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Power Systems

Power Systems
Length of short transmission line is up to

 80 km
 any of the above
 150 km
 40 km

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Power Systems
Direct conversion of heat energy into electrical energy is possible through

 MHD generator.
 Thermal converters.
 Both A and C.
 Fuel or solar cell.

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Power Systems
In triangular configuration, inductance and capacitance values are ------ and ------ respectively

 less, higher
 higher, less
 less, less
 higher, higher

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Power Systems
Transmission line has a length of 300 km, operating at sending end voltage Vs = 1 pu, find the receiving end voltage(Vr) at no load?

 0.098 pu
 0.98 pu
 1.098 pu
 1 pu

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Power Systems
A 200 MVA alternator operated at no load at frequency of 50 Hz, it has inertia constant of 5 MWsec/MVA and governing system has a time delay of 0.6 sec. If the load of 50 MW is suddenly applied then find the frequency deviation during this time?

 -0.85 Hz
 0.76 Hz
 -0.76 Hz
 0.85 Hz

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Power Systems
If a generator of 250 MVA rating has an inertia constant of 6 MJ/MVA, its inertia constant on 100 MVA base is

 10.5 MJ/MVA
 6 MJ/MVA
 15 MJ/MVA
 2.5 MJ/MVA

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