DC Motors Dc shunt motors are used for driving Cranes Hoist Trains Machine tools Cranes Hoist Trains Machine tools ANSWER DOWNLOAD EXAMIANS APP
DC Motors The dirction of rotation of a dc series motor can be changed by None of the listed here Interchanging field terminals Interchanging supply terminals Either of Interchanging field or Interchanging supply None of the listed here Interchanging field terminals Interchanging supply terminals Either of Interchanging field or Interchanging supply ANSWER DOWNLOAD EXAMIANS APP
DC Motors The speed of a motor falls from 1100 r.p.m. at no-load to 1050 r.p.m. at rated load. The speed regulation of the motor is 4.76% 6.77% 8.85% 2.22% 4.76% 6.77% 8.85% 2.22% ANSWER DOWNLOAD EXAMIANS APP
DC Motors The mechanical power developed in a dc motor is maximum when back emf is equal to _____ the applied voltage. Twice None of the listed here Half One-third Twice None of the listed here Half One-third ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following motor is preferred for operation in highly explosive atmosphere? Air motor Series motor Battery operated motor Shunt motor Air motor Series motor Battery operated motor Shunt motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following can be used for controlling the speed of a dc motor? Thyristor Thermistor Transistor Thyratron Thyristor Thermistor Transistor Thyratron ANSWER DOWNLOAD EXAMIANS APP
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