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Power Systems

Power Systems
Find the value of a729, where "a" is the operator

 α²
 1
 0
 α

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Power Systems
The function of moderator in a nuclear reactor is

 to absorb the excess.
  to slow down the neutrons.
All of these
 to increase the energy of the neutrons.

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Power Systems
Which of the following method is used for changing power factor from leading to lagging

 any of the above
 shunt capacitor
 series capacitor
 shunt reactor

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Power Systems
For a lossy transmission line, the characteristic impedance does not depend on

 The conductivity of conductors.
 The operating frequency of the line.
 The load terminating the line.
 The permittivity of the dielectric separating the conductor.

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Power Systems
Which of the following statements is/are true? Due to corona,

 power loss increases
 charging current increases
 interference increases
All of these

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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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