ECE :: Exam Questions Paper
-
Efficiency of general AM signal with em = E1 cos ω1t + E2 cos ω2t with modulation index m1 and m2 is __________ .
-
Poynting vector is associated with
-
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) = -
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 -
What are the counting stages (Q1, Q2) for the counter shown in the figure below?
-
Consider the transmission line of length 37.5 cm, which is terminated into zero resistance. This line is being exited by a source of 1 GHz which has an internal impedance of 50 Ω. What is the input impedance of the line as seen by the source?
-
The junction capacitance of a linearly graded pn junction (with applied voltage = VB) is proportional to
-
Consider the following statements:
For a square waveguide of cross-section 3m x 3m it has been found- At 6 GHz dominant mode will propagate
- At 4 GHz only dominant modes and evanescent
- At 11 GHz all the modes and no higher order mode will propagate
- At 7 GHz degenerate modes will propagate
-
The circuit shown depicts :
-
Which of the transistor models is most preferred for the analysis of a transistor circuit both at mid-band and at high frequencies?
Whatsapp
Facebook
