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

5 %

0.4 %

4 %

6 %

5 %

0.4 %

4 %

6 %

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

DGVCL Exam Paper (11-12-2011)
At time t= 0+ , with zero initial condition, which of the following acts as a short circuit?

Conductor

Capacitor

Voltage source

Resistor

Conductor

Capacitor

Voltage source

Resistor

ANSWER DOWNLOAD EXAMIANS APP

DGVCL Exam Paper (11-12-2011)
The motor used in celling fans is

Capacitor start motor

Capacitor start capacitor run motor

Universal motor

Split phase motor

Capacitor start motor

Capacitor start capacitor run motor

Universal motor

Split phase motor

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

DGVCL Exam Paper (11-12-2011)
It is difficult interrupt a capacitive current because

Current magnitude is very small

The restriking voltage can be high

Stored energy in the capacitor is very high

It has a leading power factor

Current magnitude is very small

The restriking voltage can be high

Stored energy in the capacitor is very high

It has a leading power factor

ANSWER DOWNLOAD EXAMIANS APP

DGVCL Exam Paper (11-12-2011)
Which motor is used to start heavy loads?

Cumulatively compounded motor

Series motor

Differentially compounded motor

Shunt motor

Cumulatively compounded motor

Series motor

Differentially compounded motor

Shunt motor

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

DGVCL Exam Paper (11-12-2011)
The purpose of embedding the damper winding in the pole face of a synchronous motor is to

Eliminate losses on account of fair friction

Reduce winding losses

Eliminate hunting and provide adequate starting torque

Reduce bearing friction

Eliminate losses on account of fair friction

Reduce winding losses

Eliminate hunting and provide adequate starting torque

Reduce bearing friction

ANSWER EXPLANATION DOWNLOAD EXAMIANS APP

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) At time t= 0+ , with zero initial condition, which of the following acts as a short circuit?

DGVCL Exam Paper (11-12-2011) The motor used in celling fans is

DGVCL Exam Paper (11-12-2011) It is difficult interrupt a capacitive current because

DGVCL Exam Paper (11-12-2011) Which motor is used to start heavy loads?

DGVCL Exam Paper (11-12-2011) The purpose of embedding the damper winding in the pole face of a synchronous motor is to

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)
At time t= 0+ , with zero initial condition, which of the following acts as a short circuit?

DGVCL Exam Paper (11-12-2011)
The motor used in celling fans is

DGVCL Exam Paper (11-12-2011)
It is difficult interrupt a capacitive current because

DGVCL Exam Paper (11-12-2011)
Which motor is used to start heavy loads?

DGVCL Exam Paper (11-12-2011)
The purpose of embedding the damper winding in the pole face of a synchronous motor is to