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GETCO Exam Paper (30-11-2008)

GETCO Exam Paper (30-11-2008)
Choose the word which is most nearly the OPPOSITE in meaning
SECURE

discover
endanger
defend
offend

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GETCO Exam Paper (30-11-2008)
The symmetrical components are used in fault analysis because

the number of equations become lesser
the sequence networks do not have mutual couplings
the result are in terms of symmetrical components
none of these

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GETCO Exam Paper (30-11-2008)
The arc voltage in a C.B. is _____ with the arc current

leading by 90˚
in phase
none of these
lagging by 90˚

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GETCO Exam Paper (30-11-2008)
Arcing voltage will be the least in case of

copper
silver
carbon
tungsten

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GETCO Exam Paper (30-11-2008)
When a star delta transformer bank of three single phase transformers is to be used for step down transformation with line voltages of 23000 V and 2300 V, the ratio of transformation will be

5.8:1
10.0:1
17.2:1
12.1:1

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GETCO Exam Paper (30-11-2008)
The effect of wind pressure is more predominant on

transmission lines
insulator
supporting towers
neutral wires

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