Mechanical Systems

What type of gear would be most appropriate for transmitting motion between perpendicular shafts?

• Spur gear

• Helical gear

• Bevel gear

• Worm gear

What is the mechanical advantage of a pulley system with 4 supporting pulleys?

• 2

• 4

• 8

• 16

Which type of bearing is best suited for applications with heavy radial loads?

• Thrust bearing

• Ball bearing

• Roller bearing

• Needle bearing

What does the term "backlash" refer to in gear systems?

• A) The maximum torque a gear can transmit

• B) The clearance between mating gear teeth

• C) The friction between gears

• D) The material fatigue in gear teeth

What type of mechanical joint allows rotation in only one axis?

• A) Ball joint

• B) Hinge joint

• C) Universal joint

• D) Fixed joint

Which fastener type is most resistant to vibration loosening?

• Hex bolt with washer

• Machine screw

• Lock nut

• Set screw

In technical drawings, what does GD&T stand for?

• General Design & Technology

• Geometric Dimensioning & Tolerancing

• Graphical Detail & Tracking

• Global Design & Technical

What is the purpose of a key in a shaft-hub connection?

• To prevent axial movement

• To transmit torque

• To reduce vibration

• To increase shaft strength

What type of mechanical drive would be most appropriate for transmitting power between parallel shafts over a long distance?

• Gear drive

• Chain drive

• Belt drive

• Direct coupling

What is the primary purpose of lubrication in mechanical systems?

• To increase power output

• To reduce friction and wear

• To prevent electrical discharge

• To enhance appearance