MGVCL Exam Paper (30-07-2021 Shift 1)
By inserting a plate of dielectric material between the plates of a parallel plate capacitor at constant potential, the energy stored in the capacitor is increased five times. The dielectric constant of the material is

1/25
1/5
25
5

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MGVCL Exam Paper (30-07-2021 Shift 1)
Simultaneous tripping of the circuit breaker at both ends of a transmission line is achieved by

none of these
overcurrent protection
distance protection
pilot protection

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MGVCL Exam Paper (30-07-2021 Shift 1)
A thermistor is inherently suitable for temperature measurement involving

low span and low sensitivity
low span and high sensitivity
high span and low sensitivity
high span and high sensitivity

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

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