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 12 mH 48 mH 24 mH 6 mH TRUE ANSWER : ? YOUR ANSWER : ?
In case of an inductance, current is proportional to Voltage across the inductance Both of the listed here Magnetic field None of the listed here TRUE ANSWER : ? YOUR ANSWER : ?
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 10 H 12 H 9 H 6 H TRUE ANSWER : ? YOUR ANSWER : ?
Air-core coils are practically free from Hysteresis losses Both Hysteresis losses & Eddy current losses None of the listed here Eddy current losses TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is unit of inductance? Weber/metre Hennry Ampere turns Ohm TRUE ANSWER : ? YOUR ANSWER : ?
Both the number of turns and the core length of an inductive coil are doubled. Its self-inductance will be Doubled Quadrupled Halved Unaffected TRUE ANSWER : ? YOUR ANSWER : ?
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 100 N 400 N 300 N 1000 N TRUE ANSWER : ? YOUR ANSWER : ?
The magnitude of the induced e.m.f. in a conductor depends on the Amount of flux linkages Amount of flux cut Flux density of the magnetic field Rate of change of flux-linkages TRUE ANSWER : ? YOUR ANSWER : ?
Which of the fpllowing inductor will have the least eddy current losses ? Laminated iron core Iron core Powdered iron core Air core TRUE ANSWER : ? YOUR ANSWER : ?
Increasing the field or increasing the current will decrease the force on the conductor. No Yes TRUE ANSWER : ? YOUR ANSWER : ?