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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

Economizer
Electric precipitator
condenser
chimney

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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

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

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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

double
remains same
become half
four times

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

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

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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

Faraday's law
all are correct
KCL
KVL

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