Electricians Quiz Final Test Flashcards

1
Q

Small solid wire is usually joined by

A

Western union splice

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2
Q

Terminal lugs are used For multi stranded wire True or false

A

True

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3
Q

Conductor lacing is used to group a number of wires into bundles true or false

A

True

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4
Q

Self Clinching Cable straps (stay tied) Should never be used

A

On coaxial cable, in high temperature areas, Were straps may fall into moving components

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5
Q

When troubleshooting electrical equipment you should use a high impedance multi meter

A

To prevent excessive current flow through which would damage it

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6
Q

Describe a mobile man communication system

A

Radio

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7
Q

State the purpose for lacing conductors

A

To keep wires neat And allow easier tracing

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8
Q

Name four way to start a single phase motor

A

Shaded poles, Manually, Capacitors start, Starter windings

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9
Q

Disadvantage of a DC motor

A

Low starting torque In Series

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10
Q

Three ways a DC motor is wound

A

Shunt wound, series wound, compound wound

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11
Q

The greatest single cause of electrical resistance is the

A

High inductance

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12
Q

Which of the listed device is used to measure pressure and convert it to an Electrical signal

A

Transducer

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13
Q

When taking resistance readings the circuit should be

A

De-energized

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14
Q

What meter is used to check for continuity of a electrical circuit or devices

A

Ohms meter

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15
Q

A resistance in a circuit of unknown value is to be tested using the volt meter ampmeter method therefore the meter should be connected with

A

Both meters in parallel with resistance

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16
Q

Electrical Powers is expressed in Ohms true or false

A

False

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17
Q

A device that most commonly utilizes the principals of Electromagnetic induction is the

A

Transformer

18
Q

What is the difference in the construction of high voltage transformers and low-voltage transformers

A

The number of turns in the winding in a step up transformer

19
Q

What three generator Conditions Are needed to Safely parallel to the bus

A

Phase orientation, frequency, voltage

20
Q

What uses magnetic induction

A

Solenoids and transformers

21
Q

What application would a synchronous motor be used

A

Constant speed type

22
Q

Synchronous motor’s uses separate DC Excitation current. True or false

23
Q

LDP devices low-voltage protection device requires an operator to restart it manually true or false

24
Q

How is a generator output voltage controlled

A

AVR automatic voltage regulator

25
What is the smallest USCG Mandated AWG on ships
18 AWG
26
Difference between DC motors and DC generators
Same
27
What system uses a thermistor
HVAC systems
28
What are two common core types for transformers
Shell and hollow type
29
What are we checking when measuring an air gap of a generator
Bearings
30
What semiconductors Change his resistance in a HVAC system
Thermistor
31
What do slip rings do
Supply current to the Armature to the DC motors or transfer between stationary rotating contacts
32
Why Megger
Checking the health of insulation
33
Different winding types in DC motors
Lap winding and Wave windings Lap windings are high current low-voltage Wave windings are high in voltage space efficient and low-cost
34
What are the three losses of transformers
Eddy current copper and Hyatt
35
Four ways to start a AC motor
Shaded pole, starter windings, capacitor, manually
36
Four types of diagrams
Wiring Single line Block Schismatic
37
What is slip
When a rotor can’t catch up
38
What’s a commutator
Dc motor
39
Motors convert electrical energy to mechanical Power using what principle
Voltage induction
39
Interpoles accomplish the same thing as
Compensating winding
40
A inductance reactants load is expressed in
Ohms