Q. Which of the following antenna is best guided by a waveguide?

View solution

Q. Poynting vector is the rate of energy flow having

View solution

Q. A ship-to-ship communication system is plagued by fading. The best solution seems to be the use of

View solution

Q. If a wave is propagated in free space, it will be in nature of

View solution

Q. When the height of a vertical earthed antenna is less than λ/4

View solution

Q. Which of the following is a circularly polarized antenna?

View solution

Q. During day time ionosphere consist of

View solution

Q. To couple a coaxial line to a parallel wire line, it is best to use a

View solution

Q. Which of the following is λ/2 length?

View solution

Q. Which of the following is the main difference between waveguide and transmission line?

View solution

Q. Television signals are propagated as ground waves.

View solution

Q. The characteristic impedance of loss less transmission line is

View solution

Q. For a hollow waveguide, the axial current must necessarily be

View solution

Q. Industrial heating furnaces such as arc and induction furnaces operate on __________ power factor

View solution

Q. In order to receive a vertical polarized wave, the conductor of the dipole should be mounted

View solution

Q. VSWR can have any value between

View solution

Q. The input impedance for folded dipole antenna (two half dipole) is

View solution

Q. Capacitance hats are installed on low frequency antenna is

View solution

Q. Surface impedance at high frequencies is a consideration for

View solution

Q. In a uniform plane wave E and H are related by

View solution