Tropospheric scatter propagation is not subject to any fading. False True 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 None of these Front to back ratio TRUE ANSWER : ? YOUR ANSWER : ?
According to Coulomb’s law, the force of attraction or repulsion, between to electrical charges is directly proportional to the square of the distance between them. inversely proportional to the square of the distance between them. directly proportional to the distance between them. inversely proportional to the distance between them. TRUE ANSWER : ? YOUR ANSWER : ?
A negative point charge q = - 40 nC is moving with velocity of 6 × 106 m/s in a direction specited by unit vector uy + 0.6 uz. Find the magnitude of force vector on the moving particle by the field B = 2 ux + 3 uy + 5 uz mT and E = 2 ux - 3 uy + 5 uz KV/m 1144 μN. 244 μN. 144 μN. 1440 μN. TRUE ANSWER : ? YOUR ANSWER : ?
Fleming's right hand rule may be applied to an electric generator to find out the direction of rotor rotation. magnetic field. None of these induced emf. TRUE ANSWER : ? YOUR ANSWER : ?
A long straight wire carries a current I = 10A. At what distance is the magnetic field H = 1A/m? 1.29 m. 1.59 m. 1.19 m. 1.39 m. TRUE ANSWER : ? YOUR ANSWER : ?
Which of this statement is not characteristic of a static magnetic field magnetic flux lines are always closed. it is solenoidal. it is conservative. it has no sink or sources. TRUE ANSWER : ? YOUR ANSWER : ?
A pure inductor when connected across 220 V, 50 Hz supply consumes 100 W. From the above statement it can be concluded that the inductor is non linear. the inductor is made of thin wire. the above statement is false. the inductor has ferrite core. TRUE ANSWER : ? YOUR ANSWER : ?
The electric field on a plane is decribed by . The field due to a dipole and a monopole. none of above. a dipole. a monopole. TRUE ANSWER : ? YOUR ANSWER : ?
The radiation pattern of loop antenna is Semicircle Circle Elliptical Cardoid or Limacon TRUE ANSWER : ? YOUR ANSWER : ?