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Power Systems

Power Systems
Which of the following materials is/are used as moderators?

 beryllium
 heavy water
All of these
 graphite

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Power Systems
Find the characteristic impedance of a transmission line, if impedance is 16 Ω and admittance is 0.1 mâ„§?

 200 Ω
 320 Ω
 400 Ω
 160 Ω

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Power Systems
If we increase the spacing between the phase conductors, the line capacitance

None of these
 increases
 remains unaffected
 decreases

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Power Systems
NTPC (National Thermal Power Cooperation) has its only thermal power generating unit in West Bengal at

 Bakreshwar.
 Durgapur.
 Farakka.
 Katwa.

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Power Systems
In a 400 kV power network, 360 kV is recorded at 400 kV bus. The reactive power absorbed by a shunt reactor for 50 MVAr, 400 kV connected at the bus is

 55.56 MVAr.
 61.73 MVAr.
 45.0 MVAr.
  40.5 MVAr.

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Power Systems
A 100 Km long transmission line is loaded at 110 kV. If the loss of line is 5 MW and the load is 150 VA the resistance of the line is

 4.65 Ω / phase.
  8.06 Ω / phase.
 6.06 Ω / phase.
 2.26 Ω / phase.

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