Second year revision source

Quiz by Ali alomran

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106 questions
• Q1
What is the minimum height of lighting switch above floor level?
173 cm
137 m
1.37 cm
137 cm
30s
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• Q2
What is the minimum height of sockets above floor level?
30 m
30 cm
300 cm
0.3 cm
30s
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• Q3
Calculate the resistance ( R ) supplied by 20 volts and the current drawn is 4 A .
5 ohm
2.5 ohm
15 ohm
0.5 ohm
30s
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• Q4
To control a lamp from 10 different places , How many intermediate switch needed
10
8
7
12
30s
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• Q5
The method of cable installation shown in the figure is :
Method 1 ( buried in concrete )
Method 4 ( Conductor in cable tray )
Method 3 ( Cable in trunk )
Method 2 ( on surface of the wall )
30s
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• Q6
The method of cable installation shown in the figure is :
Method 3 ( Cable in trunk )
Method 4 ( Conductor in cable tray )
Method 2 ( on surface of the wall )
Method 1 ( buried in concrete )
30s
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Delete
• Q7
The method of cable installation shown in the figure is :
Method 3 ( Cable in trunk )
Method 2 ( on surface of the wall )
Method 4 ( Conductor in cable tray )
Method 1 ( buried in concrete )
30s
Edit
Delete
• Q8
The method of cable installation shown in the figure is :
Method 2 ( on surface of the wall )
Method 4 ( Conductor in cable tray )
Method 3 ( Cable in trunk )
Method 1 ( buried in concrete )
30s
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Delete
• Q9
The automatic switch shown is :
Photo cell
2 way switch
Intermediate switch
One way switch
30s
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• Q10
What is the name of switch which is commonly used in street and outdoor lighting?
2 way switch
Photo cell
Intermediate switch
One way switch
30s
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• Q11
The maximum number of Socket outlets allowed in the circuit is
9
11
10
12
30s
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• Q12
What is the trip current rating of RCD for lighting circuit?
0.04 A
0.03 A
0.3 A
0.4 A
30s
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• Q13
What is the trip current rating of RCD for lighting circuit?
300 mA
30 mA
0.3 mA
3000 mA
30s
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• Q14
What is the trip current rating of RCD for power circuit?
3 A
0.03 A
30 A
0.3 A
30s
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• Q15
What is the trip current rating of RCD for power circuit?
0.3 mA
300 mA
30 mA
3 mA
30s
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• Q16
Insulation test is carried out to make sure of
That there is power
The quality of insulation between electrical wires
That there is no cut between wires
That all switches are working
30s
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• Q17
Continuity test is carried out to make sure
There is no break in the circuit
line not touching earth
Neutral not touching earth
there is no short circuit
30s
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• Q18
The test used to insure that line wire is connected in the right position in both socket and lamp is
continuity test
insulation test
polarity test
earthing test
30s
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• Q19
The test which is used to make sure of effectiveness of earth wire is
continuity test
polarity test
insulation test
earthing test
30s
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• Q20
The device used to carried out continuity test is
ammeter
meger
voltmeter
ohmmeter
30s
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