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

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

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GETCO Exam Paper (11-06-2017)
In a 3-phase, 4-wire cable the cross sectional area of neutral conductor is

half of the area of phase conductor
equal to the area of phase conductor
1.5 times the area of phase conductor
double the area of phase conductor

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