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Power Systems

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

 450
 250
 500
 900

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Power Systems
A generated station has a maximum demand of 30 MW, a load factor of 60% and a plant capacity factor of 50%. The reserve capacity of the plant is

 12 MW
 5 MW
 10 MW
 6 MW

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Power Systems
Which of the following relationships are not valid for short transmission lines

All of these
 A = D = 1
 B = C = Z
 Is = Ir

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Power Systems
In thermal power stations, economiser will

 reduce the thermal efficiency
 both 2 and 3
 increase the thermal efficiency
 reduce the heat

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Power Systems
A diesel power plant is generally used as a/an

 Peak loads.
 Standby/emergency plant.
 Base load.
 Any of above.

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Power Systems
Specified quantities of load bus are

 P and Q
 P and δ
 Q and V
 V and δ

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