Electronics and Communication Engineering - Radio Receivers

Exercise : Radio Receivers - Section 2
11.
A receiver having an RF amplifier and an IF of 450 kHz, has Q of the coils 65 and an incoming frequency of 1200 kHz. The image rejection of the receiver is
5870
3655
236
13.3
Answer: Option
Explanation:
No answer description is available. Let's discuss.

12.
A padder is basically a/an
insulator
variable resistor
capacitor
inductor
Answer: Option
Explanation:
No answer description is available. Let's discuss.

13.
In a radio receiver, the local oscillator is always tuned to a frequency higher than the incoming frequency to
facilitate tracking
allow permit adequate frequency coverage without switching
facilitate image frequency rejection
all of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.

14.
When a superheterodyne receiver is tuned to 455 kHz, its local oscillator provides a mixer with the input at 1010 kHz. The image frequency is
555 kHz
1010 kHz
1465 kHz
1920 kHz
Answer: Option
Explanation:
No answer description is available. Let's discuss.

15.
In a broadcast superheterodynes receiver having no RF amplifier, the loaded Q of the antenna coupling circuit is 100. If the intermediate frequency is 455 kHz. The image frequency at 1000 kHz will be
1010 kHz
1455 kHz
1910 kHz
545 kHz
Answer: Option
Explanation:
No answer description is available. Let's discuss.