Is it possible to include/ Exclude external resistance in the rotor of a Squirrel cage induction motor?. Justify Last Answer : No it is not possible to include/ Exclude external resistance in the rotor of a Squirrel cage induction motor because, the rotors bars are permanently short circuited by means of circuiting rings (end rings) at both the ends. i.e. no slip rings to do so....
Find the rotor current frequency of 4-pole, 3-phase, 60Hz, induction motor operating at a speed of 1500 rpm. a. 5 b. 4 c. 7 d. 10
What are the methods to reduce the magnitude of rotor current (rotor induced current) at starting? Last Answer : By increasing the resistance in the rotor circuit by reducing the magnitude of rotating magnetic field i.e. by reducing the applied voltage to the stator windings ...
What are the protective devices in a DC/AC motor Starter? Last Answer : Over load Release (O.L.R) or No volt coil Hold on Coil Thermal Relays Fuses (Starting /Running) Over load relay...
What is the objective of rotor resistance starter (stator rotor starter)? Last Answer : To include resistance in the rotor circuit there by reducing the induced rotor current at starting. This can be implemented only on a slip ring induction motor. ...
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