engineering recuitment UPPCL Technician Electrician 2022 Mock Test Electrical Machines DC Motor DC Motor Types
For a DC series motor, which of the following expression is correct assuming torque (T) versus armature current (Ia) characteristics unsaturated ?
Where \(\phi\) = air gap flux
1
T ∝ ϕ√Ia
2
T ∝ ϕIa
3
T ∝ \(\sqrt{ ϕI_a}\)
4
T ∝ ϕ2I2a