DC Motors The armature torque of the D.C. shunt motor is proportional to armature current only field flux only None of these both (A) and (B) armature current only field flux only None of these both (A) and (B) ANSWER DOWNLOAD EXAMIANS APP
DC Motors A dc series motor is that which Has its field winding consisting of thick wire and less turns Can be started easily without load Has almost constant speed Has a poor torque Has its field winding consisting of thick wire and less turns Can be started easily without load Has almost constant speed Has a poor torque ANSWER DOWNLOAD EXAMIANS APP
DC Motors D.C. series motors are used Where constant operating speed is needed Where load changes frequently Where load is constant None of these Where constant operating speed is needed Where load changes frequently Where load is constant None of these ANSWER DOWNLOAD EXAMIANS APP
DC Motors In D.C. machines the residual magnetism is of the order of 10 to 15 percent 2 to 3 percent 50 to 75 percent 20 to 25 percent 10 to 15 percent 2 to 3 percent 50 to 75 percent 20 to 25 percent ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a dc motor constant torque is produced due to Commutator End plates Pole shoes Rotor laminations Commutator End plates Pole shoes Rotor laminations ANSWER DOWNLOAD EXAMIANS APP
DC Motors Where D.C. motor of H.P. 12 or more requires frequent starting, stopping, reversing and speed control Four point starter is used All above can be used Drum type controller is used Three point starter is used Four point starter is used All above can be used Drum type controller is used Three point starter is used ANSWER DOWNLOAD EXAMIANS APP
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