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Power Systems

Power Systems
Phase shift occurs due to which of the following components?

 capacitance
 inductance
 both 1 and 2
 conductance

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Power Systems
How to find the total number of strands (N) when number of layers (x) are given

 Total number of strands N = 3x² - 3x + 1
 Total number of strands N = 3x² + 3x + 1
 Total number of strands N = 3x² - 3x - 1
 Total number of strands N = 3x² + 3x - 1

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Power Systems
At slack bus, which one of the following combinations of variables is not specified?

 V and δ
 P and V
 Q and V
 P and Q

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Power Systems
For harnessing low variable water heads, the suitable hydraulic turbine with reaction and adjustable vanes runners is

 Francis
 Kaplan
 Pelton
 Impeller

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Power Systems
A transmission line has surge impedance of 400 Ω, operating at Vs = Vr = 400 kV line is compensated with a shunt capacitance of 30%. Find the surge impedance loading with compensation?

 386 MW
 456 MW
 400 MW
 478 MW

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Power Systems
The essential requirement(s) for power plants to be operated as peak load plants are

All of these
 Low capital cost.
 Quick response to load variation.
 Capability of quick starts.

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