A. Ohm
B. Henry
C. Ampere turns
D. Webers/metre
Related Mcqs:
- The core of a coil has a length of 200 mm. The inductance of coil is 6 mH. If the core length is doubled, all other quantities, remaining the same, the inductance will be_____________?
A. 3 mH
B. 12 mH
C. 24mH
D. 48mH - A 200 turn coil has an inductance of 12 mH. If the number of turns is increased to 400 turns, all other quantities (area, length etc.) remaining the same, the inductance will be___________?
A. 6 mH
B. 14 mH
C. 24 mH
D. 48 mH - Two coils have self-inductances of 10 H and 2 H, the mutual inductance being zero. If the two coils are connected in series, the total inductance will be_____________?
A. 6 H
B. 8 H
C. 12 H
D. 24 H - Which of the following is not a unit of inductance ?
A. Henry
B. Coulomb/volt ampere
C. Volt second per ampere
D. All of the above - The self-inductance of the coil may be defined as equal to the e.m.f. induced in volts when the current in the circuit changes at the rate of unit Weber turns
A. Yes
B. No - The inductance of a coil will increase under all the following conditions except______________?
A. when more length for the same number of turns is provided
B. when the number of turns of the coil increase
C. when more area for each turn is provided
D. when permeability of the core increases - The self inductances of two coils are 8 mH and 18 mH. If the co-efficients of coupling is 0.5, the mutual inductance of the coils is______________?
A. 4 mH
B. 5 mH
C. 6 mH
D. 12 mH - A coil induces 350 mV when the current changes at the rate of 1 A/s. The value of inductance is___________?
A. 3500 mH
B. 350 mH
C. 250 mH
D. 150 mH - The self-inductance of a solenoid is increased when a soft iron core is inserted into it. This is because the soft iron core_______________?
A. Decreases the resistance of the solenoid
B. Reduces the effect of eddy current
C. Improves the flux linkage between the turns of the coil
D. Increases the mutual inductance between the solenoid and the core - Self inductance of a coil depends upon________________?
A. current flowing
B. number of turns per unit length
C. voltage produce
D. all
