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Power Systems

Power Systems
Reflector nuclear reactor are made of

 cast iron.
 boron.
  beryllium.
 steel.

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Power Systems
Power transmission lines are transposed to reduce

 radio interference
 ferranti effect
 proximity effect
 skin effect

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Power Systems
Surge impedance loading can be increased by

 increasing of inductance value
 both 1 and 2
 increasing of voltage level
 increasing of capacitance value

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

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

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Power Systems
Frequencies must be same in which of the following line to exchange the power from one place to other place ?

 both 1 and 2
 Asynchronous line
 No need of same frequency for exchange of power
 Synchronous line

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Power Systems
Three generators rated 100 MVA, 11 kV have an impedance of 0.15 pu each. If in the same plant, these generators are being replaced by a single equivalent generator, the effective impedance of equivalent generator will be

 0.45 pu
 0.25 pu
 0.05 pu
 0.15 pu

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