58351. Power gain of antenna equals directive gain in VHF and UHF range if and only if efficiency of the antenna is
58352. Earlier name of Sulthan Batheri?
58353. For a plane good conductor, skin depth varies
58354. When a plane wave travelling in free space is incident normally on a medium having εr = 4.0, then fraction of power transmitted into the medium is given by
58355. For broadside array, maxima will be obtain at
58356. Surface impedance at high frequencies is a consideration for
58357. The unit of displacement density is
58358. Dish antennas are
58359. When microwave signals follow the curvature of the earth, this is known as
58360. Characteristic wave impedance is
58361. The attenuation factor a and phase shift factor β for a wave propagated in a good dielectric having are given by
58362. Consider isotropic radiator radiating a power of 1 watt. At a distance of 1 metre, the power per unit area with equal
58363. Cassegrain feed is used with a parabolic reflection to
58364. Consider an arbitrary distribution of conducting bodies in a charge free space according to the uniqueness theorem, which of following are required to be specified in order that the field is uniquely determined everywhere? Total charge on each conductorPotential at each conductor surfacePotential at same of conductor and total charge on the remainderTotal charge as well as potential gradient on each conductor surface Select the correct answer using the codes given below codes
58365. That is ......... utopian idea.?
58366. Which of the following is a better propagation mode to propagate television frequency modulation and radar signals?
58367. Antenna used for T.V. broadcasting is
58368. For a rectangular waveguide (a x b, a > b) to support only the TE10 mode at wavelength which one of the following pairs of in equalities is to be satisfied?
58369. Give one word for the following: To pull the strings means:?
58370. Transverse electric (TE) waves have
58371. For infinite value of SWR on a transmission line, the line be terminated with impedance as
58372. An electromagnetic wave incident on a perfect conductor is
58373. A time varying magnetic field produces
58374. An open coil has
58375. Antenna used for direction finding is
58376. In E plane metal plate lens antenna
58377. The disturbance from adjacent telephone line is known as
58378. The boundary conditions at the interface between two dielectrics in an electric field are given by
58379. The curve representing Ohm's law is
58380. When a plane wave is incident normally from dielectric '1' (μ0, ε1) onto dielectric '2' (μ0, ε2) the electric field of the transmitted wave is 2 times the electric field of the reflected wave. The ratio ε2/ε1 is
58381. The electric intensity for free space is given by
58382. Which of following antenna not produces circular polarisation?
58383. Purpose of antenna is
58384. MF is generally used for
58385. The attenuation in waveguides near the cut off frequency is
58386. The ground waves eventually disappear as one moves away from the transmitter because of
58387. The radiation resistance of a rod tubing antenna is
58388. Power gain of an antenna in a given direction is the ratio of
58389. The secondary lobes in binomial arrays can be reduced by
58390. ------is a process-to-process protocol that adds only port addresses,checksum,error control and length information to the data from the upper layer:
58391. The maximum effective aperture of a microwave antenna which has a directivity of 900, will be
58392. For a wave propagating in air filled rectangular waveguide.
58393. Which of following antenna produces elliptical polarisation?
58394. End fire coupler is formed
58395. Antenna radiation efficiency can be increased by
58396. Divergence of curl A is
58397. The only Muslim woman to sit on the throne of Delhi was?
58398. If reflection coefficient is 1/5, then corresponding VSWR is given by
58399. The characteristic impedance is given by
58400. Surface integral of the electric field intensity is