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GETCO EXAM PAPER (22-07-2015)

GETCO Exam Paper (22-07-2015)
In a thermal power plant, heat from the flue gases is recovered in

chimney
condenser
Electric precipitator
Economizer

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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

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

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

become half
remains same
four times
double

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Surge impedance is independent of length of the line

GETCO Exam Paper (22-07-2015)
In case of a balanced three phase sinusoidal AC supply, because of the phase difference

neutral current is high if load is not balanced
all are correct
rotating magnetic field is produced
neutral wire is not required, if load is balanced

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GETCO Exam Paper (22-07-2015)
For formation of the Y bus matrix (using node voltage analysis) in power system network modelling _____ is used

KVL
Faraday's law
all are correct
KCL

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