Mutual inductance between two magnetically coupled coils depends on the number of their turns. permeability of core. all of above. cross sectional area of their common core. TRUE ANSWER : ? YOUR ANSWER : ?
If the static magnetic flux density is B, then Curl of B = 0. Divergence of B = 0. Divergence of B = J. Curl of B = J. TRUE ANSWER : ? YOUR ANSWER : ?
In an inductor current cannot change abruptly. Comment on the statement. True. Cannot comment. False. True partially. TRUE ANSWER : ? YOUR ANSWER : ?
In case of antenna the ratio of the power radiated in the desired direction to the power radiated in the opposite direction is known as Loss coefficient Transmission efficiency Front to back ratio None of these TRUE ANSWER : ? YOUR ANSWER : ?
The minimum height of outer atmosphere is 400 km 150 km 100 km 200 km TRUE ANSWER : ? YOUR ANSWER : ?
For DC voltage an inductor is virtually a depends on magnitude of voltage. short circuit. open circuit. depends on polarity. TRUE ANSWER : ? YOUR ANSWER : ?
A wire 1 m long carries a current of 5A and is at an angle of 30o with B = 1.5 wb/m2. Magnitude of force is 2 N. 5 N. 3.75 N. 2.5 N. TRUE ANSWER : ? YOUR ANSWER : ?
The statement which is not correct from the following: An electric flux line is an imaginary path or a line drawn in such a way, that its direction at any point is the direction of electric field at that point. Gauss’s static that divergence of D = ρu. Gauss’s law states that total electric flux through any surface is equal to the total charge enclosed by surface. For a uniform long charged line with l1 c/m the electric field intensity E is given as E = ρL/(π ε0.r). TRUE ANSWER : ? YOUR ANSWER : ?
The critical frequency of ‘F’ layer is greater than 30 MHz. True False TRUE ANSWER : ? YOUR ANSWER : ?
A conductor of length 1 metre moves at right angles to magnetic field of flux density 1 Wb/m2 with a velocity of 25 m/s. The induced emf in the conductor will be 25 V. 50 V. 100 V. 75 V. TRUE ANSWER : ? YOUR ANSWER : ?