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Power Systems

Power Systems
Most commonly used material for insulator is

 glass
All of these
 mica
 porcelain

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Power Systems
A network containing 50 buses in which 10 are the voltage control buses, 6 are the generator buses. Find the size of the Jacobian matrix?

 34*34
 83*83
 33*33
 84*84

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Power Systems
A Pelton wheel turbine having a rated speed of 300 rpm is connected to an alternator to produce power at 50 Hz. The number of poles required in the alternator is

 4
 10
 20
 8

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Power Systems
Specified quantities of slack bus are

 P and δ
 P and Q
 V and δ
 P and V

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

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

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Power Systems
Sum of the elements of row i equal to shunt admittances connected to bus i. If this summation is zero, indicates there is no

 mutual coupling
 both 1 and 2
 shunt admittance
None of these

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