BE/B Eng Bachelor of Engineering Mechanical Engineering 2

Question 1

What is the purpose of a Bourdon tube in engineering instruments?

Accepted Answer

To measure fluid pressure

Answer

A Bourdon tube is a curved metallic tube that straightens under internal pressure, with its deflection used to measure gauge pressure in fluid systems.

Question 2

In gear systems, the gear ratio is defined as the ratio of the number of teeth on the:

Accepted Answer

Driven gear to the driving gear

Answer

Gear ratio = teeth on driven gear / teeth on driving gear, and inversely equals the input-to-output speed ratio for a simple gear pair.

Question 3

Which heat transfer mechanism does not require a medium and can occur in a vacuum?

Accepted Answer

Radiation

Answer

Thermal radiation transfers energy via electromagnetic waves and requires no medium, making it the only mode that works through a vacuum.

Question 4

What is the function of a check valve in a hydraulic system?

Accepted Answer

To allow flow in only one direction

Answer

A check valve (non-return valve) permits fluid flow in one direction only and automatically prevents backflow when downstream pressure exceeds upstream pressure.

Question 5

In manufacturing, what does CNC stand for?

Accepted Answer

Computer Numerical Control

Answer

CNC (Computer Numerical Control) uses pre-programmed computer software to control the movement of machine tools like mills, lathes, and routers.

BE/B Eng Bachelor of Engineering Practice Test

BE/B Eng Bachelor of Engineering Practice Test

BE/B Eng Bachelor of Engineering Mechanical Engineering 2