GETCO Exam Paper (30-11-2008)

GETCO Exam Paper (30-11-2008)
Which loss in a transformer varies significantly with load?

Core loss

Copper loss

Eddy current loss

Hysteresis loss

Core loss

Copper loss

Eddy current loss

Hysteresis loss

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GETCO Exam Paper (30-11-2008)
Which of the following inernational body is associated / collaborating in the National 'Population Education Programme' in the country?

WHO

UNESCO

UNFPA

IMF

WHO

UNESCO

UNFPA

IMF

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GETCO Exam Paper (30-11-2008)
Transfer of power between two power systems takes place with power flowing from the system with the

Lagging power angle

Higher input current

Higher voltage level

Greater leading power angle

Lagging power angle

Higher input current

Higher voltage level

Greater leading power angle

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GETCO Exam Paper (30-11-2008)
Power system A is operating in parallel with other systems and has a frequency bias of 50 MW/0.1 Hz. For a loss of generation in one of the interconnected systems resulting in a frequency drop of 0.02 Hz, system A should

provide 10 MW of support

not be affected

provide 20 MW of support

provide 30 MW support

provide 10 MW of support

not be affected

provide 20 MW of support

provide 30 MW support

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GETCO Exam Paper (30-11-2008)
A buchholz will operate in a transformer whenever there is

saturation of magnetic circuit

over load

large internal fault

any of the above

saturation of magnetic circuit

over load

large internal fault

any of the above

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GETCO Exam Paper (30-11-2008)
A material best suited for manufacturing of fuse wire is

silver

aluminium

zinc

copper

silver

aluminium

zinc

copper

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