Question

A continuous signal is described by 15 sin( 100t + pi/2).

Its numerical value at t = 0 seconds is given by

A. 15.
B. pi/2.
C. 100.
D. 0.

Answer 1

Option A) 15

Explanation:

We are given the following in the question:

`15 \sin( 100t + (\pi)/(2))`

The above expression describes a continuous signal.

We have to find the numerical value at t = 0.

Putting t = 0, we get,

`\text{At t = 0}\\\\=15 \sin( 100(0) + \displaystyle(\pi)/(2))\\\\=15\sin(\pi)/(2)\\\\= 15`

Thus, the value of the signal is 15 at t = 0.

Option A) 15