MGVCL Exam Paper (30-07-2021 Shift 1)
___ is the rms value of the total current comprising the AC and DC components of the current in the circuit breaker pole at the instant of contact separation.

Symmetrical short circuit current
Making current
Asymmetrical breaking current
Symmetrical breaking current

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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
0.805 Ω
0.605 Ω
0.305 Ω

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MGVCL Exam Paper (30-07-2021 Shift 1)
For sea water with σ = 5 mho/m and ε_r = 80, what is the distance for which ratio signal can be transmitted with 90% attenuation at 25 kHz?

32.7 m
0.327 m
3.27 m
327 m

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MGVCL Exam Paper (30-07-2021 Shift 1)
A thermistor is inherently suitable for temperature measurement involving

low span and low sensitivity
high span and high sensitivity
high span and low sensitivity
low span and high sensitivity

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