Question 1

Identify the name of part number ( 1 ) from the figure shown.

Accepted Answer

Earth Link Bars

Answer

MCB

Answer

Distribution Board

Answer

Isolator

Question 2

The function part number ( 3 ) from the figure shown is............

Accepted Answer

To turn ON/OFF all circuits from the DB

Answer

To collect all earth wires

Answer

To protect from earth leakage

Answer

To connect all MCB's

Question 3

Identify the name of part number ( 2 ) from the figure shown.

Accepted Answer

MCB

Answer

Isolator

Answer

Distribution Board

Answer

Earth Link Bars

Question 4

The standard voltage of a 3 phase system according to Bahrain regulation is __________.

Accepted Answer

400 volts

Answer

600 volts

Answer

120volts

Answer

230 volts

Question 5

Identify the component shown in the figure.

Accepted Answer

Relays

Answer

Auxiliary Contacts

Answer

Timers

Answer

Magnetic contactors

Question 6

The line to neutral voltage of a 3 phase 4 wires system according to Bahrain regulation is __________.

Accepted Answer

230 volts

Answer

600 volts

Answer

120 volts

Answer

400 volts

Question 7

Identify the name of part number ( 3 ) from the circuit shown.

Accepted Answer

Overload relay

Answer

Start push button

Answer

Stop push button

Answer

Magnetic contactor

Question 8

From the circuit shown, If ON push button is pressed what will happen to terminals 13 and 14?

Accepted Answer

Contact will close

Answer

Contact will open

Answer

De-energize the circuit

Answer

Remain the same

Question 9

From the circuit shown, after pressing the ON push button and then release it what will happen to the motor

Accepted Answer

Motor will continue to run

Answer

Motor will overheat

Answer

Motor will stop running

Answer

Motor will slowdown

Question 10

The main function of a star delta starting of 3 phase induction motor is ________________.

Accepted Answer

To reduce the high starting current of motor

Answer

To increase the voltage

Answer

To reduce magnetic effect

Answer

To increase speed of rotation

Question 11

Which terminals from the circuit shown are use to protect the circuit from overload?

Accepted Answer

Terminals 95 and 96

Answer

Terminals 1 and 2

Answer

Terminals 97 and 98

Answer

Terminals 2 and 4

Question 12

Identify the name of part number ( 4 ) from the circuit shown.

Accepted Answer

3 phase induction motor

Answer

Start push button

Answer

Magnetic contactor

Answer

Fuse

Question 13

Identify the function of part number ( 1 ) from the circuit shown.

Accepted Answer

Protection

Answer

Turns off the motor

Answer

Turns On the motor

Answer

Connects the motor

Question 14

From the circuit shown, the motor is connected in...................

Accepted Answer

Star

Answer

Parallel

Answer

Star and delta

Answer

Delta

Question 15

Incoming  wires to distribution board are connected to __________.

Accepted Answer

Isolator

Answer

Miniature circuit breaker

Answer

Neutral Link

Answer

Earth Bar

Question 16

Terminals A1 and A2 of a magnetic contactors are called ______ .

Accepted Answer

Coil terminals

Answer

Overload trip terminals

Answer

Normally Close contacts

Answer

Normally open contacts

Question 17

Star- Delta starter is used for _______.

Accepted Answer

3 phase motors above 5 HP

Answer

3 Phase motors below 5 HP

Answer

Single phase motors

Answer

DC motors

Question 18

Socket outlets are counted as__________ per point according to Bahrain load requirements.

Accepted Answer

400 watts

Answer

200 watts

Answer

100 watts

Answer

300 watts

Question 19

The power factor of window type AC is _________.

Accepted Answer

0.85

Answer

0.9

Answer

1.0

Answer

0.8

Question 20

Identify the figure shown.

Accepted Answer

Architectural plan

Answer

Execution plan

Answer

Theoretical Plan

Answer

One line plan

Question 21

From table 1.4,  What is the size of Cable to use for a residential unit with 45 KVA demand load?

