DC Motors At the instant of starting when a D.C. motor is put on supply, it behaves like None of these A capacitive circuit A low resistance circuit A highly resistive circuit None of these A capacitive circuit A low resistance circuit A highly resistive circuit ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following motors is most suitable for signalling devices and many kinds of timers ? C. series motor C. shunt motor Reluctance motor Induction motor C. series motor C. shunt motor Reluctance motor Induction motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which D.C. motor is generally preferred for cranes and hoists? Differentially compounded motor Shunt motor Series motor Cumulatively compounded motor Differentially compounded motor Shunt motor Series motor Cumulatively compounded motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors In dc machines fractional pitch winding is used To reduce the generated emf To improve cooling To reduce the sparking To increase the generated emf To reduce the generated emf To improve cooling To reduce the sparking To increase the generated emf 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 If a D.C. shunt motor is working at no load and if shunt field circuit suddenly opens Motor will run at very slow speed Nothing will happen to the motor This will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses This will make armature to take heavy current, possibly burning it Motor will run at very slow speed Nothing will happen to the motor This will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses This will make armature to take heavy current, possibly burning it ANSWER DOWNLOAD EXAMIANS APP
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