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Power Systems

Power Systems
If the load is short circuited, then reflection coefficient of voltage is

 1
 -1
 -2
 0

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Power Systems
Mho relay is used for protection of

  medium lines.
  short lines.
  none of these.
  long lines.

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Power Systems
For harnessing low variable water heads, the suitable hydraulic turbine with high percentage of reaction and runner adjust vanes is

  Kaplan.
  Impeller.
  Pelton.
  Francis.

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Power Systems
IF the time of operation of a relay for unity TMS is 10 sec then the time of operation for 0.5 TMS is

 10 sec.
  5 sec.
 20 sec.
 none of these.

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Power Systems
Stock bridge dampers are used in case hill areas to over come the which problem?

All of these
 unequal ice loading
 increase string efficiency
 increase power factor

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Power Systems
A cable has the following characteristics, L = 0.201 µH/m and C = 196.2 pF/m. The velocity of wave propagation through cable is

 32 m/s
 159.24 m/s
 159.24 m/µs
 0.0312 m/s

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