The expression for absolute power density is:

A wave has a reflection coefficient of 0.68. Find the transmission coefficient of the wave.

Which of the following formulas correctly describes the radiation power density of an antenna?

If the rotational velocity of a dynamo armature is doubled, then the induced EMF will become:

The power of the electromagnetic wave with electric field intensity of 12 units and magnetic field intensity of 15 units is:

Which type of antennas are usually used in microwave frequencies and have an omnidirectional radiation pattern?

Calculate the phase constant of a wave having a frequency of 4.5 gigaradians per second and travelling with a velocity of 2.8 × 10⁸ meters per second.

The direction of rotation of a D.C. series motor can be changed by

In case of conductively compensated D.C. series motors, the compensating winding is provided

What is the most important use of the dot product in electromagnetics?