DC Motors A dc series motor is best suited for driving None of the listed here Shear and punches Cranes and hoists Machine tools None of the listed here Shear and punches Cranes and hoists Machine tools ANSWER DOWNLOAD EXAMIANS APP
DC Motors If a dc motor is comnected across the AC supply it will Burn due to heat produced in the field winding by eddy currents Not run Run at normal speed Run at lower speed Burn due to heat produced in the field winding by eddy currents Not run Run at normal speed Run at lower speed ANSWER DOWNLOAD EXAMIANS APP
DC Motors The mechanical power developed by a shunt motor will be maximum when the ratio of back emf to applied voltage is 0.5 4.0 1.0 2.0 0.5 4.0 1.0 2.0 ANSWER DOWNLOAD EXAMIANS APP
DC Motors Carbon brushes are preferable to copper brushes because _____ They have longer life They reduce armature reaction They reduce sparking They have lower resistance They have longer life They reduce armature reaction They reduce sparking They have lower resistance ANSWER DOWNLOAD EXAMIANS APP
DC Motors A dc motor is still used in industrial applications because it None of the listed here Is simple in construction Provides fine speed control Is cheap None of the listed here Is simple in construction Provides fine speed control Is cheap ANSWER DOWNLOAD EXAMIANS APP
DC Motors The speed of a series motor at no load is 4000 rpm 1000 rpm 2000 rpm Infinity 4000 rpm 1000 rpm 2000 rpm Infinity ANSWER DOWNLOAD EXAMIANS APP
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