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Power Systems

Power Systems
A CT is connected in ___________________ with the line.

  across.
  not connected.
  series.
  both A and B.

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Power Systems
Which of the following contributes to the Rankine cycle efficiency improvement in a thermal power plant

All of these
 Use of high pressure.
 Use of steam for heating of boiler feed water.
 Reheat of steam an intermediate stages.

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Power Systems
A moderator material should have

  small atomic mass.
 large atomic mass.
None of these
 may be any of the above.

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Power Systems
A hydro power plant of run off river type should be provided with pondage so that the

  firm capacity of plant is increased.
 kinetic energy of the running water is fully utilized.
 pressure inside the turbine casing remains.
 operating head is controlled.

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Power Systems
A power station supplies the peak load of 50 MW, 40 MW and 70 MW to three localities. The annual load factor is 0.50 p.u. and the diversity factor of the load at the station is 1.55 the maximum demand on the station and average load respectively will be

 53 MW.
 57.5 MW.
  51.61 MW.
 52 MW.

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Power Systems
A power system network has n nodes, Z33 of its bus impedance matrix is j0.5 pu. The voltage at node 3 is 1.3∠ -10°. If capacitor is having reactance of -j3.5 pu is now added to the network between node 3 and reference node, the current drawn by the capacitor in pu is

 0.371∠ -100°
 0.325∠ -100°
 0.433∠ 80°
 0.725∠ 80°

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