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Electronics and Communication Engineering - Exam Questions Papers

Exercise : Exam Questions Papers - Exam Paper 20
26.
What will be equipotential surfaces for a pair of equal and opposite line charges?
Spheres
Concentric cylinders
Non-concentric cylinders
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
27.
With respect to the differential amplifier configuration shown below, the differential gain Ad will be

Rc = 4.7 KΩ
RE = 2.7 KΩ
hfe = 100
hie = 1 KΩ
RS = 100 Ω
273.63
213.63
113.63
233.63
Answer: Option
Explanation:

28.
A memory system of size 16 K bytes is required to be designed using memory chips having 12 address lines and 4 data lines-each. The number of such chips required to design and the memory system is :
2
4
8
16
Answer: Option
Explanation:
No answer description is available. Let's discuss.
29.
The measured transconductance gm of an NMOS transistor operating in the linear region is plotted against the gate voltage VG at constant drain voltage VD. Which of the following figures represents the expected dependance of gm on VG?
Answer: Option
Explanation:
No answer description is available. Let's discuss.
30.
In the graph shown in the figure, for the tree with branches b, d and f the fundamental loops would include c
abf, def, bdea
bdc, def, fba
abde, def, cdb
cea, bdea, abbf
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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