DC Motors Which method of braking is generally used in elevators? Rheostat braking Plugging Regenerative braking None of these Rheostat braking Plugging Regenerative braking None of these ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following law can be used to determine the direction of rotation of dc motor? Fleming's left hand rule Lenz's law Coloumb's law Faraday's law Fleming's left hand rule Lenz's law Coloumb's law Faraday's law ANSWER DOWNLOAD EXAMIANS APP
DC Motors The iron loss in dc motor depends on None of the listed here Speed only Flux only Both flux and speed None of the listed here Speed only Flux only Both flux and speed ANSWER DOWNLOAD EXAMIANS APP
DC Motors If the speed of a dc shunt motor is increased the back emf of the motor will Remains same Decrease Increase Become zero Remains same Decrease Increase Become zero ANSWER DOWNLOAD EXAMIANS APP
DC Motors A series motor will over speed when The field is opened The armature circuit is opened. The load is increase Load is removed The field is opened The armature circuit is opened. The load is increase Load is removed ANSWER DOWNLOAD EXAMIANS APP
DC Motors Excessive sparking at brushes may be caused due to Loose coupling Worn bearings Dirt on the commutator Misaligment of machine Loose coupling Worn bearings Dirt on the commutator Misaligment of machine ANSWER DOWNLOAD EXAMIANS APP
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