Electrical Machines Which of the following is/are effects of armature reaction? increases the design cost increase the maintenance and repair increase the iron loss All of these increases the design cost increase the maintenance and repair increase the iron loss All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following generators are used in arc welding? differential compound generators shunt generators cumulative compound generators series generators differential compound generators shunt generators cumulative compound generators series generators ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a single phase capacitor start induction motor which of the following is valid? None of these. Rotation can be changed by reversing main winding terminals. Direction of rotation cannot be changed. Rotation can be changed by interchanging supply terminals. None of these. Rotation can be changed by reversing main winding terminals. Direction of rotation cannot be changed. Rotation can be changed by interchanging supply terminals. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A transformer has maximum efficiency at 3/4 load. The ratio of iron loss and full load copper loss is 16/9. 9/16. 3/4. 4/3. 16/9. 9/16. 3/4. 4/3. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which type of motors are preferred in lifts? DC compound motors. DC shunt motors. None of these DC series motors. DC compound motors. DC shunt motors. None of these DC series motors. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the load current and flux of a DC motor are held constant and voltage applied across it armature is increased by 5%, the speed of the motor will Depends on other factor. Reduce by 5%. Increase by 5%. Remain unchanged. Depends on other factor. Reduce by 5%. Increase by 5%. Remain unchanged. ANSWER DOWNLOAD EXAMIANS APP
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