The two conductors of a transmission line carry equal current I in opposite directions. The force on each conductor is________________?

Related Mcqs:

1. Two long parallel conductors carry 100 A. If the conductors are separated by 20 mm, the force per meter of length of each conductor will be_____________?

   A. 100 N
   B. 10 N
   C. 1 N
   D. 0.1 N

2. Two infinitely long parallel conductors in vacuum any separated 1 metre between centers >then a current of 1 ampere flows the. uk each conductor, produce on each other a force of_________________?

   A. 2 x 1(T2 N/m)
   B. 2 x KT3 N/m
   C. 2 x 10″5 N/m
   D. 2x 1(T7 N/m)

3. A 300 mm long conductor is carrying a current of 10 A and is situated at right angles to a magnetic field having a flux density of 0.8 T ; the force on the conductor will be____________?

   A. 240 N
   B. 24 N
   C. 2.4 N
   D. 0.24 N

4. A conductor of length L has current I passing through it, when it is placed parallel to a magnetic field. The force experienced by the conductor will be______________?

   A. zero
   B. BLI
   C. B2LI
   D. BLI2

5. What is the magnitude and the direction of force per 1.1m length of a pair of conductors of a direct current linecarrying 10 amperes and spaced 100 mm apart ?

   A. 22 x 10″8 N
   B. 22 x 10″7 N
   C. 22 x 10-6 N
   D. 22 x 10″5 N

6. The force between two long parallel conductors is inversely proportional to_____________?

   A. radius of conductors
   B. current in one conductor
   C. product of current in two conductors
   D. distance between the conductors

7. The materials are a bit inferior conductors of magnetic flux than air

   A. ferromagnetic
   B. paramagnetic
   C. diamagnetic
   D. dielectric

8. The direction of magnetic lines of force is________________?

   A. from south pole to north pole
   B. from north pole to south pole
   C. from one end of the magnet to another
   D. none of the above

9. The change of cross-sectional area of conductor in magnetic field will affect______________?

   A. reluctance of conductor
   B. resistance of conductor
   C. A. and B. both in the same way
   D. none of the above

10. The initial permeability of an iron rod is________________?

    A. the highest permeability of the iron rod
    B. the lowest permeability of the iron rod
    C. the permeability at the end of the iron rod
    D. the permeability almost in non-magnetised state