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?

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%, 1455 rpm

4%, 1440 rpm

3%, 1455 rpm

3%, 1440 rpm

4%, 1455 rpm

4%, 1440 rpm

3%, 1455 rpm

3%, 1440 rpm

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MGVCL Exam Paper (30-07-2021 Shift 1)
If a 415 V, 50 Hz, star-connected, three-phase squirrel-cage induction motor is operated from a 415 V, 70 Hz supply, the torque that the motor can now provide while drawing rated current from the supply

reduces

increases

remains the same

increases or reduces depending upon the rotor resistance

reduces

increases

remains the same

increases or reduces depending upon the rotor resistance

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MGVCL Exam Paper (30-07-2021 Shift 1)
A 16 A, Type B Miniature Circuit Breaker (MCB) will disconnect a fault in 0.1s when the fault current is

less than 16 A

between 48 A and 80 A

greater than 32 A

less than 16 A

between 48 A and 80 A

greater than 32 A

less than 16 A

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MGVCL Exam Paper (30-07-2021 Shift 1)
An electric potential field is produced in air by point 1 μC and 4 μC located at (-2, 1, 5) and (1, 3, -1) respectively. The energy stored in the field is

5.14 mJ

12.50 mJ

2.57 mJ

10.28 mJ

5.14 mJ

12.50 mJ

2.57 mJ

10.28 mJ

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MGVCL Exam Paper (30-07-2021 Shift 1)
In a single phase energy meter, the series electromagnet is energized by a _ of _

current coil, thick wire of few turns

current coil, thin wire of more turns

voltage coil, thin wire of more turns

voltage coil, thick wire of few turns

current coil, thick wire of few turns

current coil, thin wire of more turns

voltage coil, thin wire of more turns

voltage coil, thick wire of few turns

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MGVCL Exam Paper (30-07-2021 Shift 1)
Which generation of computers used vacuum tubes?

Third Generation

First Generation

Fourth Generation

Second Generation

Third Generation

First Generation

Fourth Generation

Second Generation

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

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?

MGVCL Exam Paper (30-07-2021 Shift 1) If a 415 V, 50 Hz, star-connected, three-phase squirrel-cage induction motor is operated from a 415 V, 70 Hz supply, the torque that the motor can now provide while drawing rated current from the supply

MGVCL Exam Paper (30-07-2021 Shift 1) A 16 A, Type B Miniature Circuit Breaker (MCB) will disconnect a fault in 0.1s when the fault current is

MGVCL Exam Paper (30-07-2021 Shift 1) An electric potential field is produced in air by point 1 μC and 4 μC located at (-2, 1, 5) and (1, 3, -1) respectively. The energy stored in the field is

MGVCL Exam Paper (30-07-2021 Shift 1) In a single phase energy meter, the series electromagnet is energized by a ___ of ___

MGVCL Exam Paper (30-07-2021 Shift 1) Which generation of computers used vacuum tubes?

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?

MGVCL Exam Paper (30-07-2021 Shift 1)
If a 415 V, 50 Hz, star-connected, three-phase squirrel-cage induction motor is operated from a 415 V, 70 Hz supply, the torque that the motor can now provide while drawing rated current from the supply

MGVCL Exam Paper (30-07-2021 Shift 1)
A 16 A, Type B Miniature Circuit Breaker (MCB) will disconnect a fault in 0.1s when the fault current is

MGVCL Exam Paper (30-07-2021 Shift 1)
An electric potential field is produced in air by point 1 μC and 4 μC located at (-2, 1, 5) and (1, 3, -1) respectively. The energy stored in the field is

MGVCL Exam Paper (30-07-2021 Shift 1)
In a single phase energy meter, the series electromagnet is energized by a _ of _

MGVCL Exam Paper (30-07-2021 Shift 1)
Which generation of computers used vacuum tubes?