Detection
Trending Questions
Q.
In the given detector circuit, the suitable value of carrier frequency is
- << 109 Hz
- None of these
- << 105 Hz
- >> 109 Hz
Q. A super heterodyne receiver is designed to receive transmitted signals between 5 and 10MHz. The tuning range of the local oscillate for IF frequency 600kHz for high-side tuning would be
- 5.6to10.6MHz
- 4.6to9.6MHz
- 4.6to10.6MHz
- 5.6to9.6MHz
Q.
Can an oscilloscope measure voltage?
Q. The carrier frequency generated by a tank circuit containing 1nF capacitor and 10μH inductor is:
- 1592Hz
- 1592MHz
- 1592kHz
- 159.2Hz
Q. In the given block diagram of a receiver, identify the boxes labelled as X and Y and write their functions.
![501263.jpg](https://search-static.byjusweb.com/question-images/toppr_ext/questions/501263.jpg)
![501263.jpg](https://search-static.byjusweb.com/question-images/toppr_ext/questions/501263.jpg)
Q. Given below is the circuit diagram of an AM demodulator
For good demodulation of AM signal of carrier frequency f, the value of RC should be
![431218.png](https://search-static.byjusweb.com/question-images/toppr_ext/questions/431218.png)
For good demodulation of AM signal of carrier frequency f, the value of RC should be
![431218.png](https://search-static.byjusweb.com/question-images/toppr_ext/questions/431218.png)
- RC=1/f
- RC≥1/f
- RC<1/f
- RC>>1/f
Q. In the following circuit, the frequency of A.C is increased then the value of the current flowing int he circuit will be:
![22656.png](https://search-static.byjusweb.com/question-images/toppr_ext/questions/22656.png)
![22656.png](https://search-static.byjusweb.com/question-images/toppr_ext/questions/22656.png)
- zero
- increases
- Infinity
- decreases
Q. 5 beats/second are heard when a tuning fork is sounded with sonometer wire under tension, when the length of the sonometer wire is either 0.95 m or 1 m. The frequency of the fork will be:
- 195 Hz
- 150 Hz
- 300 Hz
- 251 Hz