MGVCL Exam Paper (30-07-2021 Shift 1)
1.મંગલ + આચરણ - મંગલાચરણ
2. હરિ+ઇન્દ્ર - હરીન્દ્ર
3.નર+ઈશ - નરેશ
4. પ્રતિ+અક્ષ - પ્રતિક્ષ
ઉપરોક્ત વર્ણવેલમાંથી કઈ સંધિ સાચી છે.

2,1
2,3,
1,3
1,4

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MGVCL Exam Paper (30-07-2021 Shift 1)
Which type of connection is employed for current transformers for the protection of delta- star connected 3-phase transformer?

delta-delta
delta-star
star-star
star-delta

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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)?

180V
160 V
240V
120V

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MGVCL Exam Paper (30-07-2021 Shift 1)
A THHN conductor will have 75°C termination on one end and a 60/75°C termination on the other, which ampacity column will be used?

60°C column
90°C column
None of these
75°C column

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MGVCL Exam Paper (30-07-2021 Shift 1)
The necessary equation to be solved during the load flow analysis using Fast-Decoupled methid is given below:
where B' and B'' are formed using the imaginary part of the bus admittance matrix Ybus, n is the total number of buses in the system, m is the number of voltage regulated buses. The size of matrix B' is
∆P/|Vi|= -B' ∆δ
∆Q/|Vi| = -B'' ∆|Vi|

(n-m-1) x (n-m-1)
(m-1) x (m-1)
(n-1) x (n-1)
(n-m) x (n-m)

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