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Power Systems

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

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

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Power Systems
The SWR on a lossless transmission line of the characteristic impedance 100 ohm is 3. The line is the terminated by

 A resistance of 100 ohm.
 A resistance of 100/3 ohm.
 A resistance of j100/3 ohm.
 A resistance of j300 ohm.

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Power Systems
What type of back up protection is used for alternators?

  Mho relay.
  Impedance relay.
  Buchholz relay.
  IDMT relay.

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Power Systems
The Y bus matrix of 100 bus interconnected system is 90% sparse. Hence the number of transmission lines in the system must be

 900
 500
 450
 250

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Power Systems
For harnessing low variable water heads, the suitable hydraulic turbine with reaction and adjustable vanes runners is

 Pelton
 Kaplan
 Francis
 Impeller

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Power Systems
The inductance of single phase two wire line is given by

 4×10-7× ln(r'/d) H/m
 4×10-7× ln(d/r') H/m
 0.4×10-7× ln(r'/d) H/m
 0.4×10-7× ln(d/r') H/m

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