Q. Microwave signals transmitted towards the sky are

View solution

Q. Radiation intensity does not depend upon

View solution

Q. Δ²V = - ρ/E is known as __________ equation

View solution

Q. A vertical earthed antenna is resonant when its physical height is equal to

View solution

Q. Which of the following is a vector quantity?

View solution

Q. Velocity of the wave when it passes from air into sphere

View solution

Q. The ratio of the directivity of an end fire antenna to that of a broadside antenna is

View solution

Q. If the electric field intensity associated with a uniform plane electromagnetic wave travelling in a perfect dielectric medium is given by E(z, t) = 10 cos (2π x 10⁷t - 0.1 πz) volt/metre, then the velocity of the travelling wave is

View solution

Q. The absorption of radio waves by atmosphere depends on

View solution

Q. For transmission-line matching over range of frequencies, it is best to use a

View solution

Q. For a reflection co-efficient of 0.5, the value of SWR is

View solution

Q. A rectangular waveguide having TE₁₀ mode as dominant mode is having a cut off frequency of 18 GHz for the TE₃₀ mode. The inner broad wall dimension of the rectangular waveguide is

View solution

Q. A 50 π characteristic impedance line is connected to a load which shows a reflection coefficients of 0.268. If Vin = 15 volt, then the net power delivered to the load will be

View solution

Q. 1 dB is equal to __________ nepier

View solution

Q. ∇. J̅ = 0 is frequently known as

View solution

Q. A rhombic antenna is a

View solution

Q. Diffraction of electromagnetic waves

View solution

Q. When a particular mode is excited in a waveguide, these appears an extra electric components in the direction of propagation. The resulting mode is

View solution

Q. An antenna has a gain of 44 dB. Assuming that the main beam of the antenna is circular in cross-section the beamwidth will be

View solution

Q. In cellphone communication base antennas are connected to other base antennas in

View solution