A 500 M W, 21 k V, 50 H z, 3-phase, 2-pole synchronous generator having a rated p.f.= 0.9 has a moment of inertia of 27.5 10 kg-m . The inertia constant (H) will be

A 500 M W, 21 k V, 50 H z, 3-phase, 2-pole synchronous generator havin

1.	A 500 M W, 21 k V, 50 H z, 3-phase, 2-pole synchronous generator having a rated p.f.= 0.9 has a moment of inertia of 27.5 10 kg-m . The inertia constant (H) will be
A.	2.44 s
B.	2.71 s
C.	4.88 s
D.	5.42 s
Answer» B. 2.71 s

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A 500 M W, 21 k V, 50 H z, 3-phase, 2-pole synchronous generator having a rated p.f.= 0.9 has a moment of inertia of 27.5 10 kg-m . The inertia constant (H) will be

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