Q. To study electromagnetic radiations from astronomical objects, radio astronomers use

View solution

Q. Radar reciever has high sensitivity and low noise figure

View solution

Q. For a waveguide, which of the following statements is wrong?

View solution

Q. A circular waveguide has an infinite set of TE and TM modes.

View solution

Q. In TE and TM modes of rectangular waveguides having propagation in z direction

View solution

Q. The manufacturing technique used to manufacture strip type transmission line is

View solution

Q. An electromagnetic wave can be completely guided by a dielectric rod or slab.

View solution

Q. A transmission line discontinuity is defined as any interruption in the uniformity of the line.

View solution

Q. Interference generated by electrical equipment and automobile ignition systems when observed closed to earth is

View solution

Q. The earliest uses of electromagnetic waves were

View solution

Q. At millimeter wavelength the favoured mode in circular wave guide is

View solution

Q. In laboratory experiment the output from reflex klystron is moderated by square wave because

View solution

Q. In microwave detector used in laboratory measurements of relative power levels, standing wave ratio is about

View solution

Q. Microwaves

View solution

Q. In microstrip line has dielectric material most commonly used is

View solution

Q. In fibre optics the use is made of thin glass fibres for efficient transmission of light.

View solution

Q. Fields are said to be circularly polarized if

View solution

Q. Most electromagnetic transmission in rectangular wave-guide uses

View solution

Q. Loading of a line means

View solution

Q. The frequency of oscillations obtained from a reflex klystron depends mainly on

View solution