DC Motors In variable speed motor A stronger commutating field is needed at low speed than at high speed Same commutating field is needed at low speed than at high speed A weaker commutating field is needed at low speed than at high speed None of these A stronger commutating field is needed at low speed than at high speed Same commutating field is needed at low speed than at high speed A weaker commutating field is needed at low speed than at high speed None of these ANSWER DOWNLOAD EXAMIANS APP
DC Motors The friction and windage losses in a dc motor depends upon Field and armature resistance Speed Flux Armature current Field and armature resistance Speed Flux Armature current ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a D.C. shunt motor, under the conditions of maximum power, the current in the armature will be Rated full-load current Less than full-load current More than full-load current Almost negligible Rated full-load current Less than full-load current More than full-load current Almost negligible ANSWER DOWNLOAD EXAMIANS APP
DC Motors A direct on line starter is used for starting motors Upto 5 HP Upto 15 HP Upto 10 HP Upto 20 HP Upto 5 HP Upto 15 HP Upto 10 HP Upto 20 HP ANSWER DOWNLOAD EXAMIANS APP
DC Motors During rheostat braking of dc series motor None of the listed here Motor is reversed in direction Motor is run as a generator Motor is run at reduced speed None of the listed here Motor is reversed in direction Motor is run as a generator Motor is run at reduced speed ANSWER DOWNLOAD EXAMIANS APP
DC Motors ______ motor has the best speed regulation. Shunt Cummulative compounded Series Differentially compounded Shunt Cummulative compounded Series Differentially compounded ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS