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Power Systems

Power Systems
The insulator thickness on the conductor, in cables depends upon

 current
 voltage
 power factor
 reactive power

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Power Systems
A diesel power plant is generally used as a/an

 Base load.
 Peak loads.
 Standby/emergency plant.
 Any of above.

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Power Systems
Phase shift occurs due to which of the following components?

 capacitance
 both 1 and 2
 conductance
 inductance

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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
 both 1 and 2
 nether 1 nor 2
 Transmission system must be more efficient with minimum line losses

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Power Systems
Two generating stations delivering a powers of P1 = 150 MW, P2 =100 MW and the B coefficients are B11 = 0.005, B22 = 0.002, B12=B21= -0.001. Find the transmission line losses?

 105.2
 95.5
 102.5
 85.5

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Power Systems
The characteristic impedance of a transmission line is

 Inversely proportional to square root of its length.
 Independent of its length.
 Directly proportional to its length.
 Directly proportional to square root of its length.

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