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GETCO Exam Paper (22-07-2015)

GETCO Exam Paper (22-07-2015)
Critical clearing time of a fault in a power system is related to

Reactive power limit
Steady state limit
Transient stability limit
Short circuit limit

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GETCO Exam Paper (22-07-2015)
The value of holding ratio of relay is always

greater than 1
less than 1
Infinite
zero

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GETCO Exam Paper (22-07-2015)
Penalty factor in power system economical operation is measure of

fuel cost
generation cost
all are correct
Line loss

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GETCO Exam Paper (22-07-2015)
An over-current relay of current rating 5 A and setting 150% is connected to a 200/5 A CT. Then the relay to pickup, the line current required is

150
300
200
100

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GETCO Exam Paper (22-07-2015)
Two watt meter method for 3 phase circuit is preferred over other methods because

all are correct
PF of the load can also be estimated
it can be used for balanced or unbalanced load
it can be used for star or delta connected load

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GETCO Exam Paper (22-07-2015)
HVDC transmission is preferred to EHV AC because

System stability can be improved
Its terminal equipment are inexpensive
Harmonic problem is avoided
VAR compensation is not required in it

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MORE MCQ ON GETCO Exam Paper (22-07-2015)

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