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Power Systems

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

 50 ohms
 500 ohms
 0.5 ohm
 5 ohms

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Power Systems
In nuclear chain fission reaction each neutron causing fission produces

  at least one new neutron.
 no new neutron.
 less than one new neutron.
 one new neutron.

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Power Systems
In load flow studies PV bus is treated as PQ bus when

 reactive power goes beyond limit
 phase angle become high
 voltage at the bus become high
 any of the above

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Power Systems
The total number of strands in a ACSR conductor are 7, then find the layer number?

 5
 2
 7
 3

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Power Systems
A steam power generation has an overall efficiency of 20 %. 0.6 Kg of coal is burnt per kWh of electrical energy generated. Calculated the calorific value of fuel

 7562 KCal / Kg.
 7000 KCal / Kg.
  7166.67 KCal / Kg.
 7268.45 KCal / Kg.

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Power Systems
The conductor carries more current on surface as compared to core. This is called as

 unsymmetrical fault
 skin effect
 corona effect
All of these

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