Switchgear protections

62. Large internal faults are protected by

merz price percentage differential protection
mho and ohm relays
horn gaps and temperature relays
earth fault and positive sequence relays

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class="read-more button" href="https://exam.pscnotes.com/mcq/large-internal-faults-are-protected-by/#more-48710">Detailed SolutionLarge internal faults are protected by

63. Over voltage protection is recommended for

hydro-electric generators
steam turbine generators
gas turbine generators
all of the above E. none of the above

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class="read-more button" href="https://exam.pscnotes.com/mcq/over-voltage-protection-is-recommended-for/#more-48573">Detailed SolutionOver voltage protection is recommended for

64. Series reactors should have

low resistance
high resistance
low impedance
high impedance

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class="read-more button" href="https://exam.pscnotes.com/mcq/series-reactors-should-have/#more-48404">Detailed SolutionSeries reactors should have

65. Shunt capacitance is neglected while considering

short transmission line
medium transmission line
long transmission line
medium and long transmission lines

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class="read-more button" href="https://exam.pscnotes.com/mcq/shunt-capacitance-is-neglected-while-considering/#more-48397">Detailed SolutionShunt capacitance is neglected while considering

66. Relays are used for phase faults on long line.

Impedance
Reactance
Either of the above
None of the above

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long line." class="read-more button" href="https://exam.pscnotes.com/mcq/relays-are-used-for-phase-faults-on-long-line/#more-48282">Detailed SolutionRelays are used for phase faults on long line.

67. Burden of a protective relay is the power

required to operate the circuit breaker
absorbed by the circuit of relay
developed by the relay circuit
none of the above

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title="Burden of a protective relay is the power" class="read-more button" href="https://exam.pscnotes.com/mcq/burden-of-a-protective-relay-is-the-power/#more-48138">Detailed SolutionBurden of a protective relay is the power

68. With which of the following, a circuit breaker must be equipped for remote operation ?

Inverse time trip
Time-delay trip
Shunt trip
None of the above E. All of the above

Detailed Solution

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class="screen-reader-text">With which of the following, a circuit breaker must be equipped for remote operation ?

69. An isolator is installed

to operate the relay of circuit breaker
as a substitute for circuit breaker
always independent of the position of circuit breaker

Detailed SolutionAn isolator is installed

70. Interruption of large currents by relay requires

arc suppressing blow out coils
wide separation of the opened contacts
high speed opening of contacts
all of the above

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11.4 132.3c6.3 23.7 24.8 41.5 48.3 47.8C117.2 448 288 448 288 448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z"/> Subscribe on YouTube large currents by relay requires" class="read-more button" href="https://exam.pscnotes.com/mcq/interruption-of-large-currents-by-relay-requires/#more-47465">Detailed SolutionInterruption of large currents by relay requires

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