Power Systems
Which of the following power plants needs highly skilled/qualified engineers for its operation

 Thermal.
 Hydro Power Plant
 Gas-turbine.
 Nuclear.

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Power Systems
Which of the following is/are the advantages of synchronous phase modifier over the shunt compensation?

 single unit can be used as both capacitance and inductor by adjusting the excitation
 both 1 and 2
 initial cost is low
 smooth voltage regulation is possible by controlling excitation

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Power Systems
Consider a three phase, 50 Hz, 11 kV distribution system. Each of the conductors is suspended by an insulator string having two identical porcelain insulators. The self capacitance of the insulators is 5 times the shunt capacitance between the link and ground. Find the voltage across the two insulators V1 and V2? (V1 = Voltage of disc nearest to the conductor)

 V1 = 6 kV and V2 = 5 kV
 V1 = 3.46 kV and V2 = 2.89 kV
 V1 = 2.89 kV and V2 = 3.46 kV
 V1 = 5 kV and V2 = 6 kV

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