DC Motors A three point starter is considered suitable for Shunt motors Shunt, compound and series motors All D.C. motors Shunt as well as compound motors Shunt motors Shunt, compound and series motors All D.C. motors Shunt as well as compound motors ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which one of the following is not necessarily the advantage of D.C. motors over A.C. motors? High starting torque Wide speed range Low cost Stability High starting torque Wide speed range Low cost Stability ANSWER DOWNLOAD EXAMIANS APP
DC Motors Carbon brushes are preferable to copper brushes because _____ They have lower resistance They have longer life They reduce sparking They reduce armature reaction They have lower resistance They have longer life They reduce sparking They reduce armature reaction ANSWER DOWNLOAD EXAMIANS APP
DC Motors The friction and windage losses in a dc motor depends upon Armature current Speed Field and armature resistance Flux Armature current Speed Field and armature resistance Flux ANSWER DOWNLOAD EXAMIANS APP
DC Motors Armature reaction in dc motor is increased When the field current increases By interpoles When the armature current decreases When the armature current increases When the field current increases By interpoles When the armature current decreases When the armature current increases 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 1 Around 90% Anywhere between 75% and 90% Less than 50% 1 Around 90% Anywhere between 75% and 90% Less than 50% ANSWER DOWNLOAD EXAMIANS APP
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