M

Mr. Dubey • 52.30K Points
Coach 

Q. The members of the antenna family which are made of wires of certain value in terms of operating wavelength are called:

(A) loop antennas
(B) wire antennas
(C) dipole antenna
(D) slot antennas
Correct : Option (C)

Explanation: 
 wires of half wavelength are termed as dipoles. their radiation resistance is about 73 Ω. if only half of this length is used, then it is called quarter-wave monopole with a radiation resistance of 36.5 Ω.

Share

Discusssion

Login to discuss.

Loading Comments....

Related MCQs

Q. The output of a feedback control system must be a function of

Q. A source follower using an FET usually has a voltage gain which is

Q. In closed loop control system, with positive value of feedback gain the overall gain of the system will

Q. In case of type-1 system steady state acceleration is

Q. The bedding on a cable consists of

Q. In an open loop control system

Q. The insulating material for cables should

Q. A system has poles at 0.01 Hz, 1 Hz and 80Hz, zeroes at 5Hz, 100Hz and 200Hz. The approximate phase of the system response at 20 Hz is :

Q. Addition of zero at origin:

Q. Eddy currents are induced in the pole shoes of a D.C. machine due to