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Electronics and Communication Engineering - Exam Questions Papers

Exercise : Exam Questions Papers - Exam Paper 13
41.
At room temperature, a possible value for the mobility of electrons in the inversion layer of a silicon n-channel MOSFET is
450 cm2/V-s
1350 cm2/V-s
1800 cm2/V-s
3600 cm2/V-s
Answer: Option
Explanation:
No answer description is available. Let's discuss.
42.
Which of the following networks represents a voltage shunt feedback?
Answer: Option
Explanation:
No answer description is available. Let's discuss.
43.
A series R-C circuit with R = 3 Ω and XC = 4 Ω at 50 Hz is supplied with a voltage V = 50 + 141.4 sin 314 t. What is the RMS value of the current flowing through the circuit?
5 A
10 A
20 A
22-36 A
Answer: Option
Explanation:
No answer description is available. Let's discuss.
44.
The amplitude of a random signal uniformly distributed between - 5 V and 5 V
If the signal to quantization noise ratio required in uniformly quantizing the signal is 4.5dB, the step size of the quantization is approximately
0.0333 V
0.05 V
0.0667 V
0.10 V
Answer: Option
Explanation:
No answer description is available. Let's discuss.
45.
In TV transmission the modulation schemes for video and audio are respectively
FM and AM
FM and FM
AM and FM
AM and AM
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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