Electrical Machines When the rotor of a 3 phase induction motor is blocked then the slip is 1. 0.7. 0.54. 0.3. 1. 0.7. 0.54. 0.3. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Rotating part of DC motor is known as Carbone brush. Starter. Armature. Pole. Carbone brush. Starter. Armature. Pole. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The counter (or back) emf in a dc machine is 1. the same as generated emf in a dc motor 2. proportional to field flux and armature speed 3. not the same as generated emf in a dc motor 4.inversely proportional to field flux 5. proportional to number of armature conductors 6. constant from no load to full load From these, the correct answer is 1, 2, 5 3, 4, 5 2, 4, 5, 6 2, 3, 6 1, 2, 5 3, 4, 5 2, 4, 5, 6 2, 3, 6 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines As compared to an induction motor, the air gap in a DC motor is more. same. between 50% and 90%. less than 50%. more. same. between 50% and 90%. less than 50%. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Alternator operates on the principle of self induction. electromagnetic induction. self or mutual induction. mutual induction. self induction. electromagnetic induction. self or mutual induction. mutual induction. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Stray losses in transformer occurs in paper insulation in transformers. transformer insulating oil. winding conductors and steel structures of transformer. steel core. paper insulation in transformers. transformer insulating oil. winding conductors and steel structures of transformer. steel core. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS