DC Motors The commutating winding is basically used in a dc machine To control the speed of machine To improve commutation To reduce armature reaction None of the listed here To control the speed of machine To improve commutation To reduce armature reaction None of the listed here 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 In a dc motor if the back emf is absent Motor will burn Motor will not run at all Motor will run at very high speed Motor will run at very slow speed Motor will burn Motor will not run at all Motor will run at very high speed Motor will run at very slow speed ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following can be used for controlling the speed of a dc motor? Thermistor Thyristor Transistor Thyratron Thermistor Thyristor Transistor Thyratron ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a dc motor constant torque is produced due to Commutator End plates Rotor laminations Pole shoes Commutator End plates Rotor laminations Pole shoes ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a dc compound machine, Series field winding plays dominant role Either can play dominant role Both play equally dominant role Shunt field winding plays dominant role Series field winding plays dominant role Either can play dominant role Both play equally dominant role Shunt field winding plays dominant role ANSWER DOWNLOAD EXAMIANS APP
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