Electrical Machines An induction motor when started on no load does not accelerate up to full speed but runs at 1/7th of the rated speed. The motor is said to be cogging. crawling. plugging. locking. cogging. crawling. plugging. locking. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Eg (generated emf) and Eb (back emf) both are different. changes. none of above. same. different. changes. none of above. same. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Under operating conditions the rotor conductor should be _________________ in induction motor. none. semi closed or semi opened. always opened. always closed. none. semi closed or semi opened. always opened. always closed. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Variation in speed by ward-Leonard control of DC motors occurs due to variation in Armature current. Supply voltage. Field excitaion. Armature voltage. Armature current. Supply voltage. Field excitaion. Armature voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A delta/star transformer is connected in parallel to a star/delta transformer. The turn ratio former is x times latter, the x is 3 1/3 1/√3 √3 3 1/3 1/√3 √3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Value of specific electric loading of Induction motor is in the range of 30000 - 100000 ampere conductor / metre. 400 - 4000 ampere conductor / metre. 5000 - 45000 ampere conductor / metre. 40 - 400 ampere conductor / metre. 30000 - 100000 ampere conductor / metre. 400 - 4000 ampere conductor / metre. 5000 - 45000 ampere conductor / metre. 40 - 400 ampere conductor / metre. ANSWER DOWNLOAD EXAMIANS APP
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