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MGVCL Exam Paper (30-07-2021 Shift 3)

MGVCL Exam Paper (30-07-2021 Shift 3)
Name the application under MS Office software bundle, that we use to create audio- visual presentation.

MS Power point
MS Access
MS Word
MS Excel

ANSWER DOWNLOAD EXAMIANS APP

MGVCL Exam Paper (30-07-2021 Shift 3)
Thermopile is used for the measurement of

temperature
current
flow rate
emf

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

The function of a thermopile is to transfer the heat radiation emitted from the object to a voltage output.
The output is in the range of tens or hundreds of millivolts.
Thermopiles are used to provide an output in response to temperature as part of a temperature measuring device

MGVCL Exam Paper (30-07-2021 Shift 3)
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%
76.66%
28.33%
50.55%

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Rectification efficiency = DC output power/AC input power

MGVCL Exam Paper (30-07-2021 Shift 3)
The maximum value of power factor is ____ and it exists in a pure____ circuit.

1, inductive
0.866, resistive
1, resistive
0.866, inductive

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Value of power factor is varies from 0 to 1.
R→PF = 1
L→PF = 0 lag
C→PF = 0 lead
R-L→0 lag < PF < 1
R-C→0 lead < PF < 1
R-C-L→depends on value of R, L and C. PF = R/Z

MGVCL Exam Paper (30-07-2021 Shift 3)
In public sector, what is the full form of "LIC"?

Life Insurance Company
Lively Insurance Corporation
Life Insurers
Life Insurance Corporation

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MGVCL Exam Paper (30-07-2021 Shift 3)
A DC shunt generator has an induced voltage of 220 V on open circuit. When the machine is on load the terminal voltage is 200 V. Find the load current if the field resistance is 100 Ω and armature resistance is 0.2 Ω.

98 A
96 A
104 A
102 A

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Voltage equation for Dc shunt generator,
Eb = V + Ia*Ra
V = Ish*Rsh
Ish = 200/100
= 2 A
Eb = V + Ia*Ra
20 = Ia*Ra
Ia = 20/0.2
= 100 A
I = 100 - 2
= 98 A

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