Question 1

………… is used to measure electrical current

Accepted Answer

The ammeter

Answer

The voltmeter

Answer

The ohmmeter

Answer

The speed meter

Question 2

………… is used to measure the voltage

Accepted Answer

The voltmeter

Answer

The speed meter

Answer

The wattmeter

Answer

The ammeter

Question 3

…………… is used to measure the electrical power

Accepted Answer

The wattmeter

Answer

The speed meter

Answer

The voltmeter

Answer

The ammeter

Question 4

…………….. is used to measure the electrical resistance

Accepted Answer

The ohmmeter

Answer

The speed meter

Answer

The ammeter

Answer

The wattmeter

Question 5

………….. is used to measure the motor speed

Accepted Answer

The speed meter

Answer

The voltmeter

Answer

The wattmeter

Answer

The ammeter

Question 6

………….. is used to measure the frequency

Accepted Answer

The frequency meter

Answer

The wattmeter

Answer

The voltmeter

Answer

The speed meter

Question 7

………… is the unit which used for measuring voltage

Accepted Answer

Volt

Answer

Ohm

Answer

Ampere

Answer

Watt

Question 8

………… is the unit which used for measuring current

Accepted Answer

Ampere

Answer

Hz

Answer

Watt

Answer

Var

Question 9

………… is the unit which used for measuring  resistance

Accepted Answer

Ohm

Answer

r.p.m

Answer

Volt

Answer

VA

Question 10

………… is the unit which used for measuring active power

Accepted Answer

Watt

Answer

Hz

Answer

VA

Answer

Var

Question 11

………… is the unit which used for measuring reactive power

Accepted Answer

Var

Answer

Ampere

Answer

Watt meter

Answer

Watt

Question 12

………… is the unit which used for measuring speed :

Accepted Answer

r.p.m

Answer

HZ

Answer

VA

Answer

Ohm

Question 13

………… is the unit which used for measuring frequency:

Accepted Answer

HZ

Answer

VA

Answer

Ampere

Answer

Ohm

Question 14

………… is the unit which used for measuring torque

Accepted Answer

N.m

Answer

Ohm

Answer

r.p.m

Answer

VA

Question 15

It is converting the prime – mover mechanical power into electrical active power

Accepted Answer

The generator

Answer

Multi-meter

Answer

The transformer

Answer

The motor

Question 16

It is used for holding the armature stampings and windings in position

Accepted Answer

Stator frame

Answer

Stator core

Answer

End plate

Answer

Rotor

Question 17

It is supported by the stator frame and is built up of laminations of magnetic iron alloy

Accepted Answer

Stator core

Answer

Shaft

Answer

Stator frame

Answer

Windings

Question 18

What is the  types of synchronous generator ?

Accepted Answer

salient poles  & non salient poles

Answer

wound rotor

Answer

squirrel  cage rotor

Answer

compound rotor

Question 19

A salient poles rotor is used in

Accepted Answer

Both  low and medium speed

Answer

Low speed alternators

Answer

Medium speed alternators

Answer

High speed alternators

Question 20

A non-salient poles rotor is used in

Accepted Answer

High speed alternators

Answer

Medium speed alternators

Answer

Low speed alternators

Answer

Both low & high

Question 21

The method which used to supply dc power to the rotor windings through slip ring is called

Accepted Answer

Excitation through brushes

Answer

Field poles

Answer

Magnetic field

Answer

Brushless excitation

Question 22

Brushless excitation is used on

Accepted Answer

Larger generators

Answer

Big motors

Answer

All of the above

Answer

Small generators

Question 23

A synchronous generator consists of two main parts , they are

Accepted Answer

Rotor & stator

Answer

Stator & Shaft

Answer

Frame & winding

Answer

Rotor &Bearing

Question 24

In big generators the armature coils are imbedded in slots on the

Accepted Answer

Stator

Answer

Frame

Answer

Rotor

Answer

Shaft

Question 25

Cooling of synchronous generator is done by

Accepted Answer

All Answer

Answer

Hydrogen

Answer

Water

Answer

Air

Question 26

At synchronous generator the fixed part is called

Accepted Answer

Stator

Answer

Rotor

Answer

Shaft

Answer

Bearing

Question 27

At synchronous generator a moving part is called

Accepted Answer

Rotor

Answer

End plate

Answer

Winding

Answer

Stator

Question 28

At synchronous generator the part which give electricity

Accepted Answer

Armature( stator)

Answer

shaft

Answer

Slip ring

Answer

Rotor

Question 29

The ……………… connect between field coils and DC source

Accepted Answer

Slip rings & Brushes

Answer

Brushes

Answer

Slip rings

Answer

Shaft

Question 30

It is used to hold the brush on the slip ring

Accepted Answer

Brush holder

Answer

Slip ring

Answer

Shaft

Answer

Brushes

Question 31

The synchronous speed (Ns) depends on

Accepted Answer

Number of poles &  frequency

Answer

Motor speed

Answer

frequency

Answer

Number of poles

Question 32

The types of induction motors are :

Accepted Answer

Squirrel cage rotor & Wound rotor

Answer

Synchronous motor

Answer

Squirrel cage motor

Answer

Wound rotor motor

Question 33

One of the following is not from the squirrel cage motor uses

Accepted Answer

Hoists

Answer

Work shop machines

Answer

Air compressors

Answer

Centrifugal pumps

Question 34

The information on motor name plate contains

Accepted Answer

All of them

Answer

Power

Answer

Voltage rating

Answer

Phase

Question 35

We can connect more than one generator together in

Accepted Answer

parallel

Answer

Star

Answer

Delta

Answer

Series

Question 36

The brushes made of

Accepted Answer

Carbon

Answer

Steel

Answer

Copper

Answer

Wood

Question 37

The slip rings made of

Accepted Answer

Copper

Answer

Wood

Answer

Aluminum

Answer

steel

Question 38

In induction motor the stator losses are

Accepted Answer

copper losses & core losses

Answer

Mechanical losses

Answer

core losses

Answer

copper losses

Question 39

The speed of the induction motor can be controlled by

Accepted Answer

All Answer

Answer

By changing the electrical frequency

Answer

By changing the number of poles

Answer

By changing the rotor resistance

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