DC Motors Which of the following tests will be suitable for testing two similar D.C. series motors of large capacity? Field test Swinburne's test Brake test Hopkinson's test Field test Swinburne's test Brake test Hopkinson's test ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following in a dc motor, can sustain the maximum temperature rise? Field winding Slip rings Commutator Armature winding Field winding Slip rings Commutator Armature winding ANSWER DOWNLOAD EXAMIANS APP
DC Motors Armature reaction in dc motor is increased When the field current increases When the armature current decreases By interpoles When the armature current increases When the field current increases When the armature current decreases By interpoles When the armature current increases ANSWER DOWNLOAD EXAMIANS APP
DC Motors The back emf in a dc motor ______ Opposes the applied voltage None of the listed here Aids the applied voltage Aids the armature current Opposes the applied voltage None of the listed here Aids the applied voltage Aids the armature current ANSWER DOWNLOAD EXAMIANS APP
DC Motors Dc series motors are used in those applications where _____ is required. Low no load speed High starting torque None of the listed here Constant speed Low no load speed High starting torque None of the listed here Constant speed ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a dc motor, the brushes are shifted from the mechanical neutral plane in a direction opposite to the rotation to _____ Increase speed Reduce sparking Decrease speed Produce flat characteristics Increase speed Reduce sparking Decrease speed Produce flat characteristics ANSWER DOWNLOAD EXAMIANS APP
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