Understanding the SI Unit System

The video tutorial explains the concept of systems of units, highlighting the historical systems like FPS, CGS, and MKS. It then introduces the SI system, which is internationally accepted for scientific, technical, and commercial purposes. The SI system's advantages, such as ease of conversion and international standardization, are discussed. The video also covers the fundamental and supplementary quantities in the SI system, including units for length, mass, time, electric current, temperature, luminous intensity, and substance amount.

What does a system of units comprise?

• Neither fundamental nor derived units

• Both fundamental and derived units

• Only fundamental units

• Only derived units

Which of the following is NOT a historical system of units?

• FPS

• CGS

• MKS

• SI

In the FPS system, what is the unit of mass?

• Kilogram

• Gram

• Pound

• Foot

What is a key advantage of the SI system?

• It is based on historical units

• It simplifies international communication

• It uses the binary system for conversions

• It is only used in scientific work

Which of the following is a fundamental SI unit for electric current?

• Ampere

• Volt

• Watt

• Ohm

What is the SI unit for thermodynamic temperature?

• Celsius

• Rankine

• Kelvin

• Fahrenheit

Which of the following is a supplementary fundamental quantity in the SI system?

• Mass

• Electric current

• Plane angle

• Time

What is the SI unit for luminous intensity?

• Candela

• Watt

• Lumen

• Lux