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GETCO Exam Paper (11-06-2017)

GETCO Exam Paper (11-06-2017)
Current rating is not necessary in case of

load break switches
circuit breakers and load break switches
circuit breakers
isolators

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GETCO Exam Paper (11-06-2017)
Conductivity of aluminium is _____ time of that of copper

0.6
1.63
2.5
0.4

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GETCO Exam Paper (11-06-2017)
To improve the power factor in three phase circuits, the capacitor bank is connected in delta to make

capacitance very small
the power factor correction more effective
capacitance calculation elegant
the connection elegant

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GETCO Exam Paper (11-06-2017)
For an overhead line, the surge impedance is taken as

100-200 Ω
70-80 Ω
500-1000 Ω
20-40 Ω

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GETCO Exam Paper (11-06-2017)
The effect of corona is

increased energy loss
increased inductance
increased reactance
all

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GETCO Exam Paper (11-06-2017)
The capacitance of a capacitor is _____ relative permittivity

inversely proportional to
directly proportional to square of
independent of
directly proportional to

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C = ε A/d

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