Which of the following works on torque on the current carrying conductor placed in magnetic field ?

Related Mcqs:

1. An electric current induced within the body of a conductor when that conductor either moves through a non uniform magnetic field or in a region where there is a change in magnetic flux is called_____________?

   A. Induced current B. Eddy current C. Back emf D. None of the above...

2. A conductor carries 125 amperes of current under 60° to a magnetic field of 1.1 tesla. The force on the conductor will be nearly______________?

   A. 50 N B. 120 N C. 240 N D. 480 N...

3. Find the force acting on a conductor 3m long carrying a current of 50 amperes at right angles to a magnetic field having a flux density of 0.67 tesla

   A. 100 N B. 400 N C. 600 N D. 1000 N...

4. A conductor 2 meters long moves at right angles to a magnetic field of flux density 1 tesla with a velocity of 12.5 m/s. The induced e.m.f. in the conductor will be____________?

   A. 10 V B. 15 V C. 25V D. 50V...

5. Lagging of changes in the magnetization of a substance behind changes in the magnetic field as the magnetic field is varied is known as magnetic_____________?

   A. Retaintivity B. Permeability C. Flux D. Hysteresis...

6. The emf induced in a conductor of unit length moving with unit velocity at right angles to a magnetic field is equal to_____________?

   A. Magnetic flux density B. Torque C. Mutual induction D. Motional emf...

7. _______________has the least value of starting torque to full load torque ratio?

   A. D.C. shunt motor B. D.C. series motor C. Squirrel cage induction motor D. Slip ring induction motor...

8. The resistance of a conductor of diameter d and length l is R Ω. If the diameter of the conductor is halved and its length is doubled, the resistance will be

   A. R Ω B. 2R Ω C. 4R Ω D. 8R Ω...

9. Current produced by moving the loop of wire across a magnetic field is called_____________?

   A. A.C current B. D.C current C. induced current D. mean square current...

10. Reversing the field or the current will reverse the force on the conductor

    A. Yes B. No...