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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?

 15 cm
 1 cm
 1.5 cm
 5 cm

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Power Systems
The radiation shield for a nuclear power reactor for biological safety is provided by having the reactor

 isolated from outside word with strong magnetic field.
 immersed in water pool.
  encased by thick concrete wall.
 encased thick metal wall.

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Power Systems
In a 3-phase, 5 kV, 5 MVA system, what is the base impedance?

 0.5 ohm
 50 ohms
 5 ohms
 500 ohms

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Power Systems
The rating of fuse wire is always expressed in

  amperes.
  ampere-hours.
  ampere-volts.
  kWh.

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Power Systems
A hydro electric generating station is supplied from a reservoir of capacity 5 × 10 − 6 cubic meters at a head of 200 meters. Find the total energy available in KWh if the overall efficiency is 75 %

 5 × 106 kWh.
 3 × 106 kWh.
  2.044 × 106 kWh.
 4.06 × 106 kWh.

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Power Systems
The steam power plant efficiency can be improved by

 using large quantity of water.
 decreasing the load on the plant.
  using high temperature and high pressure steam.
 burning large amount of coal.

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