Belonio Flashcards by Jumely Arendon

An engine that burns fuel inside the
cylinder.
a. External combustion engine
b. Internal combustion engine
c. Sterling engine
d. None of the above

Answer – internal
combustion engine

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Part of engine that which slides up and
down the cylinder and transmits power
to the crankshaft.
a. Connecting rod
b. Cylinder block
c. Piston
d. Spark plug

Answer - Piston

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Amount of power that the manufacturer specified for an engine.
a. Indicated horsepower
b. Brake horsepower
c. Rated horsepower
d. Belt horsepower

Answer – Rated Horsepower

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Distance of movement piston from
the top dead to the bottom dead
center.
a. Stroke
b. Bore
c. Valve clearance
d. None of the Above

Stroke

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Reduction of engine speed or flow
of fuel.
a. Throttling
b. Clutching
c. Atomization
d. None of the above

Answer - Throttling

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A device which uses fluid power to
produce mechanical force and
motion.
a. Governor
b. Accumulator
c. Actuator
d. None of the above

Answer - Actuator

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A mechanical breaking up of fuel
into spray droplets by high velocity
of air passing through a jet.
a. Atomization
b. Carburetion
c. Turbo charging
d. None of the above

Answer - Atomization

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A device that is used to actuate the
throttle of an engine to increase its
speed.
a. Governor
b. Accelerator
c. Actuator
d. None of the above

Answer - Accelerator

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Usable power delivered by the
engine
a. Indicated horsepower
b. Brake horsepower
c. Rated horsepower
d. None of the above

Answer – Brake horsepower

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A device that meter the fuel air and
mixes them into harmonious
mixture before the mixture enters
the combustion chamber of an
engine.
a. Governor
b. Air injector
c. Carburetor
d. All of the above

Answer- Carburetor

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A device that permits the flow of
fuel and of burned gases in one
direction only.
a. Check valve
b. Relief valve
c. Spark plug
d. None of the above

Answer – Check valve

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An internal combustion engine that
produces power in one revolution
of the crankshaft.
a. Four stroke cycle engine
b. Two stroke cycle engine
c. Rotary engine
d. None of the above

Answer – Two stroke cycle

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A device that provides ignition to a
gasoline engine.
a. Flywheel
b. Fuel injector
c. Carburetor
d. Spark plug
e. None of the above

Answer – Spark plug

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During the power stroke, which of
the following valve is open?
a. Intake
b. Exhaust
c. Intake and exhaust
d. None of the above

Answer – None of the above

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Number of spark plugs for 6
cylinder diesel engine
a. 6
b. 12
c. 4
d. None of the above

Answer – None of the above

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The volume displaced by a piston
in making upward and downward
stroke.
a. Piston displacement volume
b. Clearance volume
c. Total volume
d. None of the above

Answer – Piston displacement volume

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At the downward stroke of two-stroke
cycle, which of the events are taking
place.
a. Power & intake
b. Compression & exhaust
c. Power and exhaust
d. None of the above

NOTA

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The ratio of the clearance volume
from the total volume.
a. Compression ratio
b. Air fuel ratio
c. Bore stroke ratio
d. None of the above

Answer – Compression Ratio

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Power transmitted to the pistons by
the gas in the cylinder
a. Brake horsepower
b. Indicated horsepower
c. Drawbar horsepower
d. Flywheel horsepower

Answer – Indicated horsepower

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Suppose a 4-cylinder engine has a
bore of 3.5 in. and a stroke of 4.0
in., what is the engine
displacement.
a. 154 in3
b. 175 in3
c. 225 in3
d. None of the above

Answer – 154 in3

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An engine has piston displacement
of 38.4 in3
. If the clearance volume
of the cylinder is 2.5 in3
, what is the
compression ratio?
a. 1:12
b. 1:16
c. 1:8
d. None of the above

Answer – 1:16

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Number of explosion of piston on a
single cylinder, four stroke cycle
engine in 100 revolution of the
crankshaft.
a. 100
b. 50
c. 25
d. None of the above

Answer – 50 explosions

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A device that connects and
disconnects power input to the
power output.
a. Clutch
b. Gear
c. Pulley
d. None of the above

Answer – Clutch

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The space when the piston is at the
top dead center
a. Piston displacement volume
b. Clearance volume
c. Total volume
d. None of the above

