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

Q. Antenna beamwidth is

View solution

Q. The pure capacitor connected across an A.C. voltage consumed 20 W. This is due to

View solution

Q. A dominant wave is characterised by which of the following?

View solution

Q. The cut off wavelength λc for TE₂₀ mode for a standard rectangles waveguide is

View solution

Q. F2 layer of atmosphere extends from

View solution

Q. Whereas resonant antenna is bidirectional, non-resonant antenna is unidirectional.

View solution

Q. In radar system if the antenna diameter is increased by a factor of 4, the minimum range will increased by a factor of

View solution

Q. Which of the following antennas is λ /4 length?

View solution

Q. The number of lobes on each side of a 31 resonant antenna will be

View solution

Q. Analysis of EM wave in waveguide based on

View solution

Q. The main difference between the broadside arrays and end fire arrays is that

View solution

Q. The charges between a hollow and solid metal spheres reside

View solution

Q. Maximum usable frequency is [fmuf]

View solution