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GETCO Exam Paper (22-07-2015)

GETCO Exam Paper (22-07-2015)
The surge impedance loading of the line will _____ if the length of the line is double

remains same
become half
double
four times

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Surge impedance is independent of length of the line

GETCO Exam Paper (22-07-2015)
Shunt compensation in EHV line is resorted to

Increase line impedance
Improve the stability
Improve voltage profile
Reduce the fault level

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GETCO Exam Paper (22-07-2015)
Shunt capacitors in a substation

delivers lagging VAR
consume active power
consumes lagging VAR
deliver active power

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GETCO Exam Paper (22-07-2015)
The line current in a three phase unbalanced load are Ir= 4+j6, Ib= 2-j2 and Ic= -3+j2, then zero sequence component of current will be

3 + j6
1 + j2
9 + j10
3 - j6

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GETCO Exam Paper (22-07-2015)
The national song of India was composed by

Iqbal
Rabindranath Tagore
Bankim Chandra Chatterji
Jai Shankar Prasad

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GETCO Exam Paper (22-07-2015)
Which of the following is not function of substation batteries?

operating automatic control circuits
provide supply to the excitation system
operating protective relay systems
emergency lighting circuits

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