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

√3 -1
√3-1
0.5
1-(√3/2)

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MGVCL Exam Paper (30-07-2021 Shift 1)
A balanced delta connected load of 8+j6 Ω per phase is connected to a 415 V, 50 Hz, 3-phase supply lines. If the input power factor is improved to 0.9 by connecting a star connected capacitor bank, then the required kVAR of the bank is

8.98 kVAR
14.98 kVAR
16.98 kVAR
10.98 kVAR

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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
12.6 V
14 V
11.2 V

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MGVCL Exam Paper (30-07-2021 Shift 1)
Insulation Power Factor testing on an oil-filled transformer is not helpful in determining ___

Movement of the windings (change in capacitance)
Condition of paper insulation (change in watts losses)
Whether the oil test indicates moisture
Turns ratio values

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MGVCL Exam Paper (30-07-2021 Shift 1)
આપેલ વિકલ્પો પૈકી દ્રવ્યવાચક સંજ્ઞાનું વાકય કયું છે?

ગુરુ એવો હોવો જોઈએ જેની વાણીમાં મીઠાસ હોય.
રણવીરને બોલીવુડનો બાહુબલી કહી શકાય.
આજકાલ ઠંડી હવા પ્રસરવા લાગી છે.
મહારાષ્ટ્રમાં અનેક શહેરો છે.

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