Electrical Machines What is the increase in the torque expressed as percentage of initial torque, if current drawn by the dc series motor is increased from 10A to 11A? 41% 10% 21% 11% 41% 10% 21% 11% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The working principle of transformer depends on Coulombs law. Faradays law of electromagnetic induction. Newtons law. Amperes law. Coulombs law. Faradays law of electromagnetic induction. Newtons law. Amperes law. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Skewing of the rotor in a 3 - Φ squirrel cage induction motor reduces noise and pullout torque, but increase parasitic and starting torque. noise and parasitic torque, but increase starting and pull-out torque. noise, parasitic and starting torque, but increase pull out torque. noise, parasitic torque, starting torque and pull out torque. noise and pullout torque, but increase parasitic and starting torque. noise and parasitic torque, but increase starting and pull-out torque. noise, parasitic and starting torque, but increase pull out torque. noise, parasitic torque, starting torque and pull out torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A delta/star transformer is connected in parallel to a star/delta transformer. The turn ratio former is x times latter, the x is 1/3 1/√3 3 √3 1/3 1/√3 3 √3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC compound motor the field regulator is provided to demagnetize the field partially. control the armature flux. control the field flux. limit the armature current. demagnetize the field partially. control the armature flux. control the field flux. limit the armature current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The polarity of a DC generator can be reversed by reversing field electric current as well as direction of rotation. any of above. increasing field current. reversing the field current. reversing field electric current as well as direction of rotation. any of above. increasing field current. reversing the field current. ANSWER DOWNLOAD EXAMIANS APP
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