EC6304 Electronic Circuits 1 Important questions
EC6304 Electronic Circuits 1 Important questions Regulation 2013 Anna University free download. Electronic Circuits 1 Important questions EC6304 pdf free download.
Sample EC6304 Electronic Circuits 1 Important questions:
Part A 2 MARKS
1. Define noise
Noise is an unwanted electrical signal which gets added tom a transmitted signal
when it is travelling towards the receiver
2. Define noise figure (EC6304 Electronic Circuits 1 Important questions)
Noise figure is a figure of merit and used to indicate how much the signal to noise
ratio gets degraded as a signal passes through a series of circuits
3. What is meant by analog communication system?
The modulation systems or techniques in which one of the characteristics of the
carrier is changed in proportion with the instantaneous value of modulating signal
is called analog communication system.
4. Define modulation (EC6304 Electronic Circuits 1 Important questions)
Modulation is defined as changing the characteristics of the carrier signal with
respect to the instantaneous change in message signal.
5. What are the needs for modulation
In order to carry the low frequency message signal to a longer distance, the high
frequency carrier signal is combined with it.
a) Reduction in antenna height
b) Long distance communication
c) Ease of radiation
d) Multiplexing
e) Improve the quality of reception
f) Avoid mixing up of other signals
6. What are the advantages of Analog communications (EC6304 Electronic Circuits 1 Important questions)
Transmitters and Receivers are simple
Low bandwidth requirement FDM can be used
7. What are the disadvantages of analog communication?
Noise affects the signal quality
It is not possible to separate noise and signal
Repeaters can’t be used between transmitters and receivers
Coding is not possible
It is not suitable for the transmission of secret information (EC6304 Electronic Circuits 1 Important questions)
| Subject Name | Electronic Circuits 1 |
| Subject Code | EC6304 |
| Regulation | 2013 |
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