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Power Systems

Power Systems
Plant capacity factor value is

 1
 greater than 1
 less than 1
 0

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Power Systems
Advantages of higher transmission voltage is/are

 Transmission line losses are reduced
All of these
 Area of cross section and volume of the conductor is reduced
 Power transfer capability of the transmission line is increased

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Power Systems
The main objectives of electrical power transmission is/are

 Voltage regulation of the transmission line must be zero or minimum
 Transmission system must be more efficient with minimum line losses
 nether 1 nor 2
 both 1 and 2

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Power Systems
Maximum power transfer capability of transmission line can be increased by

 Parallel transmission lines
 Using series capacitance
All of these
 Using bundled conductors

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Power Systems
The most suitable circuit breaker for short line fault without switching resistor is

 oil circuit breaker.
 none of these.
 air blast circuit breaker.
  SF6 breaker.

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Power Systems
A 1- phase transmission line operating at 30 kV has radius of 1 cm and distance between conductors is 0.5 m. Assume m = δ =1, g = 21 kV/cm and frequency f = 50 Hz. Find the critical disruptive voltage?

 82.15 kV/phase
 34.64 kV/phase
 41.075 kV/phase
 17.32 kV/phase

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