Accepted Answer

4 x 70 Aluminum

Answer

4 x 240 Aluminum

Answer

4 x 25 Aluminum

Answer

4 x 120 Aluminum

Question 22

From table 1.4,  What is the size of Cut out to use for a residential unit with 73 KVA demand load?

Accepted Answer

160 A Cut – out

Answer

250 A Cut – out

Answer

60 A Cut – out

Answer

100 A Cut – out

Question 23

From table 1.4,  What is the size of Cable to use for a residential unit with 20 KVA demand load?

Accepted Answer

4 x 25 Aluminum

Answer

4 x 120 Aluminum

Answer

4 x 70 Aluminum

Answer

4 x 240 Aluminum

Question 24

Holds the electrical components of DB, switchboards and control panels.

Accepted Answer

DIN Rail

Answer

Bus Bar

Answer

Isolator

Answer

Trunk

Question 25

Identify the device shown in the figure.

Accepted Answer

Current transformer

Answer

Molded case circuit breaker

Answer

Residual current device

Answer

3 Phase transformer

Question 26

Identify the part of the device shown that needs to be energize in order to operate.

Accepted Answer

Coil

Answer

Auxiliary contacts

Answer

Main contacts

Answer

Frame

Question 27

The figure shown operates when energized by _______.

Accepted Answer

3 Phase  400 volts

Answer

Single phase  240 volts

Answer

12 volts power supply

Answer

DC generator

Question 28

Lighting loads are counted as__________ per point according to Bahrain load requirements.

Accepted Answer

100 watts

Answer

300 watts

Answer

200 watts

Answer

400 watts

Question 29

In electrical terminology, HV stands for……

Accepted Answer

High Voltage

Answer

High Velocity

Answer

High Vibration

Answer

High Value

Question 30

In sub-switchboard the  function of earth link is for …....

Accepted Answer

Safety

Answer

Risk

Answer

Troubleshooting

Answer

Hazard

Question 31

In electrical terminology, MCCB stands for……

Accepted Answer

Molded Case Circuit Breaker

Answer

Mini Circuit Breaker

Answer

Measuring Circuit Breaker

Answer

Miniature Circuit Breaker

Question 32

The function of the device showing in the figure is…

Accepted Answer

Connects / Disconnects main power

Answer

Main breaker with multi protection

Answer

Receive main power and distributes

Answer

Converts current to the meter- readable range

Question 33

If coil of contactor is energized and the meter reads  infinity  between main contacts it  means the contactor is ….

Accepted Answer

Not good

Answer

Short circuit

Answer

Good contactor

Answer

Insulated

Question 34

The device that used in insulation test is …..

Accepted Answer

Insulation Tester

Answer

Volt meter

Answer

Clamp meter

Answer

Ammeter

Question 35

Placing of an insulation mat in the switchboard operating area provides

Accepted Answer

Human protection

Answer

Hazard

Answer

Risk

Answer

Unsafe

Question 36

The drawing shown in the figure is a ...........

Accepted Answer

Switchboard one line plan.

Answer

Switchboard Execution plan

Answer

Switchboard Design plan

Answer

Switchboard simulation plan

Question 37

Switchboard and control panel must be operated by……………….

Accepted Answer

Switchboard one line plan.

Answer

Switchboard Execution plan

Answer

Switchboard Design plan

Answer

Switchboard simulation plan

Question 38

It contains electrical components to operate/control the motors and equipment's.

Accepted Answer

Switchboard

Answer

Store room

Answer

Tool box

Answer

Cabinet

Question 39

What is the function of the device shown?

Accepted Answer

Triggers contacts when sensing a change in water level

Answer

Turn on/off the circuit

Answer

Protect the circuit

Answer

Triggers contact when touched

Question 40

From the figure shown, Applying continuity test and the coil is not energized the meter reading is .................

Accepted Answer

Infinity

Answer

20 ohms

Answer

10 ohms

Answer

Zero ohms

Question 41

From the table , How much is the total job cost?