Answer – Clearance volume

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How many piston strokes are there in one revolution of a crankshaft. a. One b. Two c. Four d. None of the above

Answer - Two

Engine having fuel injected into the combustion chamber near the end of the combustion stroke and is ignited by heat of compression only. a. Gasoline engine b. Diesel engine c. Steam engine d. None of the above

Answer - Diesel

Number of times the exhaust valve opens in 2-stroke cycle engine running at 2000 rpm. a. 1000 b. 2000 c. 1500 d. None of the above

Answer – None of the above

What is the indicated horsepower, of a four-stroke, six-cylinder engine having a 4” bore and 4” stroke. The engine speed is 1500 rpm and the mean effective pressure is 80 psi

Answer – 45 hp

The sequence by which the cylinder delivers the power stroke. a. Ignition b. Firing order c. Flash point d. None of the above

Answer – Firing order

Engine that burns fuel outside the cylinder. a. Spark ignition engine b. External combustion engine c. Compression ignition engine d. None of the above

Answer – External combustion engine

At the intake stroke of a diesel engine, what come in? a. Fuel and air b. Fuel c. Air d. None of the above

Answer - Air

A device that creates ignition of fuel in a diesel engine. a. Spark plug b. Piston c. Carburetor d. None of the above

Answer - Piston

Two pistons running at the same time in the same direction but performing different strokes. a. Running mate b. Firing order c. Valve timing d. None of the above

Answer – Running mate

How many times the intake valve opens in 4 stroke-cycle engine running at 2000 rpm.

Answer – 1000 times

Two-stroke six-cylinder-internal-combustion engine has a cylinder bore of 4 inches and a stroke of 4 inches. If the engine is running at a speed of 1500 rpm, what is the indicated horsepower of the engine? The mean effective stroke is 80 psi.

Answer – 92 hp

Firing order of 4-cylinder engine. a. 1-2-3-4 b. 1-3-4-2 c. 1-2-4-3 d. None of the above

Answer – 1-3-4-2

A device which connects or disconnects engine crankshaft to the transmission box or driven machine. a. Differential gear b. Clutch c. Actuator d. None of the above

Answer: Clutch

Firing order for 8-cylinder V piston a. 1-6-8-4-3-2-7-5 b. 1-8-7-3-6-5-4-2 c. All of the above d. None of the above

Answer – All of the above

Engine mechanical efficiency. a. Brake hp over indicated hp b. Rated hp over indicated hp c. Friction hp over flywheel hp d. None of the above

Answer – Brake horsepower over indicated horsepower

Number of times the intake valve opens in a single-cylinder fourstroke cycle after completing 200 revolutions. a. 200 b. 100 c. 50 d. None of the above

Answer – 100 times

What is the mechanical efficiency of an engine having a brake horsepower of 8 hp and an indicated horsepower of 10 hp? a. 20% b. 40% c. 60% d. 80% e. None of the above

Answer – 80%

Part of an engine that converts reciprocating motion into rotary motion. a. Crankshaft b. Piston c. Camshaft d. None of the above

Answer - Crankshaft

Engine system that reduces the temperature of the cylinder. a. Ignition System b. Carburetor System c. Cooling System d. None of the above

Answer – Cooling System

System of number indicating the ignition quality of diesel fuel. a. Octane rating b. Cetane rating c. Fuel index d. None of the above

Answer – Cetane rating

Twenty-hp engine is equal to. a. 1524.44 kg-m/sec b. 1254.2 kg-m/sec c. 1425.44 kg-m/sec d. None of the above

Answer – 1524.44 kg-m/sec

Ten-hp engine is equivalent to a. 7.46 kw b. 76.4 watt c. 0.746 kw d. None of the above

Answer – 7.46 kW

A substance that decreases the effect of friction and which is commonly obtained from petroleum products. a. Lubricant b. Gear oil c. Grease d. All of the above

Answer – All of the above

Gear oil is used for a. Engine b. Transmission box c. Hydraulic system d. All of the above

Answer – Transmission Box

Mean effective pressure for turbocharge engine. a. 300 psi b. 200 psi c. 400 psi d. None of the above

Answer – 300 psi

Engine valve that allows the entrance of fuel. a. Exhaust valve b. Intake valve c. Check valve d. None of the above

