DC Motors One D.C. motor drives another D.C. motor. The second D.C. motor when excited and driven None of these Does not run as a generator Also runs as a motor comes to stop after sometime Runs as a generator None of these Does not run as a generator Also runs as a motor comes to stop after sometime Runs as a generator ANSWER DOWNLOAD EXAMIANS APP
DC Motors Where D.C. motor of H.P. 12 or more requires frequent starting, stopping, reversing and speed control All above can be used Four point starter is used Three point starter is used Drum type controller is used All above can be used Four point starter is used Three point starter is used Drum type controller is used ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following motors is most suitable for signalling devices and many kinds of timers ? Reluctance motor Induction motor C. shunt motor C. series motor Reluctance motor Induction motor C. shunt motor C. series motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following losses are significantly reduced by laminating the core of a D.C. generator? Hysteresis losses Eddy current losses Copper losses Windage losses Hysteresis losses Eddy current losses Copper losses Windage losses 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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