which of following is true
a) physical quantities such as image and velocity can be measured by scalar sensors
b) scalar sensors produce output signal or voltage which is generally propotional to magnitude of quantity being measured.
c) digital sensors produce any value from 0 to10
d) displacement cannot be measure by anlog sensors.
Answers
Answer:
Option b is correct
Explanation:
Among the various options in question statement, option b is correct which states that “scalar sensors produce output signal or voltage which is generally proportional to magnitude of quantity being measured”. Scalar is a measure of a medium in terms of magnitude only. It does not take account of the direction of that medium at all. Examples are time, volume, temperature etc
The true statement is b) scalar sensors produce output signal or voltage which is generally proportional to magnitude of quantity being measured.
Explanation:
The image and the velocity have both magnitude and direction which is measured with vector sensor. The scalar sensor measures only the magnitude of the quantity.
The digital sensor detects only two possibility which is at 100% and at 0%.
The displacement gives the distance and direction the object moves, it can be measured by both digital and analog sensors.