EE MCQ

MGVCL Exam Paper (30-07-2021 Shift 1)
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___ is the rms value of the total current comprising the AC and DC components of the current in the circuit breaker pole at the instant of contact separation.

Symmetrical breaking current:

It is the rms value of a a.c component of the current in the pole at the instant of contact separation.

Asymmetrical breaking current:

It is the rms value of the total current comprising the a.c and d.c components of the current in the pole at the instant of contact separation.

Related Question

MGVCL Exam Paper (30-07-2021 Shift 1)
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Which among the following are included in the two part tariff?

i. Fixed charges

ii. Running charges

iii. Semi fixed charges

i. Fixed charges

ii. Running charges

iii. Semi fixed charges

Two-part tariff:

In this type of tariff, the total bill is divided into two parts.

The first one is the fixed charge and the second is the running charge.

The fixed charge is because of the maximum demand and the second charge depends on the energy consumption by the load.

MGVCL Exam Paper (30-07-2021 Shift 1)
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Match the following

Bus Type - Known Parameter - Unknown Parameter

Load Bus -P, Q - V, phase angle

Generator Bus - P, V (magnitude) - Q, Voltage phase angle

Slack Bus Voltage - magnitude and phase angle - P, Q

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

A form of AC testing that applies voltage and measures the leakage/loss current of electrical insulation.

It is a type of insulation testing used to evaluate the integrity of electrical insulation.

MGVCL Exam Paper (30-07-2021 Shift 1)
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The single line diagram of the simple system is shown in figure the corresponding reactance diagram is

Simple logic of reactance diagram is that simplified equivalent circuit of power system in which the various components of power system are represented by their reactance.

The reactance diagram can be obtained from impedance diagram if all the resistive components are neglected.

So, from figure each of the component is represented by its reactance.