Answer – Intake valve

If the compression ratio is 1:17, the piston displacement volume for 10 cm3 piston clearance volume is a. 160 cc b. 170 cc c. 200 cc d. None of the above

Answer – 160 cm3

Standard throttling adjustment of an engine. a. 1/3 b. ½ c. ¾ d. None of the above

Answer – 3/4

Mean effective pressure of an engine. a. 120 psi b. 200 psi c. 50 psi d. None of the above

Answer – 120 psi

Number of pistons for 6 cylinder four stroke gasoline engine. a. 3 b. 6 c. 9 d. None of the above

Answer – 6 pistons

Fuel for compression ignition engine. a. Gasoline b. Kerosene c. LPG d. None of the above

Answer – None of the above DIESEL-

A term used to describe the resistance of oil to flow. a. Viscosity b. Cetane Number c. Volume weight d. None of the above

Answer - Viscosity

The speed of the engine is automatically regulated by. a. Hand lever b. Governor c. Flywheel d. None of the above

Answer - Governor

Ignition timing for gasoline engine. a. 1-5 deg b. 5-10 deg c. 10-15 deg d. None of the above

Answer – 5 to 10

Ignition timing for diesel engine. a. 5-12 deg b. 17-19 deg c. 20-26 deg d. None of the above

Answer – 17-19 deg

A type of engine that completes power stroke in two revolution of the crankshaft. a. Four-stroke cycle engine b. Two-stroke cycle engine c. All of the above d. None of the above

Answer – four strokes cycle engine

A type of engine that completes power stroke in one revolution of the crankshaft. a. Four-stroke cycle b. Two-stroke cycle c. All of the above d. None of the above

Answer – two stroke cycle engine

An engine that produce more power per unit weight. a. Four-stroke cycle b. Two-stroke cycle c. All of the above d. None of the above

Answer – two-stroke

An engine which uses oil entirely as lubricant. a. Four-stroke cycle b. Two-stroke cycle c. All of the above d. None of the above

Answer – fours storke

One horsepower can generate heat energy equal to a. 2455 BTU/hr b. 2545 BTU/hr c. 2445 BTU/hr d. None of the above

Answer – 2545 BTU/h

An engine basically has a. Larger cylinder diameter than piston diameter b. Equal piston diameter than cylinder diameter c. Larger piston diameter than cylinder diameter d. None of the above

Answer: Larger cylinder diameter than piston diameter

A part of an engine which reduces vibration and stores energy. a. Spark plug b. Flywheel c. Piston d. None of the above

Answer - Flywheel

If a 4-cylinder, 2-stroke-cycle internal-combustion engine has 600 explosion per minute, what is the engine rpm. a. 125 rpm b. 150 rpm c. 200 rpm d. None of the above

Answer – 150 rpm

Considering that the engine in item above has a piston diameter of 4” and piston stroke of 5”, what is the indicated horsepower of the engine assuming a mean effective pressure of 102 psi. a. 9.7 hp b. 53.3 hp c. 28.5 hp d. None of the above

Answer – 9.7 hp

What is the brake horsepower of the engine in item above if the mechanical efficiency is 80 percent. a. 8 hp b. 31 hp c. 35 hp d. None of the above

Answer – 8 hp

The indicated power of an engine is 69 horsepower. The brake horsepower is 54. What is the mechanical of engine efficiency? a. 69 % b. 78 % c. 59 % d. None of the above

Answer – 78%

What is the thermal efficiency of an engine which uses 0.6-lb of fuel per horsepower-hr. The fuel contain 20,000 BTU/lb. a. 21.2 % b. 34.5 % c. 46.8 % d. None of the above

Answer – 21.2%

The brake constant is a. 2 π R/c b. 2 π RN c. 2 π RFn/c d. None of the above

Answer – 2piR/c

What is the brake constant value of dynamometer whose length of arm is equal to 1m? a. 0.082 sec/kg b. 0.82 sec/kg c. 2.8 sec/kg d. None of the above

Answer – 0.082 sec/kg

A diesel engine four-stroke cycle with three cylinder has a cylinder bore of 89 mm and a stroke of 130 mm. The compression ratio is 16:1 and running at a speed of 2000 rpm. What is the piston displacement of the engine per cylinder? a. 809 cc b. 1320 cc c. 650 cc d. None of the above

