MGVCL Exam Paper (30-07-2021 Shift 1)
In a 3-phase, 4-wire, 400/230 V system, a lamp (L1) of 100 W is connected to one phase and neutral and a lamp (L2) of 150 W is connected to the second pahse and neutral. If the neutral wire is disconnected accidently, what will be the voltage across a 100 W lamp (L1)?

240V
160 V
180V
120V

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MGVCL Exam Paper (30-07-2021 Shift 1)
Match the following

A = (ii), B = (i), C = (iii)
A = (iii), B = (i), C = (ii)
A = (ii), B = (iii), C = (i)
A = (iii), B = (ii), C = (i)

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MGVCL Exam Paper (30-07-2021 Shift 1)
Determine the ohmic value of the current limiting reactor per phase external to a 30 MVA, 11 kV, 50 Hz, three phase synchronous generator which can limit the current on short circuit of 5 times the full load current. The reactance of the synchronous generator is 0.05 pu.

0.405 Ω
0.605 Ω
0.305 Ω
0.805 Ω

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