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

MGVCL Exam Paper (30-07-2021 Shift 3)
As per Stockholm International Peace Research Institute (SIPRI) report 2019 for the period 2014-2018, which country is the largest arms importer in the world?

India
Saudi Arabia
Myanmar
Germany

ANSWER DOWNLOAD EXAMIANS APP

MGVCL Exam Paper (30-07-2021 Shift 3)
A rectangular conductor is 1.6 inches wide and 0.25 inch thick. What is its area in square mils?

4000 square mils
40000 square mils
400 square mils
400000 square mils

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

1.6 inches = 1.6 inches x 1,000 mils per inch = 1,600 mils
0.25 inch = 0.25 inch x 1,000 mils per inch = 250 mils
Area = 1,600 x 250 = 400,000 square mils

MGVCL Exam Paper (30-07-2021 Shift 3)
A 3 pF capacitor is charged by a constant current of 2 pA for six seconds. The voltage across the capacitor at the end of charging will be

8 V
6 V
2 V
4 V

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Equation know that the charge stored in a capacitor is given as:
Q = C*V
Q = I*t
V = (I*t)/C
= (2μ*6)/(3μ)
= 4 V

MGVCL Exam Paper (30-07-2021 Shift 3)
The sending end and receiving end voltages of the short transmission line are 150 kV and 120 kV respectively. Calculate its percentage voltage regulation.

30%
20%
25%
40%

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Where,
Vs - sending end voltage in kV
Vr - Receiving end voltage in kV.

Voltage regulation = (Vs - Vr)/Vr
= (150 - 120)/120
= 0.25
% R = 25 %

MGVCL Exam Paper (30-07-2021 Shift 3)
A three phase four pole 50 Hz induction motor has a rotor resistance of 0.02 Ω/phase and stand-still reactance of 0.5 Ω/phase. Calculate the speed at which the maximum torque is developed.

1475 rpm
1440 rpm
1500 rpm
1525 rpm

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Condition for maximum torque,
Sm = R2/X2
= 0.04
Ns = (120*f)/P
= (120*50)/4
= 1500 rpm
S = (Ns - Nr)/Ns
Nr = Ns(1 - Sm)
= 1500*(1 - 0.04)
= 1440 rpm

MGVCL Exam Paper (30-07-2021 Shift 3)
Which of the following medium is used between CPU and RAM to speed up the processing power of a CPU?

Virtual memory
Cache memory
DRAM
Flash memory

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON MGVCL Exam Paper (30-07-2021 Shift 3)

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