DC Motors Which of the following application requires high starting torque? Lathe machine Centrifugal pump Locomotive Air blower Lathe machine Centrifugal pump Locomotive Air blower 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 Less than 50% 1 Anywhere between 75% and 90% Around 90% Less than 50% 1 Anywhere between 75% and 90% Around 90% ANSWER DOWNLOAD EXAMIANS APP
DC Motors In D.C. shunt motors as load is reduced The speed will increase in proportion to reduction in load The speed will remain almost/constant The speed will increase abruptly The speed will reduce The speed will increase in proportion to reduction in load The speed will remain almost/constant The speed will increase abruptly The speed will reduce ANSWER DOWNLOAD EXAMIANS APP
DC Motors If the supply voltage for a D.C. motor is increased, which of the following will decrease? All of these Starting torque Operating speed Full-load current All of these Starting torque Operating speed Full-load current ANSWER DOWNLOAD EXAMIANS APP
DC Motors When the speed of dc motor increases, its armature current Increases Decreases None of the listed here Remains same Increases Decreases None of the listed here Remains same ANSWER DOWNLOAD EXAMIANS APP
DC Motors Carbon brushes are preferable to copper brushes because _____ They reduce sparking They have lower resistance They have longer life They reduce armature reaction They reduce sparking They have lower resistance They have longer life They reduce armature reaction ANSWER DOWNLOAD EXAMIANS APP
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