Question 1

The life saving technique that applied for person who has heart attack or electrical shock or near drowning is:

Accepted Answer

Cardiopulmonary Resuscitation.

Answer

Personal Protective Equipment.

Answer

Electrical Shock hazards.

Answer

Lockout and Tagout.

Question 2

Which one from the following is example of Personal Protective Equipment (PPE).

Accepted Answer

Safety shoes.

Answer

Flexible cable.

Answer

Electric tester.

Answer

Through box.

Question 3

Identify the use of the tool shown in the figure.

Accepted Answer

Bending the PVC conduit.

Answer

Bending the PVC trunk.

Answer

Measuring lengths.

Answer

Cutting PVC conduit.

Question 4

The figure shown represent.

Accepted Answer

Lockout and Tagout.

Answer

Cardiopulmonary Resuscitation (CPR).

Answer

Electrical Shock.

Answer

First aid.

Question 5

What is the main factor for determining the seriousness of an electrical shock?

Accepted Answer

The amount of current passes through the body.

Answer

The light and heat of the shocked person location

Answer

The time of electric shock occurring.

Answer

Type of shocked person clothes.

Question 6

The method of installation shown in the figure is :

Accepted Answer

Method 1 ( buried in concrete )

Answer

Method 3 ( Cable in trunk )

Answer

Method 2 ( on surface of the wall

Answer

Method 4 ( Conductor in cable tray )

Question 7

The figure shown represents:

Accepted Answer

Cable Armouring

Answer

Cable Tray

Answer

Metallic Trunk

Answer

GI Conduit (Metallic)

Question 8

The figure shown represents:

Accepted Answer

Thermal Overload

Answer

MCB

Answer

MCCB

Answer

Fuse

Question 9

The formula used to calculate the resistance of conductors is given by:

Accepted Answer

R = (ρ x L) / A

Answer

R = (ρ) /( A x L )

Answer

R = L /( Ax ρ )

Answer

R = (ρ xA) / L

Question 10

What is the name of the device shown?

Accepted Answer

Kilowatt hour meter

Answer

Fuse

Answer

Service entrance cable

Answer

Main isolator

Question 11

Name the device in the figure shown

Accepted Answer

float switch

Answer

Pushbutton

Answer

Room station

Answer

Bell

Question 12

Name the device in the figure shown

Accepted Answer

Motion sensor

Answer

float switch

Answer

Room station

Answer

Photo cell

Question 13

Name the device in the figure shown

Accepted Answer

Photo cell

Answer

Room station

Answer

Motion sensor

Answer

float switch

Question 14

In comparing with Wet skin , Dry skin of human body has

Accepted Answer

Low resistance

Answer

High resistance

Answer

Same resistance

Question 15

Which one from the following is example of Personal Protective Equipment (PPE).

Accepted Answer

Helmet

Answer

Through box.

Answer

Flexible cable.

Answer

Electric tester .

Question 16

Ohm concluded that , in a DC circuit

Accepted Answer

Current is directly proportional to the voltage.

Answer

Current is inversely proportional to the voltage.

Answer

Current is directly proportional to the resistance.

Answer

Current is inversely proportional to the voltage and resistance.

Question 17

The process shown is :

Accepted Answer

Threading Process.

Answer

Steel pipe bending.

Answer

Fixing die stock

Answer

Steel pipe cutting                                                                .

Question 18

Minimum Size of wire for lighting circuit is

Accepted Answer

$1.5 mm^2.$

Answer

$4 mm^2.$

Answer

$2.5 mm^2.$

Answer

$1.0 mm^2.$

Question 19

Name the intercom device shown in the Figure

Accepted Answer

Door station

Answer

Room station

Answer

Door lock

Answer

Transformer

Question 20

What is the name of the figure shown?

Accepted Answer

Door Lock

Answer

PVC trunk

Answer

Bell Circuit

Answer

Fluorescent lamp

Question 21

The unit of  resistivity of cable is

Accepted Answer

Ohm-meter (Ω.m).

