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Power Systems

Power Systems
A 3 layer, total diameter of an ACSR conductor is 5 cm. Find the diameter of each strand?

 1.5 cm
 5 cm
 1 cm
 15 cm

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Power Systems
The load current in short circuit calculations are neglected because

 nether 1 nor 2
 short circuit currents are much larger than load currents
 both 1 and 2
 short circuit currents are greatly out of phase with load currents

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Power Systems
A 200 MVA alternator operated at no load at frequency of 50 Hz, it has inertia constant of 5 MWsec/MVA and governing system has a time delay of 0.6 sec. If the load of 50 MW is suddenly applied then find the frequency deviation during this time?

 0.85 Hz
 0.76 Hz
 -0.76 Hz
 -0.85 Hz

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Power Systems
Nuclear power plant are used as

  base load plants.
 none of above.
 peak load plants.
 intermediate load plants.

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Power Systems
Maximum power transfer capability of transmission line can be increased by

 Parallel transmission lines
 Using bundled conductors
All of these
 Using series capacitance

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Power Systems
In a long transmission line, if we increase the length of the line, the parameters A and B respectively

 increases and decreases
 decreases and increases
 decreases and decreases
 increases and increases

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