MGVCL Exam Paper (30-07-2021 Shift 3)
In the following question, one part of the sentence may have an error. Find out which part of the sentence has an error and select the option corresponding to it. If the sentence contains no error, Select "No error" option. (Avoid punctuation errors).
(A) The boys campaigned / (B) not only in / (C) Mumbai also in Chennai / (D) NO ERROR

A
C
D
B

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MGVCL Exam Paper (30-07-2021 Shift 3)
The current flowing in to a balanced delta connected load through line 'a' is 10 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 = 10 A.Ia₁ = (-1.66 + j2.88) A.Ia₂ = (1.66 + j2.88) A.
Ia₀ = 0 A.Ia₁ = (-1.66 + j2.88) A.Ia₂ = (1.66 + j2.88) A.
Ia₀ = 10 A.Ia₁ = (-5 + j2.44) A.Ia₂ = (5 - j2.44) A.
Ia₀ = 0 A.Ia₁ = (-5 + j2.88) A.Ia₂ = (5 - j2.88) A.

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MGVCL Exam Paper (30-07-2021 Shift 3)
A 10 A, Type C Miniature Circuit Breaker (MCB) will trip at fault currents

greater than 100 A
less than 10 A
between 10 A and 50 A
between 50 A and 100 A

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MGVCL Exam Paper (30-07-2021 Shift 3)
In which of the following situations, there is no need to provide directional overcurrent protection.

single end fed, parallel feeder
ring main
double end fed, single feeder
single end fed, single feeder

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