DC Motors Ward-Leonard control is basically a Armature resistance control method Voltage control method Field divertor method Field control method Armature resistance control method Voltage control method Field divertor method Field control method ANSWER DOWNLOAD EXAMIANS APP
DC Motors The iron loss in dc motor depends on Both flux and speed None of the listed here Speed only Flux only Both flux and speed None of the listed here Speed only Flux only ANSWER DOWNLOAD EXAMIANS APP
DC Motors In D.C. machines the residual magnetism is of the order of 50 to 75 percent 20 to 25 percent 10 to 15 percent 2 to 3 percent 50 to 75 percent 20 to 25 percent 10 to 15 percent 2 to 3 percent ANSWER DOWNLOAD EXAMIANS APP
DC Motors If the supply voltage for a D.C. motor is increased, which of the following will decrease? Starting torque All of these Full-load current Operating speed Starting torque All of these Full-load current Operating speed 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 1 Anywhere between 75% and 90% Around 90% Less than 50% 1 Anywhere between 75% and 90% Around 90% Less than 50% ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which method of braking is generally used in elevators? Regenerative braking None of these Rheostat braking Plugging Regenerative braking None of these Rheostat braking Plugging ANSWER DOWNLOAD EXAMIANS APP
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