Understanding the Vernier Caliper

This video tutorial by Professor Eduardo Stefanelli explains how to read and interpret measurements using a universal caliper with a millimeter scale and a resolution of five hundredths of a millimeter. The video covers the understanding of scales, reading measurements, significant figures, and refining measurements for accuracy. Practical examples are provided to enhance understanding.

What is the primary purpose of a vernier caliper?

• To measure electrical resistance

• To measure linear dimensions with high precision

• To measure temperature

• To measure weight

What does the main scale of a vernier caliper represent?

• The distance in inches

• The distance in meters

• The distance in kilometers

• The distance in centimeters and millimeters

How many divisions does the vernier scale have in the example provided?

• 25 divisions

• 10 divisions

• 15 divisions

• 20 divisions

What is a significant figure in the context of measurement?

• A figure that is always rounded

• A figure that is always estimated

• A figure that is always exact

• A figure that includes both exact and estimated digits

Why is the decimal part of a measurement considered uncertain?

• Because it is not visible

• Because it is based on estimation

• Because it is not used in calculations

• Because it is always incorrect

What does increasing the resolution of a measuring instrument do?

• Decreases the accuracy

• Decreases the cost of the instrument

• Increases the size of the instrument

• Increases the precision of the measurement

How is the vernier scale used to refine measurements?

• By aligning its marks with the main scale

• By adding random values

• By ignoring the main scale

• By using a calculator

What is the limitation of the vernier caliper in terms of precision?

• It cannot measure beyond centimeters

• It cannot be used in mechanical applications

• It cannot provide exact centesimal values

• It cannot measure large objects

In the practical example, what was the estimated measurement of the object?

• 40.00 mm

• 37.13 mm

• 39.20 mm

• 10.60 mm

What should be used for more precise centesimal measurements than a vernier caliper?

• A ruler

• A micrometer

• A thermometer

• A scale