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?

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

-0.85 Hz

-0.76 Hz

0.76 Hz

0.85 Hz

-0.85 Hz

-0.76 Hz

0.76 Hz

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Power Systems
How much KWh energy is produced by fission of 1 gm of uranium U235

2400 kWh.

240 kWh.

24 kWh.

24000 kWh.

2400 kWh.

240 kWh.

24 kWh.

24000 kWh.

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Power Systems
Maximum efficiency of modern coal fired steam raising thermal power plants is restricted to about 035 (a low value), mainly because of

high energy loss from turbine exhaust to condenser.

low alternative efficiency.

low steam turbine mechanical efficiency.

high energy loss in boiler.

high energy loss from turbine exhaust to condenser.

low alternative efficiency.

low steam turbine mechanical efficiency.

high energy loss in boiler.

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Power Systems
A 3-phase, 110 kV coaxial XLPE insulated power cable delivering power at 50 Hz, has a capacitance of 125 nF/km. If the dielectric loss tangent of XLPE is 2*10^-4, then dielcetric power loss in this cable in W/km/phase is

31.7

35.45

38.6

23.9

31.7

35.45

38.6

23.9

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Power Systems
For complete protection of 3-phase system from the short circuit faults minimum number of relays required are

three

six

one

two

three

six

one

two

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Power Systems
Surge impedance loading can be increased by

increasing of voltage level

increasing of capacitance value

increasing of inductance value

both 1 and 2

increasing of voltage level

increasing of capacitance value

increasing of inductance value

both 1 and 2

ANSWER DOWNLOAD EXAMIANS APP

Power Systems

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?

Power Systems How much KWh energy is produced by fission of 1 gm of uranium U235

Power Systems Maximum efficiency of modern coal fired steam raising thermal power plants is restricted to about 035 (a low value), mainly because of

Power Systems A 3-phase, 110 kV coaxial XLPE insulated power cable delivering power at 50 Hz, has a capacitance of 125 nF/km. If the dielectric loss tangent of XLPE is 2*10^-4, then dielcetric power loss in this cable in W/km/phase is

Power Systems For complete protection of 3-phase system from the short circuit faults minimum number of relays required are

Power Systems Surge impedance loading can be increased by

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?

Power Systems
How much KWh energy is produced by fission of 1 gm of uranium U235

Power Systems
Maximum efficiency of modern coal fired steam raising thermal power plants is restricted to about 035 (a low value), mainly because of

Power Systems
A 3-phase, 110 kV coaxial XLPE insulated power cable delivering power at 50 Hz, has a capacitance of 125 nF/km. If the dielectric loss tangent of XLPE is 2*10^-4, then dielcetric power loss in this cable in W/km/phase is

Power Systems
For complete protection of 3-phase system from the short circuit faults minimum number of relays required are

Power Systems
Surge impedance loading can be increased by