Electrical & Electronics

Question 1

PCB

Answer 1

Printed Circuit Board

Question 2

A board on which components such as transistors, resistors, and microprocessors can be mounted and contains all the circuitry that electronically manipulates the data that enters and leaves the electronic component.

Answer 2

PCB

Question 3

A PCB specifically designed to provide interfacing between external devices and the component’s central processing unit or microprocessor.

Answer 3

Input/Output (I/O) card

Question 4

CPU

Answer 4

Central Processing Unit

Question 5

The computing part or brains of the electronic component.

Answer 5

CPU

Question 6

The CPUs are contained on a single chip known as ____

Answer 6

Microprocessors

Question 7

The ___ allow systems to be configured to the specific needs of a particular application.

Answer 7

I/O cards

Question 8

In systems with spare I/O cards, the spare cards can be used to ___

Answer 8

Replace a bad card and restore the system to full operation temporarily

Question 9

An electronic device that lights up when electricity passes through.

Answer 9

LED

Question 10

LED

Answer 10

Light Emitting Diode

Question 11

Often used to indicate the operational status of an electronic component.

Answer 11

LED

Question 12

An attachment device that allows for the connection of many different types of electrical and electronic components to a common rail and provides for easy addition and replacement of system components. Also used to provide for a common ground.

Answer 12

DIN or Mounting Rail

Question 13

A fully enclosed component housing.

Answer 13

Electronic module

Question 14

Packages a PCB into a shockproof module

Answer 14

Electronic module

Question 15

Allow the packaging of multiple PCBs, providing flexibility in configuration.

Answer 15

Fully enclosed housings

Question 16

PIM

Answer 16

Peripheral Interface Module

Question 17

An insulating base or slab equipped with terminals for connecting wiring.

Answer 17

Terminal strip

Question 18

A terminal strip is also called a ___

Answer 18

Terminal board

Question 19

Each terminal strip has at least one ___ under which a wire or component lead may be secured.

Answer 19

Machine screw or other fastener

Question 20

Terminal blocks come in a variety of types such as ___, ____, or ____

Answer 20

Screw-fastened, Plug-in, or Rail-mounted

Question 21

Terminal blocks may be numbered to identify ____

Answer 21

Test points that correspond to schematics

Question 22

Screw-fastened and plug-in terminal blocks are commonly found in ___

Answer 22

Terminal connection boxes

Question 23

___ are used in locations where it would not be practical to use a terminal block, such as bridge control panels

Answer 23

Mounting rails

Question 24

To insert or remove a wire from a connection point with a clamping spring, ___

Answer 24

Ensure power is secured, then place a small screwdriver directly into the hole located above the connection point.

Question 25

Many of the connections for a system can be collocated using a ___

Answer 25

Terminal connection box

Question 26

Allow users to configure devices or change their operation by connecting or breaking circuits to implement different functions

Answer 26

Jumper

Question 27

Small piece of plastic and metal that is placed across two circuit ends to make a connection, or removed to break a connection

Answer 27

Jumper

Question 28

When power is applied to the device, it detects which circuits have been opened or closed

Answer 28

Jumper

Question 29

A cable that connects one device to another device or power source

Answer 29

Pin connector

Question 30

Wires in a pin connector can be tested for continuity by ___

Answer 30

putting a jumper between two wires on one end and using a multimeter to test the respective leads on the other end

Question 31

A thin, flat, multiconductor cable that is widely used in electronic systems for connecting devices within the system

Answer 31

Ribbon cable

Question 32

Because of their shape, ___ are ideal for situations where space is limited

Answer 32

Ribbon cable

Question 33

___ in a printed circuit board provide the connection point for additional printed circuit boards such as I/O cards to be inserted

Answer 33

Slots and pin connections

Question 34

Used to identify test points and component locations

Answer 34

Schematics

Question 35

When tracing schematics, begin with ___

Answer 35

A single component that can be located on both the schematic and the equipment

Question 36

The front sheet in a series of schematics will usually contain ___

Answer 36

General notes about the system or the schematics, a list of revisions, and a sheet index/table describing the contents of the subsequent sheets

Question 37

Each sheet in the series has an ___

Answer 37

Identification block

Question 38

An ID block contains ___

Answer 38

``` Title Drawing number Sheet number Scale Revision Manufacturer Platform ```

Question 39

CG drawings are divided into ___

Answer 39

Zones with alphanumeric designators

Question 40

When a drawing continues on another sheet, the schematic will tell you ___

Answer 40

The sheet and if necessary the zone on which the drawing continues

Question 41

To determine test points you should use the ___

Answer 41

Technical publication or manual

Question 42

ESD

Answer 42

Electrostatic discharge

Question 43

The term used to describe the sensitivity of electronic components such as LEDs and circuit boards to static electrical charges

Answer 43

ESD

Question 44

Created when you rub two nonconducting materials together

Answer 44

Static electricity

Question 45

Causes a charge to build up on the surface of the material

Answer 45

Friction

Question 46

A static shock transmits at least ___ volts

Answer 46

3000

Question 47

Many components will be damaged with charges less than ___ volts

Answer 47

1000

Question 48

ESD sensitive components may be protected by what methods?

Answer 48

Grounding Isolation Prevention

Question 49

A means of draining the static charges on your body by use of an antistatic wrist strap

Answer 49

Grounding

Question 50

The purpose of a antistatic wrist strap is to ___

Answer 50

Make sure the operator is at the same potential as the work and the work surface

Question 51

A ___ is included in the antistatic wrist strap to reduce the possibility of a fatal shock occurring if accidental contact with a high-voltage source should occur

Answer 51

10-megohm resistor in the ground wire

Question 52

The wrist strap is conductive and should not be brought into contact with ___

Answer 52

The component

Question 53

___ may be used in addition to antistatic wrist straps

Answer 53

Antistatic mats

Question 54

___ involves the packing of components and assemblies during storage and transportation

Answer 54

Isolation

Question 55

Static charges cannot penetrate containers that are made of ___ or have a ___

Answer 55

Conductive materials | Conductive layer

Question 56

These bags have an inner layer to prevent charge buildup and an outer layer designed to provide static shielding to protect contents from external sources of static charge

Answer 56

Static shield bag

Question 57

Never remove a board from its antistatic packaging unless ___

Answer 57

You are personally grounded

Question 58

Process of elimination

Answer 58

Troubleshooting

Question 59

Involves collecting clues about the problem and using the clues to eliminate the parts of the system that are not the problem

Answer 59

Troubleshooting

Question 60

Two types of checks in troubleshooting

Answer 60

Visual | Operational

Question 61

Fault isolation may be accomplished by ___

Answer 61

Standard wire tracing methods DCV measurements Continuity checks

Question 62

If the problem is isolated to the card level, then the faulty card must be ___

Answer 62

Removed and replaced

Question 63

___ in its simplest for, is an electrical switching device that applies voltage to or removes it from a single load

Answer 63

Control device

Question 64

Used to control electrically driven pumps and regulate liquid levels in tanks

Answer 64

Float switches

Question 65

Pressure and temperature controls have been grouped together because ___

Answer 65

The switching is the same for both controls

Question 66

The difference between pressure and temperature controls

Answer 66

The operation

Question 67

A temperature element in the switch is arranged so that ___

Answer 67

Changes in temperature cause a change in the volume of a sealed-gas or air-filled bulb or helix, which is connected to the actuating device by a small tube or pipe

Question 68

A pressure sensor is also known as ___

Answer 68

A pressure transducer

Question 69

Converts pressure into an electrical signal

Answer 69

Pressure sensor