FCTC Mechanical Reasoning Principles Questions and Answers 2

Question 1

If a first-class lever has the fulcrum positioned closer to the load than to the effort, what is the mechanical advantage?

Accepted Answer

Less than 1 — effort needed is greater than the load

Answer

Greater than 1 — effort needed is less than the load

Answer

Equal to 1 — no mechanical advantage

Answer

Cannot be determined without additional information

Question 2

Two gears are meshed together. Gear A has 40 teeth and Gear B has 10 teeth. If Gear A rotates at 100 RPM, at what speed does Gear B rotate?

Accepted Answer

400 RPM

Answer

25 RPM

Answer

100 RPM

Answer

200 RPM

Question 3

A block-and-tackle pulley system has 4 rope segments supporting the load. What is the mechanical advantage?

Accepted Answer

4

Answer

1

Answer

2

Answer

8

Question 4

Which screwdriver would provide the MOST torque when removing a rusted bolt?

Accepted Answer

A long-handled screwdriver

Answer

A short-handled screwdriver

Answer

A magnetic-tip screwdriver

Answer

A flat-head screwdriver regardless of handle length

Question 5

Water flows through a pipe that narrows from a 4-inch diameter to a 2-inch diameter. What happens to the water velocity?

Accepted Answer

It quadruples

Answer

It decreases by half

Answer

It remains the same

Answer

It doubles

Question 6

A hydraulic system applies 50 pounds of force on a piston with 2 square inches of area. What force is produced at a second piston with 20 square inches of area?

Accepted Answer

500 lbs

Answer

50 lbs

Answer

100 lbs

Answer

250 lbs