Mechanical Principles

What is the maximum permissible dimension for the shown shaft

• 105.5

• 105

• 104.5

• +- 0.5

In the shown image, how much is the tolerance

• 105.5

• 105

• 104.5

• +- 0.5

The cutting stroke when using hacksaw is

• The forward stroke

• The back ward stroke

What is the worker doing here

• Clean the file using wire brush

• Adjust the handle of the file

• Drilling operation

• Using chisel

What is the principle of conservation of energy in mechanical systems?

• Energy cannot be created or destroyed, only transformed.

• Energy can be created from nothing.

• Energy is always lost in mechanical systems.

• Energy is only conserved in closed systems.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which of the following is an example of Newton's Third Law of Motion?

• A car accelerating on a highway.

• A rocket launching into space.

• A book resting on a table.

• A ball thrown in the air.

Tags

NGSS.MS-PS2-1

What does the term 'mechanical advantage' refer to in simple machines?

• The ratio of output force to input force.

• The speed at which a machine operates.

• The energy efficiency of a machine.

• The total energy output of a machine.

In a lever system, what is the point called where the lever pivots?

• Fulcrum

• Load

• Effort

• Beam

What is the formula for calculating work done in a mechanical system?

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which of the following best describes kinetic energy?

• Energy stored in an object due to its position.

• Energy an object possesses due to its motion.

• Energy released during a chemical reaction.

• Energy stored in atomic nuclei.

Tags

NGSS.MS-PS3-1