SCE Engineering Sciences

Question 1

What is Newton's second law of motion?

Accepted Answer

F = ma (force equals mass times acceleration)

Answer

Every action has an equal and opposite reaction

Answer

An object at rest stays at rest

Answer

Energy cannot be created or destroyed

Question 2

The coefficient of thermal expansion is a measure of:

Accepted Answer

How much a material expands per degree of temperature change

Answer

The heat capacity of a material

Answer

The thermal conductivity of a material

Answer

The melting point of a material

Question 3

Hooke's Law states that stress is proportional to strain within the:

Accepted Answer

Elastic limit

Answer

Plastic region

Answer

Ultimate strength

Answer

Fracture point

Question 4

The first law of thermodynamics is a statement of:

Accepted Answer

Conservation of energy

Answer

Conservation of momentum

Answer

Conservation of mass

Answer

Entropy increase

Question 5

Young's modulus is defined as the ratio of:

Accepted Answer

Stress to strain in the elastic region

Answer

Force to displacement

Answer

Strain to stress

Answer

Load to area

Question 6

In fluid mechanics, Reynolds number determines:

Accepted Answer

Whether flow is laminar or turbulent

Answer

The fluid pressure

Answer

The fluid temperature

Answer

The fluid density