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

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

4 %

5 %

6 %

0.4 %

4 %

5 %

6 %

0.4 %

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DGVCL Exam Paper (11-12-2011)
A Mho relay is a

Voltage controlled over current relay

Voltage restrained directional relay

Directional restrained over current relay

Directional restrained over voltage relay

Voltage controlled over current relay

Voltage restrained directional relay

Directional restrained over current relay

Directional restrained over voltage relay

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DGVCL Exam Paper (11-12-2011)
The insulation coordination for UHV lines (above 500 kV) is done based on

Lightning surges

Switching surges

Lightning and switching surges

Voltage level of the line

Lightning surges

Switching surges

Lightning and switching surges

Voltage level of the line

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DGVCL Exam Paper (11-12-2011)
Two parallel conductors are carrying the current in the same direction. Which of the following statements is correct?

The force increases when the distance between the conductors is increased

There is an attracting force between the conductors

The force increases when the distance between the conductors is decreased

There is a repelling force between the conductors

The force increases when the distance between the conductors is increased

There is an attracting force between the conductors

The force increases when the distance between the conductors is decreased

There is a repelling force between the conductors

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DGVCL Exam Paper (11-12-2011)
Due to skin effect

Uniform current flows through the conductor

Portion of the conductor near the surface carries less current and the core of the conductor carries more current

Current flows through the half cross section of the conductor

Portion of the conductor near the surface carries more current and the core of the conductor carries less current

Uniform current flows through the conductor

Portion of the conductor near the surface carries less current and the core of the conductor carries more current

Current flows through the half cross section of the conductor

Portion of the conductor near the surface carries more current and the core of the conductor carries less current

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DGVCL Exam Paper (11-12-2011)
DC series motors are best suited for traction work because

Torque and speed are inversely proportional to the square of the armature current

Torque and speed are proportional to the square of the armature current

Its torque is proportional to the square of the armature current and speed is inversely proportional to torque

Its torque is proportional to the square of the armature current and speed is directional proporational to torque

Torque and speed are inversely proportional to the square of the armature current

Torque and speed are proportional to the square of the armature current

Its torque is proportional to the square of the armature current and speed is inversely proportional to torque

Its torque is proportional to the square of the armature current and speed is directional proporational to torque

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DGVCL Exam Paper (11-12-2011)

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

DGVCL Exam Paper (11-12-2011) A Mho relay is a

DGVCL Exam Paper (11-12-2011) The insulation coordination for UHV lines (above 500 kV) is done based on

DGVCL Exam Paper (11-12-2011) Two parallel conductors are carrying the current in the same direction. Which of the following statements is correct?

DGVCL Exam Paper (11-12-2011) Due to skin effect

DGVCL Exam Paper (11-12-2011) DC series motors are best suited for traction work because

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

DGVCL Exam Paper (11-12-2011)
A Mho relay is a

DGVCL Exam Paper (11-12-2011)
The insulation coordination for UHV lines (above 500 kV) is done based on

DGVCL Exam Paper (11-12-2011)
Two parallel conductors are carrying the current in the same direction. Which of the following statements is correct?

DGVCL Exam Paper (11-12-2011)
Due to skin effect

DGVCL Exam Paper (11-12-2011)
DC series motors are best suited for traction work because