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Power Systems

Power Systems
Attenuation occurs due to

 resistance
 both 1 and 3
 conductance
 inductance

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Power Systems
A Pelton wheel turbine having a rated speed of 300 rpm is connected to an alternator to produce power at 50 Hz. The number of poles required in the alternator is

 10
 4
 20
 8

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Power Systems
If a generator of 250 MVA rating has an inertia constant of 6 MJ/MVA, its inertia constant on 100 MVA base is

 15 MJ/MVA
 6 MJ/MVA
 10.5 MJ/MVA
 2.5 MJ/MVA

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Power Systems
For variable heads of near about but less than 30 m, which type of turbines is used hydro power plant

 Francis.
 None of above.
 Pelton.
  Kaplan.

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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

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

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

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

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