Bissoy.com
Doctors Medicines MCQs Q&A

A radio receiver operating at microwave frequencies must have very high selectivity.

A radio receiver operating at microwave frequencies must have very high selectivity. Correct Answer True

Today, most of the applications use wireless communication at microwave frequency. Hence space is a sea of EM waves. In order to receive only the desired signal in the desired range of frequencies, the radio receiver must have high sensitivity.

Related Questions

Which of the following statements are correct? 1. A lowpass filter passes low frequencies and stops high frequencies. 2. A highpass filter passes high frequencies and rejects low frequencies 3. A bandpass filter passes frequencies within a frequency band and attenuates frequencies outside the band. 4. A bandstop filter passes frequencies within the band and blocks/attenuates frequencies outside a frequency band.
The probability that a communication system will have high fidelity is 0.81. The probability that the system will have both high fidelity and high selectivity is 0.18. The probability that a given system with high fidelity will have high selectivity is
Microwave resonators are used in 1. Microwave oscillators 2. Microwave narrowband amplifiers 3. microwave frequency meters Which of the above are correct?
Assertion (A): A high electron mobility transistor is based upon modulation-doped (GaAs - AlGaAs) single heterojunction structure. Reason (R): HEMT shows a very high noise figure and very low gain at very high microwave frequencies up to 70 GHz.
A dealer bought a microwave and a geyser for Rs. 15000, and sold them earning a total profit of 22%, such that he sold the microwave at a profit of 20% after giving a discount of 10% on its marked price and the geyser at a profit of 25%. How much total profit percentage he would have earned, if he had sold the microwave at a discount of 15%?
Resistors used at normal operating frequencies can be directly used at microwave frequencies in MMIc.
Which of the following statements are correct with reference to superheterodyne receivers? (i) The main advantage of the superheterodyne receiver is its better tracking (ii) The main advantage of the superheterodyne receiver is an improvement in sensitivity (iii) The image channel rejection in superheterodyne receiver comes from IF stages only (iv) The image channel rejection in the superheterodyne receiver comes from the RF stage only Choose the correct answer from the code given below:
To constitute a matter of res judicata which of the following conditions must concur?
1. The matter directly and substantially in issue in the subsequent suit or issue must be the same matter which was directly and substantially in issue either actually (section 11, explanation III) or constructively (section 11, explanation IV) in the former suit
2. The former suit must have been a suit between the same parties under whom they or any of them claim. Explanation VI of Section 11 must be read with this condition
3. The parties as aforesaid must have litigated under the same title in the former suit
4. The court which decided the former suit must have been a court competent to try the subsequent suit of the suit in which such issue has been subsequently raised. Explanation II of section 11 is to be read with condition
5. The matter directly and substantially in issue in the subsequent suit must have been heard and finally decided by the court in the first suit. Explanation V of section 11 is to be read with this condition
The manager of a radio program is going to feature six vocalists--M,N,P,Q,R and S on her half hour radio show during the course of one week.She will feature one vocalist on the show each day from Monday through Saturday.The manager must schedule the vocalists for the show according to the following conditions: *M must be featured earlier in the week than R. *P must be featured on Tuesday. * Q must be featured on the day immediately before or immediately after the day on which N is featured. If S is to be featured on Friday,M must be featured on---
Among the five objects, Gas stove, Washing machine, Refrigerator, Inverter and Microwave oven: the Washing machine is twice as heavy as the Inverter; the Gas stove is one and half time as heavy as the Microwave oven; the Washing machine and Microwave oven together weigh as much as the Gas stove and Inverter together; the Refrigerator and Inverter together are one and half times as heavy as the Gas stove. Which is the heaviest among the five objects?