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Electronics and Communication Engineering - Exam Questions Papers

Exercise : Exam Questions Papers - Exam Paper 21
11.
Efficiency of general AM signal with em = E1 cos ω1t + E2 cos ω2t with modulation index m1 and m2 is __________ .
Answer: Option
Explanation:
No answer description is available. Let's discuss.
12.
Poynting vector is associated with
flux in magnetic field
power flow in electrostatic field
current in electrostatic field
charge in electrostatic field
Answer: Option
Explanation:
No answer description is available. Let's discuss.
13.
A random process x(t) is defined by x(t) = 2 cos (2pt + Y) where Y is a discrete random variable with
P(Y = 0) = and
Then Rxx (0, 1) =
1
2
Answer: Option
Explanation:
No answer description is available. Let's discuss.
14.
Consider points P and Q in the x-y plane, with P = (1, 0) and Q = (0, 1). The line integral 2 (xdx + ydy) along the semicircle with the line segment PQ as its diameter
is - 1
is 0
is 1
depends on the direction (clockwise or anti-clockwise) of the semicircle
Answer: Option
Explanation:
No answer description is available. Let's discuss.
15.
What are the counting stages (Q1, Q2) for the counter shown in the figure below?
11, 10, 00, 11, 10, ...
01, 10, 11, 00, 10, ...
00, 11, 01, 10, 00, ...
01, 10, 00, 01, 10, ...
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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