Exercise: Radio Receivers

Questions for: Radio Receivers

In a radio receiver, the local oscillator is tuned to a frequency
A:
lower than the incoming frequency
B:
higher than the incoming frequency
C:
equal to incoming frequency
D:
any of the above
Answer: B
No answer description is available. Let's discuss.
📖
📝
💬
👁️
Padders are used in a receiver to
A:
discard the carrier
B:
facilitate tracking
C:
filter the input signal
D:
suppress noise
Answer: B
No answer description is available. Let's discuss.
📖
📝
💬
👁️
FM amplifier in a superheterodyne receiver
A:
increases selectivity
B:
suppresses noise
C:
provides improved tracking
D:
improves the rejection of the image frequency
Answer: D
No answer description is available. Let's discuss.
📖
📝
💬
👁️
In a radio receiver, if the intermediate frequency is too low
A:
Image-frequency rejection will improve
B:
Selectivity will be too sharp
C:
The frequency selectivity of the local oscillator will have to be lowered
D:
All of the above
Answer: B
No answer description is available. Let's discuss.
📖
📝
💬
👁️
As compared to tuned radio frequency receivers which of the following is the advantage of using superheterodyne receivers?
A:
High gain and better sensitivity
B:
Better selectivity at high frequencies
C:
Stability
D:
Noise suppression
Answer: A
No answer description is available. Let's discuss.
📖
📝
💬
👁️
Ad Slot (Above Pagination)
Quiz