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A 50 Hz, four-pole turboalternator rated at 20 MVA, 13·2 kV has an inertia constant H = 4 kW sec/kVA. The kinetic energy stored in the rotor at __________ MJ
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- 0.80
- 8.0
- 80
- 0.08
Correct Option: C
Kinetic energy stored = GH,
where G = rating in MVA and
H = inertia constant
∴ Kinetic energy stored = 20 × 4 = 80 MJ
