DC Motors Which of the following law can be used to determine the direction of rotation of dc motor? Fleming's left hand rule Faraday's law Coloumb's law Lenz's law Fleming's left hand rule Faraday's law Coloumb's law Lenz's law ANSWER DOWNLOAD EXAMIANS APP
DC Motors The main disadvantage of the Ward-Leonard control method is High maintenance cost Low efficiency at high loads All of these High initial cost High maintenance cost Low efficiency at high loads All of these High initial cost ANSWER DOWNLOAD EXAMIANS APP
DC Motors A direct on line starter is used for starting motors Upto 15 HP Upto 5 HP Upto 20 HP Upto 10 HP Upto 15 HP Upto 5 HP Upto 20 HP Upto 10 HP ANSWER DOWNLOAD EXAMIANS APP
DC Motors When two dc series motor are commected in parallel, the resultant speed is Normal speed Zero More than the normal speed Loss than the normal speed Normal speed Zero More than the normal speed Loss than the normal speed ANSWER DOWNLOAD EXAMIANS APP
DC Motors The speed of a series motor at no load is Infinity 1000 rpm 4000 rpm 2000 rpm Infinity 1000 rpm 4000 rpm 2000 rpm ANSWER DOWNLOAD EXAMIANS APP
DC Motors If conditions for maximum power for a dc motor are established, the efficiency of the motor will be 100 % 80 to 90 % 60 to 70 % Less than 50% 100 % 80 to 90 % 60 to 70 % Less than 50% ANSWER DOWNLOAD EXAMIANS APP
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