DC Motors What will happen if the back emf of a dc motor vanishes suddenly? The motor will stop The motor will run noisy The armature may burn The motor will continue to run The motor will stop The motor will run noisy The armature may burn The motor will continue to run ANSWER DOWNLOAD EXAMIANS APP
DC Motors If conditions for maximum power for a dc motor are established, the efficiency of the motor will be 100 % 60 to 70 % 80 to 90 % Less than 50% 100 % 60 to 70 % 80 to 90 % Less than 50% ANSWER DOWNLOAD EXAMIANS APP
DC Motors A direct on line starter is used for starting motors Upto 5 HP Upto 20 HP Upto 10 HP Upto 15 HP Upto 5 HP Upto 20 HP Upto 10 HP Upto 15 HP ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following law can be used to determine the direction of rotation of dc motor? Fleming's left hand rule Coloumb's law Lenz's law Faraday's law Fleming's left hand rule Coloumb's law Lenz's law Faraday's law ANSWER DOWNLOAD EXAMIANS APP
DC Motors A dc motor is still used in industrial applications because it Is simple in construction Is cheap Provides fine speed control None of the listed here Is simple in construction Is cheap Provides fine speed control None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which motor has the poorest speed control? Shunt motor Differentially compounded motor Cummulative compounded motor Series motor Shunt motor Differentially compounded motor Cummulative compounded motor Series motor ANSWER DOWNLOAD EXAMIANS APP
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