MGVCL EXAM PAPER (30-07-2021 SHIFT 3) QUIZ

A single phase full converter bridge, connected to 230 V, 50 Hz source is feeding a load R =10 Ω in series with a large inductance that makes the load current ripple free. For a firing angle of 450, calculate the rectification efficiency.

63.66%

28.33%

50.55%

76.66%

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Transistors were used in

Second Generation Computers

Third Generation Computers

Fourth Generation Computers

First Generation Computers

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If a cable of homogeneous insulation has maximum stress of 6 kV/mm, then the dielectric strength of insulation should be ____

12 kV/mm

3 kV/mm

6 kv/mm

1.5 kV/mm

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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 = 0 A.Ia₁ = (-5 + j2.88) A.Ia₂ = (5 - 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 = 10 A.Ia₁ = (-1.66 + j2.88) A.Ia₂ = (1.66 + j2.88) A.

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Nairobi negotiations are related to which of the following Organisation?

World Trade Organisation

The United Nations Children's Fund

World Economic Forum

UNESCO

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What items should be considered when looking at a site for a new transformer installation?

All of these

Soils Report

Environmental impact

Site Survey

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In which of the following situations, there is no need to provide directional overcurrent protection.

single end fed, single feeder

ring main

single end fed, parallel feeder

double end fed, single feeder

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Replace the braketed phrase grammatically and conceptually with the help of the given opation. If the given sentence is correct then select the option ’The given sentence is correct’.<br/>The corono virus continued to spread, with the development of infections advancing quickly

The given sentence is correct

continue to spread, with the development of infections

continued to spreading, with the development of infections

continued for spread, with the development of infections

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What is the value of capacitance of a capacitor which has a voltage of 4 V and has 16 C of charge?

8 F

4 F

16 F

2 F

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સાબરમતી: અમદાવાદ:: મૂસી:

લંડન

વેનિસ

હૈદરાબાદ

ગોવા

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