Related Unit and Fractions MCQ with Answers
Fundamental and derived
Fundamental and derived units are the two classifications of system of units.
Fundamental Quantities: The physical quantities that do not depend upon the other quantities are the fundamental quantities.
Derived Quantities: The physical quantities that depend upon the fundamental quantities are known as the derived quantities.
![What are the two classifications of system of units?](https://mcqfinder.in/uploads/images/objective-questions/wcs-set-1-unit-and-fractions/wcs-set-1-unit-and-fractions-id-1-e.jpg)
Length, Mass, Time
The measurement of physical quantities is one of the most important operations in engineering. Every quantity is measured in terms of some arbitrary, but internationally accepted units, called fundamental units.
All physical quantities, met within this subject, are expressed in terms of the following three fundamental quantities :
1. Length (L or l ),
2. Mass (M or m), and
3. Time (t).
![What are fundamental units?](https://mcqfinder.in/uploads/images/objective-questions/wcs-set-1-unit-and-fractions/wcs-set-1-unit-and-fractions-id-2-e.jpg)
Meter
MKS is the system of units based on measuring lengths in meters, mass in kilograms, and time in seconds.
![What denotes letter M in MKS system?](https://mcqfinder.in/uploads/images/objective-questions/wcs-set-1-unit-and-fractions/wcs-set-1-unit-and-fractions-id-3-e.jpg)
25.4 mm
25.4 millimetres are there in 1 inch.
![How many millimetres are there in 1 inch?](https://mcqfinder.in/uploads/images/objective-questions/wcs-set-1-unit-and-fractions/wcs-set-1-unit-and-fractions-id-4-e.jpg)