6. Three point tracking is achieved with which of the following ?
(a) Double conversion
(b) Double Spotting
(c) Variable selectivity
(d) The podder capacitor
7. …. Modulator is an indirect way of generating FM.
(a) Reactance FET
(b) Varactor FET
(c) Armstrong
(d) Reactance bipolar transistor
8. If the output power of radio receiver is doubled, the volume is increased by…….
(a) – 3 dB
(b) 1 dB
(c) 2 dB
(d) 3 dB
9. The most common device used for detection in radio receives is a/an :
(a) Transistor
(b) Diode
(c) Amplifiers
(d) Triode
10. Receiver having poor if selectivity will have poor :
(a) Sensitivity
(b) Blocking
(c) Diverse reception
(d) All of the above
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AM and FM Receivers » Exercise - 1 11. In a superheat receiver high intermediate frequency : (a) Improves selectivity (b) Increases tracking (c) Reduces adjacent-channel rejection (d) None of the above- AM and FM Receivers » Exercise - 13. High intermediate frequency in a superheat receiver : (a) improves selectivity (b) Increases tracking problems (c) Reduces adjacent channel rejection (d) All of the above
- AM and FM Receivers » Exercise - 1 12. Which of the following should be used to prevent overloading of the last 1 F amplifier in a receiver ? (a) Double conversion (b) Variable sensitivity (c) Variable selectivity (d) Squelch
- AM and FM Receivers » Exercise - 18. If the output power of radio receiver is doubled, the volume is increased by ....... (a) – 3 dB (b) 1 dB (c) 2 dB (d) 3 dB
- AM and FM Receivers » Exercise - 15. Most of the amplification of the received signal is obtained in a super heterodyne receiver from the ……. Stage. (a) IF (b) RF (c) Power amplifier (d) None of the above