Electro Magnetic Induction And Alternating Currents Question 239

Question: A motor having an armature of resistance $ 2\Omega $ is designed to operate at 220 V mains. At full speed, it develops a back e.m.f. of 210V. When the motor is running at full speed, the current in the armature is [UPSEAT 2002]

Options:

A) 5A

B) 105A

C) 110A

D) 215A

Show Answer

Answer:

Correct Answer: A

Solution:

$ i=\frac{E-e}{R}=\frac{220-210}{2}=\frac{10}{2}=5A $



जेईई के लिए मॉक टेस्ट

एनसीईआरटी अध्याय वीडियो समाधान

दोहरा फलक