Switch Gear And Protection Set 1

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This set of Switch Gear and Protection Multiple Choice Questions & Answers (MCQs) focuses on Switch Gear And Protection Set 1

Q1 | The main function of a fuse is to
Q2 | On which of the following routine tests are conducted?
Q3 | SF6 gas
Q4 | The arcing contacts in a circuit breaker are made of
Q5 | Which of the following medium is employed for extinction of arc in aircircuit breaker ?
Q6 | With which of the following, a circuit breaker must be equipped for remote operation ?
Q7 | Fault diverters are basically
Q8 | A thermal protection switch can protect against
Q9 | Arc in a circuit behaves as
Q10 | Thermal circuit breaker has
Q11 | Relays can be designed to respond to changes in
Q12 | Overload relays are of…… type.
Q13 | Thermal overload relays are used to protect the motor against overcurrent due to
Q14 | Magnetic circuit breaker has ______ trip action.
Q15 | D.C. shunt relays are made of
Q16 | The relay operating speed depends upon
Q17 | In order that current should flow without causing excessive heating orvoltage drop, the relay contacts should
Q18 | Circuit breakers usually operate under
Q19 | Circuit breakers are essentially
Q20 | The current zero interruption, in oil and air blast circuit breakers, is achieved by
Q21 | Air blast circuit breaker is used for
Q22 | An efficient and a well designed protective relaying should have
Q23 | Burden of a protective relay is the power
Q24 | Directional relays are based on flow of
Q25 | A differential relay measures the vector difference between