Electrical Machines The air gap between stator and the rotor of the 3 - φ induction motor is kept as wide as possible. depends on the material of stator and the rotor. air gap does not matter. as small as possible. as wide as possible. depends on the material of stator and the rotor. air gap does not matter. as small as possible. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC series motor must started on no load because it would Draw more current without producing sufficient torque. Fail to start without load. Not develop starting torque. Run at dangerously high speed. Draw more current without producing sufficient torque. Fail to start without load. Not develop starting torque. Run at dangerously high speed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Current in a coil undergoing commutation is not able to get reversed completely by the end of commutation period. It is due to coil resistance. armature emf. None of these reactance voltage induced in the coil. coil resistance. armature emf. None of these reactance voltage induced in the coil. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In which transformer, the tertiary winding is used? Star - delta Star - star Delta - star Delta - delta Star - delta Star - star Delta - star Delta - delta ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If starting current of a 3 - Φ induction motor is 5 times the rated current, while rated slip is 4 %, then ratio of starting torque to full load torque is 1. 0.4. 0.6. 0.8. 1. 0.4. 0.6. 0.8. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer both Oc and SC tests are conducted on HV side OC test is conducted on LV side and SC test is conducted on HV side both OC and SC tests are conducted on LV side OC test is conducted on HV side and SC test is conducted on LV side both Oc and SC tests are conducted on HV side OC test is conducted on LV side and SC test is conducted on HV side both OC and SC tests are conducted on LV side OC test is conducted on HV side and SC test is conducted on LV side ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS