DC Motors For starting a dc motor a starter is required because It limits the starting current to a safe value None of the listed here It limits the speed of the motor It starts the motor It limits the starting current to a safe value None of the listed here It limits the speed of the motor It starts the motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors If a dc motor is comnected across the AC supply it will Not run Run at lower speed Run at normal speed Burn due to heat produced in the field winding by eddy currents Not run Run at lower speed Run at normal speed Burn due to heat produced in the field winding by eddy currents ANSWER DOWNLOAD EXAMIANS APP
DC Motors In a dc motor, the brushes are shifted from the mechanical neutral plane in a direction opposite to the rotation to _____ Increase speed Produce flat characteristics Decrease speed Reduce sparking Increase speed Produce flat characteristics Decrease speed Reduce sparking ANSWER DOWNLOAD EXAMIANS APP
DC Motors The friction and windage losses in a dc motor depends upon Armature current Speed Flux Field and armature resistance Armature current Speed Flux Field and armature resistance 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 4.0 0.5 2.0 1.0 4.0 0.5 2.0 1.0 ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following loss in a D.C. generator varies significantly with the load current? Field copper loss None of these Windage loss Armature copper loss Field copper loss None of these Windage loss Armature copper loss ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS