Calculate the speed which the maximum torque occurs using the formula for the slip rpmso

Solved Step by Step With Explanation- Max Torque Speed

Questions

Solved Step by Step With Explanation- Max Torque Speed

Answer

Ns = synchronous speed (in RPM)

f = frequency (in Hz)

Calculate the slip (S) at full load using the formula:

S = (Ns - Nf) / Ns

S = (750 - 720) / 750

S = 30 / 750

I2 = V / Zr

Where:

I2 ≈ 12.658 - j88.889 A

Calculate the rotor current at full load by multiplying the rotor current at standstill by the slip (S):

R2 = 0.03 Ω (resistive part)

Now, calculate the speed at which the maximum torque occurs using the formula for the slip: