DC Motors The iron loss in dc motor depends on Flux only Both flux and speed Speed only None of the listed here Flux only Both flux and speed Speed only None of the listed here 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 For starting a dc motor a starter is required because It starts the motor It limits the starting current to a safe value It limits the speed of the motor None of the listed here It starts the motor It limits the starting current to a safe value It limits the speed of the motor None of the listed here ANSWER DOWNLOAD EXAMIANS APP
DC Motors The maximum end play of a motor is about 6 mm 2 mm 0.4 mm 10 mm 6 mm 2 mm 0.4 mm 10 mm ANSWER DOWNLOAD EXAMIANS APP
DC Motors Excessive sparking at brushes may be caused due to Loose coupling Worn bearings Misaligment of machine Dirt on the commutator Loose coupling Worn bearings Misaligment of machine Dirt on the commutator ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a D.C. series motor, if the armature current is reduced by 50%, the torque of the motor will be equal to 10% of the previous value 50% of the previous value 25% of the previous value 100% of the previous value 10% of the previous value 50% of the previous value 25% of the previous value 100% of the previous value ANSWER DOWNLOAD EXAMIANS APP
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