FCTC FREE FCTC Test Mechanical Reasoning Principles Questions and Answers 2

Question 1

A hydraulic jack uses a small piston with an area of 2 sq in and a large piston with an area of 20 sq in.
If you apply 50 lbs of force to the small piston, how much force is exerted by the large piston?

Accepted Answer

500 lbs

Answer

250 lbs

Answer

100 lbs

Answer

1000 lbs

Question 2

Two gears are meshed together. Gear A has 12 teeth and Gear B has 36 teeth. If Gear A rotates at 90 RPM, how fast does Gear B rotate?

Accepted Answer

30 RPM

Answer

270 RPM

Answer

45 RPM

Answer

108 RPM

Question 3

A lever has its fulcrum 1 foot from a 300-lb load and 4 feet from where force is applied. How much effort force is needed to lift the load?

Accepted Answer

75 lbs

Answer

1200 lbs

Answer

150 lbs

Answer

300 lbs

Question 4

A pulley system has one fixed pulley and one movable pulley. What is the mechanical advantage of this system?

Accepted Answer

2

Answer

1

Answer

4

Answer

3

Question 5

Which type of simple machine is an inclined plane wrapped around a cylinder?

Accepted Answer

Screw

Answer

Wedge

Answer

Lever

Answer

Wheel and axle

Question 6

A wrench 12 inches long applies 20 lbs of force perpendicular to a bolt. What torque is applied to the bolt?

Accepted Answer

240 in-lbs

Answer

20 in-lbs

Answer

32 in-lbs

Answer

120 in-lbs