The armature of dc motor has `20Omega` resistance. It draws current of `1.5` ampere when run by `220` volts dc supply.
the value of back e.m.f. induced in it will be

The armature of a dc motor has 20 Omega resistance It draws a currrent of 1.5 A when run by a 220 V dc supply The value of the block emf induced in it is .

The armature of a DC motor has 20Omega resistance. It draws a current of 1.5 A when run by 200 V DC supply The value of back emf induced in it will be

The armature of a DC motor has 20Omega resistance. It draws a current of 1.5 A when run by 200 V DC supply The value of back emf induced in it will be

The armature of a DC motor has 20Omega resistance. It draws a current of 1.5 A when run by 200 V DC supply The value of back emf induced in it will be

The resistance of the armature of an electric motor is 55 ohm. The motor draw a current of 2 A when running at 220 V. What is the back e.m.f ?

In a dc motor, induced e.m.f. will be maximum

A d.c motor has internal resistance 4 ohms . It is operated at 220 volts and draws 5 ampere current . The useful mechanical power developed is :-

A 5 henry inductor carries a steady current of 2 ampere. How can a 50 volt self induced e.m.f. be made to appear in the inductor?

An electric motor operating at 200 V draws a current of 5 A at its full speed. The resistance of the armature is 10 Omega . Calculate the back e.m.f. and efficiency of the motor?