In a squirrel cage induction motor, the number of rotor bars is generally ________ Prime number Equal to stator poles Even number None of the listed here TRUE ANSWER : ? YOUR ANSWER : ?
When a 3-phase induction motor is at no load, the slip is ______ 1 Practically zero 0.2 0.5 TRUE ANSWER : ? YOUR ANSWER : ?
5 H.P., 50Hz, 3-phase, 440 V, induction motors are available for the following r.p.m. Which motor will be the costliest? 1440 rpm 2880 rpm 1000 rpm 730 rpm TRUE ANSWER : ? YOUR ANSWER : ?
3-phase wound rotor morors are also called _____ motors. Synchronous Slip ring Commutator Series TRUE ANSWER : ? YOUR ANSWER : ?
The full load slip of a 3-phase induction motor ranges from None of the listed here 2 to 5 % 20 to 30 % 10 to 20 % TRUE ANSWER : ? YOUR ANSWER : ?
In the circle diagram for induction motor, the diameter of the circle represents Line voltage Rotor current Slip Running torque TRUE ANSWER : ? YOUR ANSWER : ?
The frequency of rotor current in a 6-pole , 50 Hz, 3-phase induction motor running at 950 rpm is 1.5 Hz 2.5 Hz 5 Hz 0.05 Hz TRUE ANSWER : ? YOUR ANSWER : ?
The complete circle diagram of induction motor can be drawn with the help of data found from Stator resistance test All of these Blocked rotor test No-load test TRUE ANSWER : ? YOUR ANSWER : ?
The shaft of induction motor is made of Flexible Stiff Hollow Any of the listed here TRUE ANSWER : ? YOUR ANSWER : ?
Less maintenance troubles are experienced in terms of Both squirrel cage and slip ring Squirrel cage induction motor Slip ring induction motor None of the listed here TRUE ANSWER : ? YOUR ANSWER : ?