddle milling in order to balance the thrust load on the arbor half side milling cutters should have
Opposite helix angles
232
Which of the following is the most precise method of finding out how wide the end of an angled set up measures
Trigonometry
233
When you select a cutter for an angled step, you should always select the smallest cutter that will cut the wide end of the step because it
Is less expensive?
234
A cutter used to mill an angled step must be wide enough to
Cut the wide end of the step
235
If you cut a key seat for square keys, using an arbor mounted side milling cutter you would produce
A key seat with feathered ends
236
Woodruff key seats and keys are
Standardized
237
The last two digits on a Woodruff key shows the cutter diameter in
Eighths of an inch
238
What would you use to make a plunge cut?
A two fluted end mill
239
A plunge cut allows you to use the cutter in the same way you would use a
Drillbit
240
The best way to mill squares on round work without using a dividing head is to use______milling
Straddle
241
To determine the largest square that you can cut out of any shaft, multiply the diameter of the shaft by
0.707 a constant
242
If the space between two straddle cutters is slightly too narrow, you can increase it by installing
Shims
243
The procedures for milling a tang is basically the same as milling
A square
244
If a single flat surface on a round shaft is usually machined with a
Plain milling cutter
245
The jaws of the three jaw, universal Chuck, close and open
In unison
246
The jaws of the four jaw independent Chuck can_____
All of the above
247
The quickest and most convenient Chuck to set up on the lathe is
The three jaw, universal truck
248
The size of the lathe Chuck is designated by its
Diameter
249
Before mounting a Chuck always placed a board across the
Ways
250
When you install a chuck on the spindle, you should never use______
Power from the lathe
251
A Chuck mounted workpiece must be centered with the work access parallel to the lathes
Center
252
An exact reference for centering oddly shaped work pieces in a chuck is the
Dead center
253
The type of work that can be held in a collet chick is limited to
Small diameter work
254
The Mandrell is mounted_______ in the lathe
Between centers
255
Facing a workpiece gives it square ends and a
Reference surface
256
Which angle is the most important on a facing tool?
The side rake
257
When facing you should set the tool on the work pieces
Center line
258
When facing a large area on a workpiece, use the
Automatic feed
259
The rough cut is intended to remove material from the workpiece
Quickly
260
The roughing cut must leave enough material to make a good
Finishing cut
261
A Rough turning tool does not make a good
Finishing cut
262
The proper use of cutting fluids allows you to
Increase cutting speed, make deeper roughing cuts, and save machining time
263
A trial finish cut is just like a trial rough cut except that you are looking primarily for:
Surface finish quality
264
The basic difference between the finishing tool and the rough turning tool is the finishing tools
Rounded point
265
Boring a hole in a workpiece makes a whole larger and
Trues it
266
A board hole and the circular path in which the tool and workpiece is rotating are always
Concentric
267
The end clearance on a boring tool bit prevents the
Heal from rubbing
268
Within practical limits, always use a boring bar with the
Largest possible diameter
269
The type of corner produced as the end of a board hole is determined by the
Cutting tool profile
270
When you bore a hole, you should offset the compound rest to an angle of______ degrees
60°
271
During boring operations, a chip buildup should be cleaned out only when the lathe is
Completely stopped
272
, forming a recess at the top of an existing hole is called
Counter boring
273
The counter board must be concentric with the hole you have just
Bored
274
Counter boring procedures are the same as those for
Boring
275
Machining a recess between two sets of internal threads, separates the threads and
Provides chip clearance
276
The diameter of the hole to be threaded must be equal to threads
Minor diameter
277
When threading a board hole, be sure that you allow for
Tool clearance
278
The thread cutting tool must be grounded to the particular
Thread form
279
For right handed thread cutting, the compound rest must be rotated to the left_______ degrees
29°
280
How many different methods are there of a taper on a lathe?
