Electromagnetic induction In case all the flux from the current in coil 1 links with coil 2, the coefficient of coupling will be 0.5 2.0 2.5 1.0 0.5 2.0 2.5 1.0 ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction If current in a conductor increases then according to Lenz's law self-induced voltage will Aid the increasing current Aid the applied voltage Tend to decrease the amount of current Produce current opposite to the increasing current Aid the increasing current Aid the applied voltage Tend to decrease the amount of current Produce current opposite to the increasing current ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction 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 1000 N 400 N 300 N 100 N 1000 N 400 N 300 N 100 N ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction An average voltage of 10 V is induced in a 250 turns solenoid as a result of a change in flux which occurs in 0.5 second. The total flux change is 0.02 wb 0.2 wb 2 wb 20 wb 0.02 wb 0.2 wb 2 wb 20 wb ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction The inductance of a coil will increase under all the following conditions except When more area for each turn is provided When permeability of the core increases When the number of turns of the coil increase When more length for the same number of turns is provided When more area for each turn is provided When permeability of the core increases When the number of turns of the coil increase When more length for the same number of turns is provided ANSWER DOWNLOAD EXAMIANS APP
Electromagnetic induction A 500 turns solenoid develops an average induced voltage of 60 V. Over what time interval must a flux change of 0.06 Wb occur to produce such a voltage? 0.2 s 0.5 s 0.1 s None of the listed here 0.2 s 0.5 s 0.1 s None of the listed here ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS