When is the mechanical power developed by a dc motor maximum?
A. Back emf is equal to applied voltage.
B. Back emf is equal to zero.
C. Back emf is equal to half the applied voltage.
D. None of the above.
Answer:C
When is the mechanical power developed by a dc motor maximum?
A. Back emf is equal to applied voltage. B. Back emf is equal to zero. C. Back emf is equal to half the applied voltage. D. None of the above.