ExxonMobil Test Mechanical Aptitude

Question 1

In a simple pulley system with one fixed and one movable pulley, what effort is required to lift a 400 lb load?

Accepted Answer

200 lb

Answer

400 lb

Answer

100 lb

Answer

300 lb

Question 2

Which type of valve is BEST suited for completely stopping or allowing flow in a pipeline?

Accepted Answer

Gate valve

Answer

Globe valve

Answer

Ball valve

Answer

Check valve

Question 3

Gear A has 20 teeth and drives Gear B, which has 40 teeth. If Gear A rotates at 600 RPM, at what speed does Gear B rotate?

Accepted Answer

300 RPM

Answer

600 RPM

Answer

1200 RPM

Answer

150 RPM

Question 4

What is the purpose of a pressure relief valve in an ExxonMobil processing system?

Accepted Answer

To release excess pressure and prevent equipment failure

Answer

To increase system pressure automatically

Answer

To measure flow rate

Answer

To filter contaminants

Question 5

A lever has a fulcrum 2 feet from a 300 lb load. How far from the fulcrum must a 100 lb effort be applied to achieve balance?

Accepted Answer

6 feet

Answer

3 feet

Answer

4 feet

Answer

8 feet

Question 6

Which material is most commonly used for high-pressure pipelines in petrochemical facilities due to its strength and corrosion resistance?

Accepted Answer

Carbon steel

Answer

Aluminum

Answer

PVC

Answer

Copper