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Power Systems

Power Systems
Uses of diesel power stations

All of these
  peak load plant.
 standby plants.
  emergency plants.

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Power Systems
The fact that current density is higher at the surface when compared to centre is known as

All of these
 proximity effect
 skin effect
 carona

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Power Systems
Lightning arresters are made up of which material?

 any of the above
 silver
 silicon oxide
 copper

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Power Systems
The rate of rise of re-striking voltage is dependent upon

 inductance of the system only
 capacitance of the system only
 both 1 and 2
 resistance of the system only

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Power Systems
If the diameter of the conductor is increased

 the inductance is increased
 no change in inductance and resistance
 the resistance is increased
 the inductance is decreased

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Power Systems
In a 4*4 Y bus matrix the number of non zero elements are 12. Find the sparsity of the system?

 0.75
 0.5
 1
 0.25

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