A 240 V D.C. series motor takes the current of 10 A at normal running condition and the field resistance is 0.3 ohm. If Torque remains the same and it is shunted by same field resistance value then...

A 240 V D.C. series motor takes the current of 10 A at normal running condition and the field resistance is 0.3 ohm. If Torque remains the same and it is shunted by same field resistance value then line current of motor is (estimated time 2 minutes)

a.
10 A

b.
20 A

c.
15 A

d.
5 A