A 240 V DC series motor takes 40 A when giving its rated torque at 150 – McqOptions

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1.	A 240 V DC series motor takes 40 A when giving its rated torque at 1500 rpm, operating in the linear region of magnetization characteristics. If the armature and field resistance together is 0.3 Ω, then the value of resistance to be added to obtain rated torque at 1000 rpm is:
A.	1.9 Ω
B.	1.6 Ω
C.	2.2 Ω
D.	2.5 Ω
Answer» B. 1.6 Ω

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