Slip characteristics of IM

What is slip in an induction motor?

• a) The difference between synchronous speed and rotor speed

• b) The difference between stator frequency and rotor frequency

• c) The difference between motor power and actual power output

• d) The difference between rated speed and actual speed

What is the maximum slip in an induction motor?

• a) 1

• b) 0.5

• c) 0

• d) It depends on the motor design

What happens to the rotor frequency as slip increases?

• a) It decreases

• b) It increases

• c) It remains constant

• d) It fluctuates

Slip is defined as the difference between synchronous speed and __________.

• a) Rotor speed

• b) Stator speed

• c) Magnetizing speed

• d) None of the above

Slip in an induction motor is always _________.

• a) Positive

• b) Negative

• c) Zero

• d) None of the above

The slip speed is directly proportional to the __________.

• a) Frequency

• b) Voltage

• c) Power factor

• d) All of the above

The starting torque of an induction motor is directly proportional to the __________.

• a) Square of the voltage

• b) Square of the frequency

• c) Both a and b

• d) None of the above

The power factor of an induction motor is low at __________.

• a) Full load

• b) Half load

• c) No load

• d) None of the above

The efficiency of an induction motor is maximum at __________.

• a) Full load

• b) Half load

• c) No load

• d) None of the above

The slip of an induction motor is a __________ quantity.

• a) Scalar

• b) Vector

• c) Matrix

• d) None of the above