IndiaBIX

Electronics and Communication Engineering - Signals and Systems

Exercise : Signals and Systems - Section 3
11.
If i(t) is a time varying current, is
initial current
initial charge
initial flux leakages
initial voltage
Answer: Option
Explanation:

Intergal of current is charge.

12.
For the discrete time system of the given figure
yk = 0.5 uk - 2 - uk - 0.25 yk - 1
yk = 0.5 uk - 1 - uk - 0.25 yk - 1
yk = 0.5 uk - uk - 1 - 0.25 yk - 1
yk = 0.5 uk - 1 - uk - 1 - 0.25 yk - 1
Answer: Option
Explanation:

uk has two unit delays and a mltiplier of 0.5, yk has a unit delay and a muliplier of 0.25 .

13.
The signal is
periodic for t > 0
non-periodic
periodic for t < 0
depends on t
Answer: Option
Explanation:

To because Periodic such signal = rational number, where T1 and T2 is period of individual signal.

14.
In the state equation x = AX + Bu is a n x m matrix.
True
False
Answer: Option
Explanation:

A is n x n matrix.

15.
If the poles of H(z) are at
z = 1 and z = 3
z = -1 and z = -3
Answer: Option
Explanation:

.

Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers