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Power Systems

Power Systems
At slack bus, which one of the following combinations of variables is not specified?

 Q and V
 P and V
 P and Q
 V and δ

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Power Systems
The main advantage of the Decoupled Load Flow (DLF) as compared to the NR method is

All of these
 reduced memory requirements in storing the Jacobian elements
 accuracy is more
 number of iterations are less

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Power Systems
If we increase the spacing between the phase conductors, the line capacitance

None of these
 decreases
 remains unaffected
 increases

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Power Systems
In thermal plant most of the energy is wasted in

 ESP
 condenser
 turbines
 boiler

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Power Systems
Three generators rated 100 MVA, 11 kV have an impedance of 0.15 pu each. If in the same plant, these generators are being replaced by a single equivalent generator, the effective impedance of equivalent generator will be

 0.15 pu
 0.45 pu
 0.25 pu
 0.05 pu

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Power Systems
A network containing 100 buses in which 10 are the voltage control buses, 5 are fixed shunt capacitor buses, 20 are the reactive power support buses, 6 are the generator buses. Find the size of the Jacobian matrix?

 163 × 163
 165 × 165
 162 × 162
 164 × 164

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