Testing And Commissioning Of Electrical Equipment’S Set 9

Electrical Engineering

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This set of Testing and Commissioning of Electrical Equipment’s Multiple Choice Questions & Answers (MCQs) focuses on Testing And Commissioning Of Electrical Equipment’S Set 9

Q1 | For the protection of a large squirrel cage induction motor against single phasenormally
Q2 | The most commonly used method for the protection of three phase feeder is
Q3 | Which is the pilotless protection method for feeder line ?
Q4 | Time graded protection of a radial feeder can be achieved by using
Q5 | Pilot-wire protection scheme is the most economical and provides high speedrelaying for
Q6 | Problems associated with differential protection is/are
Q7 | For the protection of transformers, harmonic restraint is used to guard against
Q8 | The types of faults that occur in electric motors are
Q9 | The main function of under voltage protective device generally employed with amotor starter is to
Q10 | The bias factor S in unit protection synchronous generators
Q11 | In a balanced voltage pilot wire protection scheme if the pilot circuit gets opened,the relay will
Q12 | In a balanced voltage pilot-wire protection scheme, if the pilot circuit gets shortcircuited, the relay will
Q13 | The frequency of carrier in the carrier current pilot scheme is in the range of
Q14 | The frequency of carrier transmitted by microwave pilot is in the range of
Q15 | In carrier current protection the purpose of the wave trap is for
Q16 | As soon as a fault develops in a generator stator, it is essential to suppress field excitation, otherwise
Q17 | Distance protection scheme is preferred over graded lime-lag over-current protection in HV and EHV lines because
Q18 | Requirements of protection power station buildings against direct strokes are
Q19 | The protection against direct lighting strokes and a high-voltage steep waves isprovided by
Q20 | For protection of rotating machines against lightning surge .............is used
Q21 | In between the generating station and consumers a number of transformation andswitching stations exist, these are called the
Q22 | With large reactance interconnector between two power stations
Q23 | In a isolated neutral system, when a single line to ground fault occurs
Q24 | Tap changing transformers are employed for
Q25 | Field failure in an alternator occurs due to
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