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Power Systems

Power Systems
Normally Z bus matrix is a

 sparse matrix
 unit matrix
 null matrix
 full matrix

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Power Systems
Mechanical energy is supplied to a DC generator at the rate of 4200 J / S. The generator delivers 32.2 Amp at 120 V. How much energy is cost per minute of operation

 25060 J.
  20160 J.
  20060 J.
 23060 J.

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Power Systems
The power generated by two plants are; P1 = 50 MW, P2 = 40 MW. If the loss coefficients are B11 = 0.001, B22 = 0.0025 and B12 = -0.0005, then power loss will be

 5.5 MW
 6.5 MW
 8.5 MW
 4.5 MW

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Power Systems
Which of the following is not base load power plant

  Pump storage.
  Nuclear.
  Run water.
  Diesel.

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Power Systems
Buchholz relay is used for protection of

  transformer.
  bus bar.
  alternator.
  none of these.

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Power Systems
In triangular configuration, inductance and capacitance values are ------ and ------ respectively

 higher, less
 less, less
 higher, higher
 less, higher

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