In above problem the induced emf will be reduced to half if the conductor moves an angle of 30° to the direction of field. 45° to the direction of field. 60° to the direction of field. 75° to the direction of field. TRUE ANSWER : ? YOUR ANSWER : ?
A point pole has a strength of 4π × 10-4 weber. The force in newtons on a point pole of 4π × 1.5 × 10-4 weber placed at a distance of 10 cm from it will be 20 N. 15 N. 7.5 N. 3.75 N. TRUE ANSWER : ? YOUR ANSWER : ?
Two straight parallel conductors carry equal currents in opposite direction. The force between them is zero. none of above. attractive. repulsive. TRUE ANSWER : ? YOUR ANSWER : ?
Biot-Savarts law states the relation between magnetic intensity and (A), (B), and (D) are all correct. volume current only. filament current only. surface current only. TRUE ANSWER : ? YOUR ANSWER : ?
________ at a point is defined as the force experienced per unit positive charge at a point placed in the electric field. None of these Electric flux. Magnetic flux density. Electric intensity. TRUE ANSWER : ? YOUR ANSWER : ?
Which is the major factor for determining whether a medium is free space, lossless dielectric or a good conductor Constitutive parameters. Attenuation constant. Loss tangent. Reflector coefficient. TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is multiband HF receiving antenna? Conical horn Log-periodic Folded dipole Square loop TRUE ANSWER : ? YOUR ANSWER : ?
The shape of B-H curve for air gap is ellipse. parabola. hyperbola. straight line. TRUE ANSWER : ? YOUR ANSWER : ?
Which antenna is a wideband antenna? Folded dipole None of these Hertz antenna Marconi antenna TRUE ANSWER : ? YOUR ANSWER : ?
Magnetic field intensity at centre of circular coil, of diameter 1 m and carrying a current of 2 A is 2 A/m. 4 A/m. 1 A/m. 8 A/m. TRUE ANSWER : ? YOUR ANSWER : ?