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Power Systems

Power Systems
Reflector nuclear reactor are made of

 steel.
 boron.
  beryllium.
 cast iron.

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Power Systems
The value of diversity factor is

 greater than 1
 0
 less than 1
 1

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Power Systems
Aluminium is now most commonly employed conductor material in transmission lines than copper because

 it is cheaper and lighter
 it is more conductive
 its tensile strength is more
 costlier

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Power Systems
A 3-phase transmission line operating at Vs = 400 kV and has ABCD parameters A= D = 0.8∠0°, B = 100∠°90 Ω, C = 0.5*10^-6∠90° â„§. Find Charging current under no load?

 1.144∠90° A/phase
 0.512∠90° A/phase
 0.344∠90° A/phase
 0.144∠90° A/phase

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Power Systems
A sort line with R/X ratio 1, the zero regulation is obtained when the power factor of the load is

 unity
 0.707 leading
 0.5
 0 leading

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Power Systems
Characteristics of arc quenching medium is/are

All of these
 High dielectric strength
 Non flammable
 High thermal conductivity

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