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

MGVCL Exam Paper (30-07-2021 Shift 1)
Choose the word which best expresses the similar meaning of the given word " CALLOW"

Mature
Sophisticated
Calm
Immature

ANSWER DOWNLOAD EXAMIANS APP

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

30°
60°
45°
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)
નીચે પૈકી 'અચરજ'નો પર્યાયી શબ્દ ક્યો છે?

જગત
રજ
શાશ્વત
વિસ્મય

ANSWER DOWNLOAD EXAMIANS APP

MGVCL Exam Paper (30-07-2021 Shift 1)
જ્વાળા: ધુમાડો:: બરફ : ___

ગરમી
બાષ્પ
તાપમાન
શીતળતા

ANSWER DOWNLOAD EXAMIANS APP

MGVCL Exam Paper (30-07-2021 Shift 1)
The frequency of the emf in the stator of a 4-pole induction motor is 50 Hz, and that in the rotor is 2 Hz. What is the slip and at what speed is the motor running?

4%, 1440 rpm
3%, 1455 rpm
4%, 1455 rpm
3%, 1440 rpm

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Rotor frequency, f_r = s*f_s
s = 2/50
s = 0.04

Ns = 120f/P
Ns = 1500 rpm
s = (Ns - Nr)/Ns
Nr = Ns(1 - s)
Nr = 1500*(1 - 0.04)
Nr = 1440 rpm

MGVCL Exam Paper (30-07-2021 Shift 1)
An eight-pole wave-connected armature has 600 conductors and is driven at 625 rev/min. If the flux per pole is 20 mWb, determine the generated emf.

325 V
125 V
500 V
250 V

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Let,
E→EMF in volt
φ→Flux in weber
A→Parallel path (for wave winding = 2)
Z→No. of armature conductors
N→speed in rpm
P = Number of poles
E = PφNZ/(60A)
E = 8*0.020*625/(60*2)
E = 500 V

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

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