MGVCL Exam Paper (30-07-2021 Shift 1)
A fully controlled natural commutated 3-phase bridge rectifier is operating with a firing angle α = 30°, The peak to peak voltage ripple expressed as a ratio of the peak output dc voltage at the output of the converter bridge is

0.5
1-(√3/2)
√3-1
√3 -1

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MGVCL Exam Paper (30-07-2021 Shift 1)
A given solar cell has the following specifications: Isc = 4 A and Voc = 0.7 V. Consider that 20 identical cells with the above specifications are to be interconnected to create a PV module. What is the open-circuit voltage of the PV module if all the solar cells are connected in a series configuration?

0.7 V
14 V
12.6 V
11.2 V

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MGVCL Exam Paper (30-07-2021 Shift 1)
Three equal star-connected inductors take 8 kW at 0.8 power factor when connected to a 460 V three - phase 3-wire supply. If one of the inductor in phase – Y is short circuited, then the line current in phase-Y is ___ Assume RYB sequence.

37.6 A
27.6 A
31.7 A
21.7 A

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

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

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

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

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