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DGVCL Exam Paper (11-12-2011)

DGVCL Exam Paper (11-12-2011)
What type of insulator is used if the direction of the transmission line is to be changed?

Strain type
Shakle type
Suspebsion type
Pin type

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DGVCL Exam Paper (11-12-2011)
The effect of electric shock on the human body depends on

Duration of contact
Voltage
Current
All of these

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DGVCL Exam Paper (11-12-2011)
Reactance relay is used to protect against

Both phase and earth faults
Earth faults only
Phase faults only
Over voltage faults

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DGVCL Exam Paper (11-12-2011)
In which of the following motors, the stator and rotor magnetic fields rotate at the same speed?

Universal motor
Reluctance motor
Induction motor
Synchronous motor

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

In all machine stator and rotor magnetic field rotates (stationary with respect to each other) at synchronous speed with respect to stationary observer.

DGVCL Exam Paper (11-12-2011)
The best location of the power factor correction equipment to be installed in the transmission line is at

The receiving end
Any place
The sending end
Middle of the line

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DGVCL Exam Paper (11-12-2011)
A 3 phase, 6 pole induction motor operates on 440 V, 50 Hz, supply. If the actual speed of the motor is 960 rpm the slip will be

6 %
5 %
4 %
0.4 %

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

Ns = 120f/P
Slip=(Ns-Nr)/Ns
Ns = 1000 and Nr = 960
from equation of slip, S = (1000-960)/1000
S = 0.04 or 4%

MORE MCQ ON DGVCL Exam Paper (11-12-2011)

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