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MGVCL Exam Paper (30-07-2021 Shift 1)

MGVCL Exam Paper (30-07-2021 Shift 1)
Choose the word which expresses nearly the opposite meaning of the given word "QUANDARY "

Dilemma
Embarrassment
Certainty
Clutch

ANSWER DOWNLOAD EXAMIANS APP

MGVCL Exam Paper (30-07-2021 Shift 1)
The power factor angle of a purely inductive circuit is

45°
60°
30°
90°

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Power factor for purely inductive circuit is 0 and power factor angle is 90 degree.
Power factor for purely capacitive circuit is 0 and power factor angle is 90 degree
Power factor for purely resistive circuit is 1 and power factor angle is 0 degree

MGVCL Exam Paper (30-07-2021 Shift 1)
માણસ: ઘર :: પશુ :

પાતાળ
ગુફા
અંતરિક્ષ
આકાશ

ANSWER DOWNLOAD EXAMIANS APP

MGVCL Exam Paper (30-07-2021 Shift 1)
The operating time of an inverse definite minimum time (IDMT) overcurrent relay corresponding to plug-setting multiplier (PSM) = 1 and time-multiplier setting (TMS) = 1 will be

1 sec
3 sec
zero
infinite

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Equation of operating time for IDMT relay (t) = 0.14*TMS/[(PSM^0.02) - 1]
Here,
PSM = TMS = 1
So,
t = 0.14*1/(1 - 1)
t = infinite

MGVCL Exam Paper (30-07-2021 Shift 1)
Calculate the capacitance per meter of a 50 Ω load cable that has an inductance of 50 nH/m.

40 pF
30 pF
20 pF
10 pF

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Z = √(L/C)
C = L/Z²
C = 50*10⁻⁹/(50*50)
C = 0.02 nF
C = 20 pF

MGVCL Exam Paper (30-07-2021 Shift 1)
Two-wattmeter method is used to measure the power taken by a 3-phase induction motor on no load. The wattmeter readings are 375 W and –50 W. Calculate the reactive power taken by the load.

425/√3 VAR
425√3 VAR
325√3 VAR
325/√3 VAR

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Reactive power taken, Q = √3*(W1 - W2)
Q = √3*(375 + 50)
Q = √3*425 kVAR

MORE MCQ ON MGVCL Exam Paper (30-07-2021 Shift 1)

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