Answer – 809 cc

What is the total power stroke per minute of the piston in item above? a. 2000 b. 3000 c. 500 d. None of the above

Answer: 3000 power stroke per min

In item above, what is the total displacement volume of the engine per min? a. 9708 l/min b. 8534 l/min c. 9578 l/min d. None of the above

Answer – 9780 m/min

In item above, what is the piston speed of the engine? a. 520 m/min b. 660 m/min c. 743 m/min d. None of the above

Answer – 520 m/min

In item above, what is the stroketo-bore ratio of the engine? a. 1.00 b. 1.32 c. 1.46 d. None of the above

Answer – 1.46

A four-cylinder gasoline engine has a cylinder diameter of 20 cm and a stroke of 40 cm. The cylinders run at a speed of 150 rpm. The engine is a four-stroke cycle with a mean effective pressure of 8 kg/cm2 . What is the area of the piston? a. 314 cm2 b. 284 cm2 c. 167 cm2 d. None of the above

Answer – 314 cm2

What is the length of stroke of the engine piston in meter in item above? a. 0.40 b. 0.20 c. 0.8 d. None of the above

Answer – 0.40 m

What is the power stroke of the engine per cylinder in item above? a. 50 b. 75 power stroke per min-cylinder c. 100 d. None of the above

Answer – 75 power stroke per min-cylinder

What is the total power stroke of the engine in item above? a. 150 b. 300 c. 75 d. None of the above

Answer - 300

What is the indicated horsepower of the engine? a. 46 hp b. 66 hp c. 56 hp d. None of the above

Answer – 66 hp

If the engine mechanical efficiency, in item above, is 80 %, what is the brake horsepower of the engine? a. 53 hp b. 35 hp c. 65 hp d. None of the above

Answer – 53 hp

What is the stroke-to-bore ratio of the engine in item above? a. 2.0 b. 1.6 c. 2.4 d. None of the above

Answer – 2.0

If a two-stroke 4-cylinder engine is running at 2000 rpm, the power stroke per minute of the engine is a. 4000 b. 8000 c. 2000 d. None of the above

Answer – 2000 strokes per min

Power available on human for useful work. a. 0.1 hp b. 0.5 hp c. 0.3 hp d. None of the above

Answer – 0.1 hp

Domesticated animals used as power for agriculture. a. Dairy animals b. Draft animals c. Game animals d. None of the above

Answer – Draft animals

A person is doing a work for 4 hours, what is the power developed by the person? a. 0.09 hp b. 0.13 hp c. 0.15 hp d. None of the above

Answer – 0.13 h

Conversion of solid into combustible carbon monoxide through thermo-chemical reaction. a. Digestion b. Carbonization c. Gasification d. Pyrolysis

Answer - Gasification

Power generated from moving air. a. Wind power b. Hydropower c. Photovoltaic cell d. None of the above

Answer - Windpower

A gas produces putrefactive bacteria that breaks down organic material under airless condition consisting mainly of methane and carbon dioxide. a. Biofuel b. Biogas c. Gasifier d. LPG

Answer - biogas

Wind is moving at 4 meters per second. If the rotor area is 2 square meters, what is the wind power? a. 80 watts b. 125 watts c. 95 watts d. None of the above

Answer – 80 watts

Average power density of solar heat striking the earth surface. a. 1 kw/m2 b. 0.89 kw/m2 c. 0.58 kw/m2 d. None of the above

Answer – 0.89 kW/m2

One hundred liters per second of water is falling at a head of 10 meters. The turbine efficiency is 80%. What is the hydraulic power of the hydro system? a. 8.7 kw b. 87 kw c. 7.8 kw d. None of the above

Answer – 7.8 kW

A device that converts kinetic energy of the wind to mechanical power. a. Rotor b. Generator c. Motor d. None of the above

Answer - Rotor

A device that converts electricity to mechanical power. a. Rotor b. Generator c. Motor d. None of the above

Answer - Motor

A device that converts electricity from sunlight. a. Windpump b. Photovoltaic c. Generator d. None of the above

Answer - Photovoltaic

Wind machine that is used for lifting water. a. Aerogenerator b. Wind turbine c. WIndpump d. None of the above

Answer - windpump

Power generated from a falling water. a. Hydro power b. Biomass power c. Wind power d. None of the above

Answer – hydro power

Belonio Flashcards

(100 cards)