DC Motors What will happen if the back emf of a dc motor vanishes suddenly? The armature may burn The motor will continue to run The motor will run noisy The motor will stop The armature may burn The motor will continue to run The motor will run noisy The motor will stop ANSWER DOWNLOAD EXAMIANS APP
DC Motors Dc shunt motors are used for driving Hoist Trains Cranes Machine tools Hoist Trains Cranes Machine tools ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a D.C. shunt motor, under the conditions of maximum power, the current in the armature will be More than full-load current Rated full-load current Less than full-load current Almost negligible More than full-load current Rated full-load current Less than full-load current Almost negligible ANSWER DOWNLOAD EXAMIANS APP
DC Motors At the instant of starting when a D.C. motor is put on supply, it behaves like A capacitive circuit None of these A highly resistive circuit A low resistance circuit A capacitive circuit None of these A highly resistive circuit A low resistance circuit ANSWER DOWNLOAD EXAMIANS APP
DC Motors If a D.C. shunt motor is working at full load and if shunt field circuit suddenly opens This will make armature to take heavy current, possibly burning it This will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses Nothing will happen to motor Motor will come to stop This will make armature to take heavy current, possibly burning it This will result in excessive speed, possibly destroying armature due to excessive centrifugal stresses Nothing will happen to motor Motor will come to stop ANSWER DOWNLOAD EXAMIANS APP
DC Motors In D.C. shunt motors as load is reduced The speed will increase abruptly The speed will reduce The speed will increase in proportion to reduction in load The speed will remain almost/constant The speed will increase abruptly The speed will reduce The speed will increase in proportion to reduction in load The speed will remain almost/constant ANSWER DOWNLOAD EXAMIANS APP
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