Two methods
281
When you use the compound rest method to bore a taper, you must rotate the compound to an angle of
1/2 of the included angle
282
Of all the methods available to machine a taper on a lathe, which of the following is the most accurate
The taper attachment method
283
The telescopic taper attachment differs from the plain taper attachment in which of the following ways
A crossfeed screw that telescopes internally
284
A face plate provides a reference surface that is perpendicular to the lathes
Spindle axis
285
When truing a face plate, you should select a
Broad nosed tool
286
L large work pieces that pose mounting problems in a Chuck can be mounted on a face plate with 
Face plate jaws
287
Face plate clamps are inserted into
Face plate slots
288
To prevent a workpiece from shifting backwards on a face plate, you should
use a Driver
289
Work pieces that cannot be held against the vertical surface of a face plate should be mounted on a
Angle plate
290
You can offset the weight of an angle plate by using a
Counterweight
291
Each half of the clamp on a V block angle plate has
V shaped jaws
292
Using a specialized mandrel for machining eccentric circular areas has more than one set of
Center holes
293
When you bore very large work pieces, such as motor housings, on a lathe, you should mount them
On the carriage
294
A typical application for a dividing head is the milling of a
Gear
295
The index holes around the spindle of the dividing head are used in——-indexing
Direct indexing
296
Divide index holes by number of notches to equal the amount of rotations for example, if an indexing had plate has 24 holes, divide that by four notches on the plate which would equal one full rotation is
Six rotations of the crank
297
If a dividing head has 40:1 gear ratio, how many times must you turn the worm to move the spindle 1/4 of a complete revolution
10 rotations
298
How many crank turns are needed to index each of 12 equals cuts on a workpiece the formula is T equals 40 divided by number of equal divisions on the work
T equals 40÷12 = 3 1/3
299
When selecting an index plate on which one or more of the circles has a total number of holes that is divisible by: 
The number of turns
300
On a dividing head with a 40 to 1 ratio one turn of the index crank moves the spindle with the formula equaling 360° on the spindle divided by 40 equals
9°
301
For simple angular indexing on a 40 to 1 dividing head use any circle in the index plate with a total number of holes that can be divided by nine for example 27, 36 45 or
54
302
Compound indexing differs from simple indexing, and that you:
Turn the index plate itself
303
Differential index is similar to, but more accurate than
Compound indexing
304
What makes a universal dividing head different from a plain dividing head
It’s spindle nose can be rotated 90° from parallel
305
When mounting work on the one to one head center, you assure a positive flow of power from the one to one head spindle to the work piece by using a
Driver and milling machine dog
306
When using a truck to hold a workpiece on the one to one head, you can give the workpiece extra support with a
Steady rest
307
How many times must you position the work piece if you straddle me a hexagonal workpiece
Only three times
308
Why should you insert a cap over the spindle opening?
To keep chips out of the spindle
309
When using the direct indexing method, you should not
Count the zero hole
310
To use the plain indexing method, the worm and worm gearing in the dividing head must be
Engaged
311
Indexing the work piece when plane milling, which side of a hexagonal work piece should you mail after taking the first cut?
The opposite side
312
The dividing head is useful for drilling holes in:
A circle
313
Compute the OD of a 30-tooth spur gear blank with a diametral pitch of 6
Formula = OD= (N+2)/6
(30+2)/6=5.333
314
Which of the following factors does not affect cutter selection for milling spur gears:
Whole tooth depth
315
A series of eight cutters has been developed to suit the different number of gear teeth that have the same:
Diametral pitch
316
To index the teeth of a large diameter gear , use a
Rotary table
317
When measuring a newly cut gear over pins you should use a ———- to check the dimension over pins
Micrometer
318
To check spur gear tooth thickness at the pitch circle use a
Gear tooth vernier caliper
319
This is the distance between adjacent helices that are wound on a common cylinder
Helix pitch
320
The lead of a helix it will produced is determined by
The milling machine
321
To mill a helix , you must change gears to link the lead screw of the milling machine with the :
Worm shaft of the dividing head
322
The ratio in of the change gears is 1:1 and the lead of the milling machine is 10” a helix milled would have a helix lead of :
10”
323
How many change gears usually make up a set :
4
324
In the change gear formula how many teeth will the 2 dividing gears have 40/40=A/B and 24/60=D/C then
B&D are driving gears so 40 & 24
325
In order to reverse the direction of gear rotation so that you can mill either a right or a left hand helix use an
Idler gear
326
When using simple angular indexing to mill 15 teeth on a gear how far apart must you space each tooth .
360/15=24
327
In order to obtain proper helix angle when milling a helical workpiece , you must swivel the
Machine table
328
Which of the following is not important for you to know about helical gear you are milling :
Where it will be used
329
When you mill helical gear teeth you should not draw the cutter back through the work because
You could damage the gear tooth surface
330
The tooth dimensions of spur gears are described by circular pitch, what measurement do you use to describe helical gear teeth
Normal Diametral pitch
331
What functions does a cam perform
Cams change the direction of motion of machine parts
332
The follower in a non-positive cam system would not be controlled by
A groove in the cam
333
A rise in distance that one love moves the follower from its starting point as the cam rotates is:
Cam rise
334
The total distance that a lobe on a uniform-rise cam would move the follower if the lobe extended a full 360 is
Cam lead
335
When milling a plate cam you need a dividing head _______
Vertical milling attachment
336
When milling plate cams the dividing head spindle and cutter can’t be:
In a horizontal plane
337
On which side of the workpiece do you position the cutter when milling short-lead cam
On the lower side
338
When milling non-uniform rise cams you should use :
The Incremental-Cut method
339
When you use a center in a dividing head spindle to hold a work piece, you install the other center in the
Foots stock
340
To Mill spur gears you should use______ cutters
Special profile cutters
341
What kind of arbor is used for a shell end mill?
A style C arbor
342
Why should the shell end mill must be wider than the surface you must cut?
Because this avoids surface lines
343
During a finishing cut:
A small amount of material is removed
344
Trial cut should be about_____ far from the end of the work
Quarter inch
345
The American national thread angle is always
60° 
Mech 6th 6 Months Final
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