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Power Systems

Power Systems
Which of the following quantities are to be calculated for generator bus?

 δ and V
 P and Q
 Q and δ
 P and V

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Power Systems
The receiving end voltage for a long line under no load condition is

 equal to the sending end voltage
 any of the above
 less than the sending end voltage
 more than the sending end voltage

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Power Systems
Which of the following material is not used as fuse element?

  Copper.
  Silver.
  Carbon.
  Aluminium.

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Power Systems
The positive, negative and zero sequence impedances of a transmission line are 0.5,0.5 and 1.1 pu respectively. The self (Zs) and mutual (Zm) impedances of the line will be given by

 Zs = 0.2 pu, Zm =0.7 pu
 Zs = 0.6 pu, Zm =0.5 pu
 Zs = 0.7 pu, Zm =0.2 pu
 Zs = 0.5 pu, Zm =0.6 pu

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Power Systems
If we increase the spacing between the phase conductors, the value of line inductance

 decrease
 remains unaffected
None of these
 increase

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Power Systems
If the breakdown voltage of the insulator is high, the thickness of the insulator is

 less
 it does not related to breakdown voltage
None of these
 high

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