Experiment 5 - Linear Expansion

Question 1

A physical phenomenon that occurs when a material undergoes a change in temperature. It may occur as an expansion or contraction

Answer 1

Linear Deformation

Question 2

If the object has a:

positive temperature coefficient -> object will expand with increasing temp

negative temperature coefficient -> object will contract with increasing temp

Answer 2

Linear Expansion

Question 3

Equation to find the change in length

Answer 3

∆𝐿 = 𝛼𝐿∆𝑇

Question 3

Measure of how much a material will expand in one dimension for each degree Celsius/Kelvin increase in temperature

Answer 3

Coefficient of Linear Expansion

Question 3

Symbol that denotes the coefficient of linear expansion

Answer 3

𝛼

Question 4

The coefficient of linear expansion are ________

Answer 4

material dependent

Question 4

Materials in Linear Expansion Experiment

Answer 4

1. Linear Expansion Apparatus (Brass and Steel)
2. Steam Generator (with power cable)
3. Rubber Tubings

Question 5

Applications of Linear Expansion in Engineering Design

Answer 5

• Joints in Bridges and Buildings
• Railway Track
• Bimetallic Strips in Thermostats
• Engine Differential Expansions
• Electrical Wiring
• Instrument Temperature Compensation
• Thermometer
• Exhaust System in Automotives