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Power Systems

Power Systems
India’s largest thermal power station is located at

 Neyveli.
 Sarni.
 Kota.
 Chandrapur.

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Power Systems
To prevent maloperation of deferentially connected relay while energizing a transformer, the relay restraining coil is biased with

 2nd harmonic current.
  5th harmonic current.
 7th harmonic current.
 3rd harmonic current.

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Power Systems
The commercial sources of energy are

  fossile fuels and radioactive substances.
 wood, animal wastes and agricultural wastes.
 solar, wind, biomass.
 none of above.

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Power Systems
The internal flux linkage due to internal flux of a conductor is

 I/2*10-7 wb-T/m
All of these
 I/4*10-7 wb-T/m
 I/6*10-7 wb-T/m

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Power Systems
The insulation resistance of the 20 km long underground cable is 8 MΩ. Other things being same, the insulation resistance of 10 km long cable will be

 4 MΩ
 16 MΩ
 8 MΩ
 32 MΩ

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Power Systems
Inductance of transmission line will decrease when

 both GMD and GMR decrease
 both GMD and GMR increase
 GMD decrease and GMR increase
 GMD increase and GMR decrease

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