-
Neglecting all losses, the developed torque (T) of a d.c. separately excited motor, operating under constant terminal voltage, is related to its output power (P) as
-
- T ∝ √P
- T ∝ P
- T² ∝ P³
- T is independent of P
Correct Option: C
From the relation,
2πN × T= Eb × Iα = power developed in armature
where, N = speed of motor
Eb = induced back emf
Iα = armature current
∴ T ∝ power developed in armature.
Neglecting all losses, power output P will be equal to power developed in armature.
∴ T ∝ P
