Question: In a capacitor start single-phase motor, when capacitor is replaced by a resistance____________?

• 1. torque will increase
• 2. the motor will consume less power
• 3. motor will run in reverse direction
• 4. motor will continue to run in same direction

Question: Short-circuiter is used in_____________?

• 1. repulsion induction motor
• 2. repulsion motor
• 3. repulsion start induction run motor
• 4. none of the above

Question: The range of efficiency for shaded pole motors is______________?

• 1. 95% to 99%
• 2. 80% to 90%
• 3. 50% to 75%
• 4. 5% to 35%

Question: Burning out of winding is due to___________?

• 1. short circuited capacitor
• 2. capacitor value hiving changed
• 3. open circuiting of capacitor
• 4. none of the above

Question: Direction of rotation of a split phase motor can be reversed by reversing the connection of__________?

• 1. running winding only
• 2. starting winding only
• 3. either A or B
• 4. both A and B

Question: Which of the following motors is inherently self starting ?

• 1. Split motor
• 2. Shaded-pole motor
• 3. Reluctance motor
• 4. None of these

Question: The direction of rotation of an hysteresis motor is determined by____________?

• 1. interchanging the supply leads
• 2. position of shaded pole with respect to main pole
• 3. retentivity of the rotor material
• 4. none of these

Question: A capacitor-start single phase induction motor is switched on to supply with its capacitor replaced by an inductor of equivalent reactance value. It will______________?

• 1. start and then stop
• 2. start and run slowly
• 3. start and run at rated speed
• 4. not start at all

Question: Which of the following motors is used in mixies ?

• 1. Repulsion motor
• 2. Reluctance motor
• 3. Hysteresis motor
• 4. Universal motor

Question: In a single phase motor the centrifugal switch____________?

• 1. disconnects auxiliary winding of the motor
• 2. disconnects main winding of the motor
• 3. reconnects the main winding the motor
• 4. reconnects the auxiliary winding of the motor