DC Motors A series motor will over speed when The load is increase The field is opened Load is removed The armature circuit is opened. The load is increase The field is opened Load is removed The armature circuit is opened. ANSWER DOWNLOAD EXAMIANS APP
DC Motors In case the conditions for maximum power for a D.C. motor are established, the efficiency of the motor will be Anywhere between 75% and 90% Around 90% Less than 50% 1 Anywhere between 75% and 90% Around 90% Less than 50% 1 ANSWER DOWNLOAD EXAMIANS APP
DC Motors In variable speed motor 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 A stronger commutating field is needed at low speed than at high speed ANSWER DOWNLOAD EXAMIANS APP
DC Motors If the terminals of armature of D.C. motor are interchanged, this action will offer following kind of braking None of these Regenerative Plugging Dynamic braking None of these Regenerative Plugging Dynamic braking 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 Less than full-load current Rated full-load current Almost negligible More than full-load current Less than full-load current Rated full-load current Almost negligible More than full-load current ANSWER DOWNLOAD EXAMIANS APP
DC Motors The commutating pole winding is connected in None of the listed here Series-parallel with the armature Parallel with the armature Series with the armature None of the listed here Series-parallel with the armature Parallel with the armature Series with the armature ANSWER DOWNLOAD EXAMIANS APP
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