DC Motors Which of the following law can be used to determine the direction of rotation of dc motor? Faraday's law Lenz's law Fleming's left hand rule Coloumb's law Faraday's law Lenz's law Fleming's left hand rule Coloumb's law ANSWER DOWNLOAD EXAMIANS APP
DC Motors A direct on line starter is used for starting motors Upto 10 HP Upto 20 HP Upto 15 HP Upto 5 HP Upto 10 HP Upto 20 HP Upto 15 HP Upto 5 HP ANSWER DOWNLOAD EXAMIANS APP
DC Motors If the supply voltage for a D.C. motor is increased, which of the following will decrease? Full-load current All of these Starting torque Operating speed Full-load current All of these Starting torque Operating speed ANSWER DOWNLOAD EXAMIANS APP
DC Motors The main disadvantage of the Ward-Leonard control method is All of these High maintenance cost Low efficiency at high loads High initial cost All of these High maintenance cost Low efficiency at high loads High initial cost ANSWER DOWNLOAD EXAMIANS APP
DC Motors For the same H.P. rating and full load speed, following motor has poor starting torque Differentially compounded Cumulatively compounded Shunt Series Differentially compounded Cumulatively compounded Shunt Series ANSWER DOWNLOAD EXAMIANS APP
DC Motors Small dc motors up to 5 HP usually have 6 poles 4 poles 2 poles 8 poles 6 poles 4 poles 2 poles 8 poles ANSWER DOWNLOAD EXAMIANS APP
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