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GETCO Exam Paper (11-06-2017)

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

20-40 Ω
500-1000 Ω
70-80 Ω
100-200 Ω

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GETCO Exam Paper (11-06-2017)
A synchronous condenser is virtually a/an

induction motor
commutatr motor
over-excited synchronous motor
under-excited synchronous motor

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Synchronous motor operate at no load with over excitation it behave as synchronous capacitor
supply reactive power at leading power factor

GETCO Exam Paper (11-06-2017)
The inductance of a power transmission line increases with

increase in load current carried by the conductors
decrease in line length
increase in spacing between the phase conductors
increase in diameter of conductor

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GETCO Exam Paper (11-06-2017)
The voltage across the various discs of a string of suspension insulators having identical discs is different due to

surface leakage currents
shunt capacitance to ground
series capacitance
series and shunt capacitance

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GETCO Exam Paper (11-06-2017)
For which one of the following materials, is the Hall Coefficient zero?

Intrinsic semiconductor
Insulator
Alloy
Metal

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GETCO Exam Paper (11-06-2017)
The power factor of an open ended cable can be improved by

decreasing the capacitance
increasing the insulation resistance
increasing the capacitance
increasing the conductor resistance

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MORE MCQ ON GETCO Exam Paper (11-06-2017)

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