Answer

Voltage.

Answer

Ohm (Ω.).

Answer

Ampere.

Question 22

lamps – bell circuits - exhaust fan - intercom system - ceiling fans - air condition are classified as :

Accepted Answer

Lighting circuits

Answer

Power circuits

Answer

Both circuits

Question 23

In armoured cables, the , armouring is used for :

Accepted Answer

Protection.

Answer

Good shape

Answer

more conductivity

Question 24

The minimum size of wire for AC circuit is :

Accepted Answer

$4 mm^2$

Answer

$2 mm^2$

Answer

$3 mm^2$

Answer

$2.5 mm^2$

Question 25

What is the name of the symbol shown?

Accepted Answer

Push Button

Answer

Door Lock

Answer

Bell

Answer

2 way switch

Question 26

Tripping rate of RCD for power circuit is :

Accepted Answer

0.03A (30mA)

Answer

0.3A (300mA)

Answer

30A (30000mA)

Question 27

The maximum numb of socket on a ring main circuit ?

Accepted Answer

10 socket outlets+2spur

Answer

10 socket outlets

Answer

12socket outlets+2spur

Answer

12socket outlets

Question 28

Which loads is connected to lighting circuit  ?

Accepted Answer

Air conditioner (A/c)

Answer

Water heater

Answer

Socket outlets

Answer

cooker

Question 29

Name the type of p.v.c accessory shown

Accepted Answer

trunk

Answer

Conduit pipe

Answer

p.v.c channel

Answer

Flexible conduit

Question 30

What is the connection of the circuit which  shown the figure?

Accepted Answer

Parallel

Answer

Compound circuit

Answer

Series

Answer

Series and parallel

Question 31

In the circuit shown the power consumed by the load R is

Accepted Answer

2400 watts

Answer

24000watts

Answer

24 watts

Answer

240 watts

Question 32

In the circuit shown the current is equal to

Accepted Answer

I=2 A

Answer

I=3A

Answer

I=0.5A

Answer

I = 10A

Question 33

What is the name of the intercom device shown?

Accepted Answer

Door Station

Answer

Door lock

Answer

Room station

Answer

Transformer

Question 34

Identify the phase  of  shown in the given figure?

Accepted Answer

Three phase

Answer

Single phase

Answer

Multi-phase

Answer

Two phase

Question 35

What is the frequency used according to  Bahrain regulation?

Accepted Answer

50 Hz

Answer

60 Hz

Answer

40 Hz

Answer

30HZ

Question 36

How much trip current of ELCB for power circuit ?

Accepted Answer

0.03 Ampere

Answer

3.0 Ampere

Answer

0.003 Ampere

Answer

0.3 Ampere

Question 37

Which part of transformer is connected to the power supply?

Accepted Answer

Primary coil

Answer

Secondary coil

Answer

Iron core

Answer

Transformer frame

Question 38

The test used to check that there is no break in the circuit connection is:

Accepted Answer

Continuity test

Answer

Earthing  test

Answer

Insulation test

Answer

Polarity test

Question 39

Name the type of switch shown in the picture?

Accepted Answer

Two gang switch

Answer

Intermediate switch

Answer

One way switch

Answer

Two way switch

Question 40

Intermediate switch used to control loads from  ?

Accepted Answer

More  than two location

Answer

Only two location

Answer

Only one location

Answer

None of the above

Question 41

What is the minimum size of wire for power circuit according to Bahrain regulations?

Accepted Answer

$2.5 mm^2$

Answer

$1.5 mm^2$

Answer

$1.0 mm^2$

Answer

$4.0 mm^2$

Question 42

The fluorescent lamp circuit the chock coil is connected in ?

Accepted Answer

Series  with the line

Answer

Series with the starter

Answer

Parallel with the line and neutral

Answer

Parallel with the tube

Question 43

Convert 100 mA to amper.

