DC Motors For constant torque drive which speed control method is preferred? Armature voltage control Shunt armature control Field control Mechanical loading system Armature voltage control Shunt armature control Field control Mechanical loading system 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 100% of the previous value 25% of the previous value 50% of the previous value 10% of the previous value 100% of the previous value 25% of the previous value 50% of the previous value 10% of the previous value ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following loss in a D.C. generator varies significantly with the load current? Windage loss Field copper loss Armature copper loss None of these Windage loss Field copper loss Armature copper loss None of these ANSWER DOWNLOAD EXAMIANS APP
DC Motors In case the conditions for maximum power for a D.C. motor are established, the efficiency of the motor will be Anywhere between 75% and 90% 1 Around 90% Less than 50% Anywhere between 75% and 90% 1 Around 90% Less than 50% ANSWER DOWNLOAD EXAMIANS APP
DC Motors The iron loss in dc motor depends on Flux only None of the listed here Both flux and speed Speed only Flux only None of the listed here Both flux and speed Speed only ANSWER DOWNLOAD EXAMIANS APP
DC Motors For starting a dc motor a starter is required because It limits the starting current to a safe value It limits the speed of the motor It starts the motor None of the listed here It limits the starting current to a safe value It limits the speed of the motor It starts the motor None of the listed here ANSWER DOWNLOAD EXAMIANS APP
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