Electronics and Communication Engineering - Communication Systems
Exercise : Communication Systems - Section 6
- Communication Systems - Section 13
- Communication Systems - Section 25
- Communication Systems - Section 24
- Communication Systems - Section 23
- Communication Systems - Section 22
- Communication Systems - Section 21
- Communication Systems - Section 20
- Communication Systems - Section 19
- Communication Systems - Section 18
- Communication Systems - Section 17
- Communication Systems - Section 16
- Communication Systems - Section 15
- Communication Systems - Section 14
- Communication Systems - Section 1
- Communication Systems - Section 12
- Communication Systems - Section 11
- Communication Systems - Section 10
- Communication Systems - Section 9
- Communication Systems - Section 8
- Communication Systems - Section 7
- Communication Systems - Section 6
- Communication Systems - Section 5
- Communication Systems - Section 4
- Communication Systems - Section 3
- Communication Systems - Section 2
46.
Which of the following amplifiers is used for impedance matching?
Answer: Option
Explanation:
CC connection has low output impedance and is suitable for impedance matching.
47.
Which of the following amplifiers has highest output impedance?
Answer: Option
Explanation:
CB connection has high output impedance and is used for radio frequency isolation.
48.
In a superheterodyne receiver, having no RF amplifier, the IF is 455 kHz. The image frequency at 1000 kHz is
Answer: Option
Explanation:
Image frequency = 1000 - 455 = 545 kHz.
49.
Audio tapes have two tracks each 2.5 mm wide.
Answer: Option
Explanation:
Deck is much superior to tape recorder.
50.
Which of the following amplifiers has a voltage gain of less than 1?
Answer: Option
Explanation:
CC circuit has voltage gain of less than 1 and is used for impedance matching.
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