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Electronics and Communication Engineering - Exam Questions Papers

Exercise : Exam Questions Papers - Exam Paper 6
46.
The equivalent circuit for the following network is :
Answer: Option
Explanation:

47.

ωH =
108 rad/sec
104 rad/sec
102 rad/sec
10 rad/sec
Answer: Option
Explanation:

R = 10 || 10 = 5 KΩ

.

48.
The given characteristic polynomial s4 + s3 + 2s2 + 2s + 3 = 0 has
zero root in RHS of s-plane
one root in RHS of s-plane
two roots in RHS of s-plane
three roots in RHS of s-plane
Answer: Option
Explanation:

By Routh's Array

When ε -> 0, two sign changes in the first column, so there are two roots in RHS plane.

49.
In n-well CMOS fabrication substrate is:
heavily doped n-type
heavily doped p-type
lightly doped n-type
lightly doped p-type
Answer: Option
Explanation:

Lightly doped p-type.

50.
The transfer function of a zero-order-hold system is :
(l/s)(l + e-sT)
(1/s)(1 - e-sT)
1 - (l/s)e-sT
1 + (1/s)e-sT
Answer: Option
Explanation:

.

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