Power Systems
For 800 MJ stored energy in the rotor at synchronous speed, what is the inertia constant H for a 50 Hz, four pole turbo generator rated 100 MVA, 11 kV?

 4 MJ/MVA
 6 MJ/MVA
 2 MJ/MVA
 8 MJ/MVA

ANSWER DOWNLOAD EXAMIANS APP

Power Systems
Half life is defined as

 none of above.
  the time required for one half of isotope to decay.
 the time required to spiliting of a heavy nucleus.
 the time required for full of atoms in a specimen disintegrate.

ANSWER DOWNLOAD EXAMIANS APP