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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?

 5 cm
 1.5 cm
 1 cm
 15 cm

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Power Systems
Operating time of pumped storage plant is

 high
 low
 can't say
 very high

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Power Systems
The line currents of 3-phase supply are: IR = 3 + j 5 A IY =2 + j 2 A IB = -2 - j 1 A The zero sequence current will be

 1 + j 4 A
 -2 - j 1 A
 5 + j 7 A
 1 + j 2 A

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Power Systems
Which of the following is an impulse turbine

  Pelton turbine.
  Francis turbine.
  Kaplan turbine.
  None of above.

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Power Systems
In a transmission line the insulators to be used at the dead end or sharp curves are

 any of the above
 strain type
 pin type insulator
 suspension type

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Power Systems
Find the characteristic impedance of a transmission line, if impedance is 16 Ω and admittance is 0.1 mâ„§?

 160 Ω
 200 Ω
 400 Ω
 320 Ω

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