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Electrical Exam Questions And Answers With Verified Solutions Already Passed!!!
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Electrical Exam Questions And Answers With Verified Solutions Already Passed!!!
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Electrical Exam Questions And AnswersWith Verified Solutions Already
Passed!!!
Basic protection is provided by - ANSWER✔✔Barriers
Fault protection is provided by - ANSWER✔✔Protective earthing
Max voltage drop for 230v - ANSWER✔✔11.5
An RCD Protects against - ANSWER✔✔Earth faults
Max disconnection time for a TN circuit - ANSWER✔✔0.4s
RCDs are not required for - ANSWER✔✔Labelled socket outlets for freezers
When doing insulation resistance test on ref unit what should be disconnected -
ANSWER✔✔Start capacitor
Max % voltage drop allowed - ANSWER✔✔5%
The maximum horizontal clip spacing for a 12mm diameter armoured cable is -
ANSWER✔✔350mm
The derating factor Ci for a cable passing through insulation 100mm thick is -
ANSWER✔✔0.78
The rating factor Cg for a 5 multicore cables enclosed in trunking is -
ANSWER✔✔0.6
The insulation test voltage in VDC for a 230V AC circuit is - ANSWER✔✔500
The rating factor Ca for a 70oC thermoplastic cable in a 35oC ambient is -
ANSWER✔✔0.94
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