DC Motors For a D.C. shunt motor if the excitation is changed Torque will change but power will remain constant Torque will remain constant Torque, power and speed, all will change Torque and power both will change Torque will change but power will remain constant Torque will remain constant Torque, power and speed, all will change Torque and power both will change ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following motor has the poorest speed regulation? Differentially compound motor Cummulative compound motor Series motor Shunt motor Differentially compound motor Cummulative compound motor Series motor Shunt motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors The torque developed by a dc motor is directly proportional to None of the listed here Armature resistance × applied voltage Flux per pole × armature current Armature resistance × armature current None of the listed here Armature resistance × applied voltage Flux per pole × armature current Armature resistance × armature current ANSWER DOWNLOAD EXAMIANS APP
DC Motors Small dc motors up to 5 HP usually have 4 poles 2 poles 6 poles 8 poles 4 poles 2 poles 6 poles 8 poles ANSWER DOWNLOAD EXAMIANS APP
DC Motors Where D.C. motor of H.P. 12 or more requires frequent starting, stopping, reversing and speed control Drum type controller is used All above can be used Three point starter is used Four point starter is used Drum type controller is used All above can be used Three point starter is used Four point starter is used ANSWER DOWNLOAD EXAMIANS APP
DC Motors The starting resistance of a DC motor is generally 1000 Ω Around 500 Ω Low Infinitely large 1000 Ω Around 500 Ω Low Infinitely large ANSWER DOWNLOAD EXAMIANS APP
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