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Ward Leonard method is an ideal choice for motor which undergoes frequent starting, stopping, speed reversal.

Ward Leonard method is an ideal choice for motor which undergoes frequent starting, stopping, speed reversal. Correct Answer True

Absence of external resistance increases efficiency. Also, when the generator emf becomes less than the back emf of the motor, electrical power flows back from motor to generator, is converted to mechanical form and is returned to the mains via the driving ac motor. This aspect makes Ward Leonard method perfect for given application.

Related Questions

Statement : Residents from Model Colony coming under North Ward of City X have complained to the Ward Officer that for last three days the tap water in the ward is contaminated and no action is being initiated by municipal staff. Courses of Action : I. The Ward Officer of North Ward should initiate action against residents who have lodged complaints against municipal staff. II. The Ward Officer should ask his junior officer to visit Model Colony to assess the actual condition of water with his staff and to get samples of water tested from laboratories. III. The Ward Officer should ask Ward Engineer to check water installations and pipelines in the Model Colony area.
Statement : Residents from Model Colony coming under North Ward of City X have complained to the Ward Officer that for last three days the tap water in the ward is contaminated and no action is being initiated by municipal staff.

Courses of Action :
I. The Ward Officer of North Ward should initiate action against residents who have lodged complaints against municipal staff.
II. The Ward Officer should ask his junior officer to visit Model Colony to assess the actual condition of water with his staff and to get samples of water tested from laboratories.
III. The Ward Officer should ask Ward Engineer to check water installations and pipelines in the Model Colony area.
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In Ward Leonard speed control method for lowering the speed of the motor ______________
In Ward Leonard speed control method for increasing the speed of the motor ______________
Where D.C. motor of H.P. 12 or more requires frequent starting, stopping, reversing and speed control
Speed control by Ward Leonard method gives uniform speed variation
Speed-power characteristic for Ward Leonard speed control method _________________