Accepted Answer

123.50 BD

Answer

150.00 BD

Answer

34.50 BD

Answer

89.00 BD

Question 42

From the table , How much is the total cost of materials?

Accepted Answer

34.50 BD

Answer

89.00 BD

Answer

150.00 BD

Answer

123.50 BD

Question 43

The function of the device shown is ____________.

Accepted Answer

To trigger manual alarm for fire when pressed

Answer

Detect smoke

Answer

Sound alarm in case of fire

Answer

Detect excessive heat

Question 44

The function of the device shown is ____________.

Accepted Answer

Detect smoke

Answer

Sound alarm in case of fire

Answer

Detect excessive heat

Answer

To trigger alarm for fire when pressed

Question 45

Identify the device shown in the figure.

Accepted Answer

Fire alarm Control Panel

Answer

Smoke Detector

Answer

Manual Call point

Answer

Sounder

Question 46

Identify the component shown in the figure.

Accepted Answer

Solar Panel

Answer

Inverter

Answer

Battery

Answer

Charge controller

Question 47

The figures shows electrical energy received from _________.

Accepted Answer

Sun

Answer

Nuclear

Answer

Wind

Answer

Water

Question 48

What type of current is received from solar Cell?

Accepted Answer

Direct Current

Answer

Zero Current

Answer

Alternating Current

Answer

3 Phase current

Question 49

Identify the function of the device shown in Solar cell power system.

Accepted Answer

Converts DC to  AC

Answer

Receives energy from the sun

Answer

Regulates charge to the batteries

Answer

Store electrical power

Question 50

Identify the function of the device  shown in the figure.

Accepted Answer

Store electrical power

Answer

Receives energy from the sun

Answer

Converts DC to AC

Answer

Regulates charge to the batteries

Question 51

Identify the device shown in the figure.

Accepted Answer

Over load relay

Answer

Push button

Answer

Magnetic contactor

Answer

Circuit breaker

Question 52

When solar panel connected in series it increases ____________ capacity.

Accepted Answer

Voltage

Answer

Current

Answer

Watts

Question 53

It contains electrical components to operate/control the motors and equipment's.

Accepted Answer

Switchboard

Answer

Cabinet

Answer

Store room

Answer

Tool box

Question 54

The device shown  is called__________.

Accepted Answer

KWH meter

Answer

Volt meter

Answer

Current Transformer

Answer

Air Circuit Breaker

Question 55

What is a mechanically operated electrical switch used in automatic gate?

Accepted Answer

Limit Switch

Answer

One way switch

Answer

Push button

Answer

Float switch

Question 56

Name the control device shown in the figure.

Accepted Answer

Contactor

Answer

Timer

Answer

Overload

Answer

Push button

Question 57

A device used to maintain the proper charging voltage on the batteries in solar power system is called___________.

Accepted Answer

Charge controller

Answer

Inverter

Answer

Battery

Answer

Service box

Question 58

In solar power system which device changes DC to AC?

Accepted Answer

Inverter

Answer

Adaptor

Answer

Charge controller

Answer

Transformer

Question 59

A single solar cell produces only about ______________

Accepted Answer

1/2  Volt

Answer

1  Volt

Answer

2 Volts

Answer

3 Volts

Question 60

A collection of individual solar cells that generate electricity from sunlight is ___________.

Accepted Answer

Solar Panel

Answer

Charge controller

Answer

Inverter

Answer

Battery

Question 61

Solar panels connected in parallel increases the ________________capacity.

Accepted Answer

Current

Answer

Resistance

Answer

Inductance

Answer

Voltage

Question 62

If the solar arrays are connected in series, the output voltages will _______________.

Accepted Answer

Increase

Answer

Turn to AC

Answer

Remain the same

Answer

Decrease

Question 63

Identify the picture shown.

Accepted Answer

Pan Assembly

Answer

Distribution board

Answer

MCCB

Answer

Bus Bar

Question 64

identify the device shown in the figure.

Accepted Answer

Motor starter

Answer

Relay

Answer

MCB

Answer

DB

Related quizzes

Related quizzes