Question

Calculate the value of the angular acceleration of the DC shunt motor using the given data: J = 1 kg-m^2, load torque = 1 N-m, motor torque = 2 N-m.

(a) 1 rad/s^2

(b) 2 rad/s^2

(c) 3 rad/s^2

(d) 5 rad/s^2

I got this question in class test.

The query is from Dynamic Braking of DC Shunt Motors topic in chapter Braking of DC Motors & Induction Motors of Electric Drives

Answer 1

Correct option is (a) 1 rad/s^2

The best explanation: Using the dynamic equation of motor J×(angular acceleration) = Motor torque – Load torque: 1×(angular acceleration) = 2-1=1, angular acceleration=1 rad/s^2.