Question: Circular polarization A. is useful in reducing depolarization effect on received wave B. involves critical alignment of transmitting and receiving antenna C. is useful in discrimination between reception of adjacent beams D. none of the above Answer» a. is…
Question: Which of the following is an indirect way of generating FM? A. armstrong modulator B. varactor diode modulator C. reactance fet modulator D. reactance bipolar transistor Answer» a. armstrong modulator Note: The above multiple-choice question is for all general…
Question: An FM radio receiver which is tuned to a 91.6 MHz broadcast station may receive an image frequency of __________ MHz. A. 102.3 B. 113 C. 70.2 D. 80.9 Answer» b. 113 Note: The above multiple-choice question is for…
Question: When the length of antenna is a whole wavelength A. the radiation at right angles is zero B. the radiation at right angles is maximum C. the radiation is zero in all directions D. the radiation is maximum in…