MGVCL Exam Paper (30-07-2021 Shift 1)
Which among the following are included in the two part tariff?
i. Fixed charges
ii. Running charges
iii. Semi fixed charges

(ii) and (iii) only
(i), (ii) and (iii)
(i) and (iii) only
(i) and (ii) only

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

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

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MGVCL Exam Paper (30-07-2021 Shift 1)
The current flowing to a balanced delta connected load through line 'a' is 15 A when the conductor of line 'b' is open. With the current in line 'a' as reference, compute the symmetrical components of the line currents. Assume the phase sequence of 'abc'.

Ia₀ = 0 AIa₁ = (7.5 + j4.33) AIa₂ = (7.5 - j 4.33) A
Ia₀ = 0 AIa₁ = (-7.5 - j13) AIa₂ = (-7.5 - j4.33) A
Ia₀ = 0 AIa₁ = (7.5 + j4.33) AIa₂ = (-7.5 - j4.33) A
Ia₀ = 0 AIa₁ = (7.5 - j13) AIa₂ = (7.5 + j13) A

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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)?

160 V
120V
180V
240V

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MGVCL Exam Paper (30-07-2021 Shift 1)
An RC series circuit with R = 150 Ω and C = 2 μF is excited by a DC source of 15 V by closing the switch at t = 0 with an initially uncharged capacitor. The initial and final voltages across the capacitor respectively are

0 V, 15 V
15 V, 10 V
0 V, 10 V
10 V, 15 V

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