Accepted Answer

0.1  ampere

Answer

10  ampere

Answer

0.01  ampere

Answer

100000  ampere

Question 44

Calculate the total resistance,   Given:   R1=2 ohms , R2 =2 ohms connected in parallel?

Accepted Answer

1 ohms

Answer

2 ohms

Answer

3 ohms

Answer

4 ohms

Question 45

What is the minimum mounting height above the floor level of socket outlets according to Bahrain regulation?

Accepted Answer

30 cm

Answer

1.73 cm

Answer

2 m

Answer

1.37 cm

Question 46

What is the name of the PVC accessory shown

Accepted Answer

4 way round box

Answer

T- box/ 3 way round box

Answer

Junction box

Answer

Through box/ 2 way round box

Question 47

Calculate the value of current I=? in the circuit .

Accepted Answer

6 amperes

Answer

2 amperes

Answer

3 amperes

Answer

4 amperes

Question 48

the device shown is

Accepted Answer

Three phase main switch

Answer

single phase main switch

Answer

Three phase ELCB

Answer

single phase ELCB

Question 49

What is the minimum ampere rating of circuit breaker for  air conditioning  circuit?

Accepted Answer

30 amperes

Answer

5 amperes

Answer

20 amperes

Answer

10 amperes

Question 50

According to Bahrain regulation no switches must be installed in:

Accepted Answer

Bathroom

Answer

Garage

Answer

Kitchen

Answer

Living room

Question 51

What is instrument used to do continuity test

Accepted Answer

Ohmmeter

Answer

meager

Answer

Voltmeter

Answer

Ammeter

Question 52

What is instrument  used to do insulation test

Accepted Answer

Meager

Answer

Ohmmeter

Answer

Ammeter

Answer

Ohmmeter

Question 53

What is the minimum size of wire for lighting circuit according to Bahrain regulations?

Accepted Answer

$1.5 mm^2$

Answer

$4.0 mm^2$

Answer

$1.0 mm^2$

Answer

$2.5 mm^2$

Question 54

Which of the following loads is connected in lighting circuit?

Accepted Answer

Fluorescent

Answer

Cooker

Answer

Water heater

Answer

Socket outlets

Question 55

What is the minimum height of lighting switch above floor level?

Accepted Answer

1.37 meters

Answer

3.3 meters

Answer

2 meters

Answer

2.5 meters

Question 56

The type of transformer shown is:

Accepted Answer

Step down transformer

Answer

Step up transformer

Answer

High voltage transformer

Answer

Auto transformer

Question 57

Name the type of switch in the given figure?

Accepted Answer

Push button

Answer

Two way switch

Answer

Double pole switch

Answer

One way switch

Question 58

What is the connection of the circuit which  shown the figure?

Accepted Answer

Parallel

Answer

Compound circuit

Answer

Series and parallel

Answer

Series

Question 59

Name the accessory shown in the picture?

Accepted Answer

PVC Trunk

Answer

PVC pipe

Answer

PVC conduit

Answer

Adaptors

Question 60

What is the rating of circuit breaker for Water heater circuit?

Accepted Answer

20 amperes

Answer

10 amperes

Answer

15 amperes

Answer

30 amperes

Question 61

What type of switch is used in AC and WH circuit?

Accepted Answer

Two way switch

Answer

Intermediate switch

Answer

Double pole switch

Answer

Two gang switch

Question 62

What is the minimum size of wire for door lock circuit?

Accepted Answer

$1.0 mm^2$

Answer

$2.5 mm^2$

Answer

$4.0 mm^2$

Answer

$1.5 mm^2$

Question 63

Name the device shown in the picture?

Accepted Answer

Door lock

Answer

Intercom system

Answer

Transformer

Answer

Chock coil

Question 64

How much trip current of ELCB for lighting circuit ?

Accepted Answer

0.3 Ampere

Answer

0.003 Ampere

Answer

3.0 Ampere

Answer

0.03 Ampere

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