5. The term 'Locked rotor torque' applies When the induction motor speed is zero When the induction motor is at nominal speed When the induction motor synchronous speed When the induction motor speed is at breakdown torque

6- Which of the following supply is given to the rotor winding of 3-Phase Induction Motor: a) DC Supply b) AC Supply c) No Supply d) Pulsating Supply 7- 3-Phase Induction Motor will have Starting Torque and Starting Current a) High, High b) Low, Low. c) High, Low d) Low, High 8- Which of the following method is used for controlling the speed of an induction motor: a) Changing number of stator poles b) Supply voltage control c) Frequency control d) All the options are correct 9- Which of the following method cannot be used for starting of 3-Phase Squirrel Induction Motor: a) Star-Delta Starting b) Line resistor startling c) transformer Starter d) Rotor Resistance Starting 10- The rotor of a stepper motor has no: a) windings b) commutator c) brushes d) all of the above

hotors a) What power is developed by a motor that turns at 1200 rpm and has a torque of 3.0 N-m?

What is a single - phase induction motor? How does a single- phase induction motor work? How do you test a single phase motor? Which capacitor is used in single phase motor? What are the advantages of single phase induction motor? What are the applications of single phase induction motor? How does an induction motor start? What are the differences between single and three phase I.M ? What are the types of induction motor? What is the difference between induction motor and normal motor? Why three-phase induction motor self start while single phase motor does not self start?

A squirrel-cage induction motor is operating at 1175 RPM and producing a torque of 22 Ib-ft. What is the horsepower output of the motor?

Which of the following statements related to wind turbine types are true? Select one or more: a. The Savonius rotor will not start without an auxiliary motor b. In modern industrial-sized wind turbines, the most common type of turbine is a 3-bladed wind turbine. c. In a downwind turbine, the blades are on the (upper) side of the wind when viewed from the nacell

8. What happens to the magnitude of the magnetic field on the Rotor when an induction machine speed increases closer to synchronous speed? the rotor speeding up has on effect on the magnetic field on the rotor the rotor speeding up increases the magnetic field on the rotor the rotor speeding up decreases the magnetic field on the rotor