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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 cm
 1.5 cm
 15 cm

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

 strain type
 any of the above
 suspension type
 pin type insulator

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Power Systems
Fault calculations using computer are usually done by

 either 1 or 2
 Z bus method
None of these
 Y bus method

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Power Systems
Mercury is choice with steam in binary vapor cycle because

 relative low vaporization pressure.
  all of above.
 higher saturation temperature than other fluids.
 higher critical temperature and pressure.

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Power Systems
When reactance grounding is used in network, the voltage between neutral and ground is

 both 1 and 3
 IR0 × Xn
 IN × Xn
 3×IR0 × Xn

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Power Systems
The function of draft tube is reaction turbine is to

  convert kinetic energy of water.
 reduce water hammer.
 increase flow rate of water.
 all of above.

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