Testing And Commissioning Of Electrical Equipment’S Set 11

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 11

Q1 | Where severe synchronising swing occur, the relay employed is
Q2 | For the protection of lines against faults involving variable fault resistance, thepreferred relaying scheme is a
Q3 | For ground fault we prefer
Q4 | Admittance relay
Q5 | The relay used for feeder protection is
Q6 | Which relay is used to detect and protect internal fault in a transformer ?
Q7 | Which one of the following relay has the capability of anticipating the possiblemajor fault in a transformer ?
Q8 | Zero sequence current is used for relaying purpose only in the case of
Q9 | To prevent mal operation of differentially connected relay while energising atransformer, the relay restraining coil is biased with
Q10 | How many relays are used to detect interphase fault of a three line system?
Q11 | Which is the main relay for protecting up to 90% of the transmission line-length inthe forward direction?
Q12 | For protection of parallel feeders fed from one end, the relays required are
Q13 | Relays can be designed to respond to changes in
Q14 | DC shunt relays are made of
Q15 | In order that current should flow without causing excessive heating or voltagedrop, the relay contacts should
Q16 | Interruption of large currents by relay requires
Q17 | To protect most of the electrical equipment handling low power, the types of relaysused are
Q18 | ............. Relays are used for phase faults on long line
Q19 | ........ Relays is preferred for phase fault on short transmission line
Q20 | The under voltage relay can be used for
Q21 | The single phasing relays are used for the protection of
Q22 | The inverse definite mean time relays are used for over current and earth faultprotection of transformer against
Q23 | In a static over current relay, inverse time characteristics are obtained by
Q24 | In the case of transmission line protection, over current relay is used
Q25 | Directional over current relays have two exciting coils connected across
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