MGVCL Exam Paper (30-07-2021 Shift 1)
___ is the short time reduction in the rms voltage between 0.1 to 0.9 p.u for a duration of ___

Voltage sag, greater than 1 minute
Voltage swell, 0.5 cycle to 1 minute.
Voltage sag, 0.5 cycle to 1 minute.
Voltage swell, greater than 1 minute

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MGVCL Exam Paper (30-07-2021 Shift 1)
A grid interactive solar system:

always supplies power to the grid
works only when the grid fails
supplies power to as well as receives power from the grid as required
always receives power from the grid

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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)?

120V
180V
160 V
240V

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MGVCL Exam Paper (30-07-2021 Shift 1)
Voltage dips cannot be caused by which of the following:

Switching on of Large Loads
Local and Remote faults
Inductive Loading
Capacitive Switching

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