DC Motors Excessive sparking at brushes may be caused due to Dirt on the commutator Loose coupling Misaligment of machine Worn bearings Dirt on the commutator Loose coupling Misaligment of machine Worn bearings ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following law can be used to determine the direction of rotation of dc motor? Coloumb's law Lenz's law Fleming's left hand rule Faraday's law Coloumb's law Lenz's law Fleming's left hand rule Faraday's law ANSWER DOWNLOAD EXAMIANS APP
DC Motors The variable resistor shunting the field of a dc series motor is called a Armature divertor Voltage regulator Potential divider Field divertor Armature divertor Voltage regulator Potential divider Field divertor ANSWER DOWNLOAD EXAMIANS APP
DC Motors Motor starter are essential for Accelerating the motor Starting the motor Preventing fuse blowing Avoiding excessive starting current Accelerating the motor Starting the motor Preventing fuse blowing Avoiding excessive starting current ANSWER DOWNLOAD EXAMIANS APP
DC Motors Armature reaction in dc motor is increased When the armature current increases By interpoles When the armature current decreases When the field current increases When the armature current increases By interpoles When the armature current decreases When the field current increases ANSWER DOWNLOAD EXAMIANS APP
DC Motors No load speed of which of the following motor will be highest? Shunt motor Series motor Cummulative compounded motor Differentially compounded motor Shunt motor Series motor Cummulative compounded motor Differentially compounded motor ANSWER DOWNLOAD EXAMIANS APP
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