DC Motors The rheostatic speed control method is very Unsuitable for rapidly changing loads Efficient Suitable for getting speeds above the normal Economical Unsuitable for rapidly changing loads Efficient Suitable for getting speeds above the normal Economical ANSWER DOWNLOAD EXAMIANS APP
DC Motors In which of the following tests only one motor is required? Field's test Hopkinson's test Brake test Swinburne's test Field's test Hopkinson's test Brake test Swinburne's test ANSWER DOWNLOAD EXAMIANS APP
DC Motors In variable speed motor None of these 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 A stronger commutating field is needed at low speed than at high speed None of these 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 A stronger commutating field is needed at low speed than at high speed ANSWER DOWNLOAD EXAMIANS APP
DC Motors When the speed of dc motor increases, its armature current Decreases None of the listed here Increases Remains same Decreases None of the listed here Increases Remains same ANSWER DOWNLOAD EXAMIANS APP
DC Motors In the dc motor the iron losses occur in Commutator Brushes Field Armature Commutator Brushes Field Armature ANSWER DOWNLOAD EXAMIANS APP
DC Motors The maximum end play of a motor is about 0.4 mm 2 mm 6 mm 10 mm 0.4 mm 2 mm 6 mm 10 mm ANSWER DOWNLOAD EXAMIANS APP
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