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Unit 18 - Prepare for general electrical installations Quiz 4
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Q1
Score: 1
Minimum voltage and current
Maximum voltage and current
Maximum current and low voltage
Maximum voltage and minimum current
Q2
Score: 1
an RCD
a switch
Alarm sounder
Surge protection device
Q3
Score: 1
contacts
ratings
Physical size
method of operation
Q4
Score: 1
Effectively regulate voltage
Control over current
Effectively isolate all active conductors.
Provide effective low impedance
Q5
Score: 1
Lamps
Alarm sounder
Main switch
Emergency lighting system
Q6
Score: 1
Reduce the cost of wiring components
Reduce the length of sub-circuit cables and associated voltage drop problems.
To increase the tripping time if there is an earth fault
To make it more comfortable for the technician
Q7
Score: 1
Isolation
Emergency switching
Functional switching
All of the above
Q8
Score: 1
Capable of breaking the full load of the circuit
Be manually operated directly interrupting the main circuit
Capable of regulating the voltage
Be provided with means of operation capable of latching in the “OFF” or “STOP position”
Q9
Score: 1
Push button on a contactor
Manual operated switch
Miniature circuit breaker
Plug and socket
Q10
Score: 1
That may require independent control
That may require under voltage
That may require over current
That may require over voltage
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