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?

0.76 Hz

-0.76 Hz

-0.85 Hz

0.85 Hz

0.76 Hz

-0.76 Hz

-0.85 Hz

0.85 Hz

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Power Systems
Telecommunication lines are transposed to reduce the

All of these

voltage level

radio interference in communication lines

efficiency

All of these

voltage level

radio interference in communication lines

efficiency

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Power Systems
A thermal power station needs space

less than that required by atomic power station of the same output.

less than that required by hydro-power station of same capacity.

less than that required by a gas turbine power plant of same output.

less than that required by the diesel power station of same output.

less than that required by atomic power station of the same output.

less than that required by hydro-power station of same capacity.

less than that required by a gas turbine power plant of same output.

less than that required by the diesel power station of same output.

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Power Systems
Isolator in sub station is open under ------------- condition?

any of the above

no load

full load

short circuit

any of the above

no load

full load

short circuit

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Power Systems
What is the approximate efficiency of a normal thermal power station?

20-25%

45-55%

30-40%

60-70%

20-25%

45-55%

30-40%

60-70%

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Power Systems
Normally Z bus matrix is a

full matrix

null matrix

unit matrix

sparse matrix

full matrix

null matrix

unit matrix

sparse matrix

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 Telecommunication lines are transposed to reduce the

Power Systems A thermal power station needs space

Power Systems Isolator in sub station is open under ------------- condition?

Power Systems What is the approximate efficiency of a normal thermal power station?

Power Systems Normally Z bus matrix is a

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
Telecommunication lines are transposed to reduce the

Power Systems
A thermal power station needs space

Power Systems
Isolator in sub station is open under ------------- condition?

Power Systems
What is the approximate efficiency of a normal thermal power station?

Power Systems
Normally Z bus matrix is a