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GETCO Exam Paper (30-11-2008)

GETCO Exam Paper (30-11-2008)
In an over current protection, the setting of earth fault relay is _____ the phase fault relay.

not related in
less than
more than
equal to

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GETCO Exam Paper (30-11-2008)
The disadvantage of transmission lines as compared to cables is

inductive interference between power communication circuits
All of these
exposure to lightening
exposure to atmosphere hazards like smoke, ice, etc.

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GETCO Exam Paper (30-11-2008)
Bulk-oil CBs can be used for voltage upto

33 kV
11 kV
1.1 kV
66 kV

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GETCO Exam Paper (30-11-2008)
In distance protection, the relay measures _____ impedance of the line from relay up to the fault point.

self
negative sequence
positive sequence
zero sequence

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GETCO Exam Paper (30-11-2008)
If the fault occurs near the relay, the V/I ratio will be _____ that of if the fault occurs away from the relay.

equal to
none of these
lower than
higher than

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GETCO Exam Paper (30-11-2008)
Two transformers are connected in parallel and share loads in the ratio of their kVA ratings when their ohmic impedances are

equal
in direct ratio of their ratings
purely reactive
in inverse ratio of their ratings

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