Testing Specialized Technologies Flashcards

Which simple machine is represented by a doorknob turning a latch mechanism?

Answer: Wheel and axle

A doorknob is a wheel-and-axle device where turning the larger knob rotates the smaller axle to operate the latch.

On the CAST Reading for Information section, an inference question asks you to do what?

Answer: Draw a logical conclusion supported by the passage

Inference questions require reasoning to a conclusion that the passage implies but does not state directly.

If a hydraulic system has a small piston and a large piston, pushing the small piston produces what effect at the large piston?

Answer: Greater force over a shorter distance

Hydraulic systems multiply force, so the large piston exerts greater force but moves a shorter distance than the small piston.

In Graphic Arithmetic, if a tank holds 500 gallons and a gauge shows it is one-quarter full, how many gallons remain?

Answer: 125 gallons

One-quarter of 500 gallons equals 125 gallons remaining in the tank.

Which factor increases the friction between two surfaces in a mechanical system?

Answer: A rougher surface texture

A rougher surface texture increases friction, while smoothing, lubricating, or reducing pressing force decreases it.

On the CAST test, what is the best strategy for the Mechanical Concepts section if you are unsure of an answer?

Answer: Eliminate clearly wrong options, then choose the most likely

Since there is no penalty for guessing on the CAST, eliminating wrong choices and selecting the most plausible answer improves your odds.

A spring is compressed and then released. What type of energy is stored in the compressed spring?

Answer: Potential (elastic) energy

A compressed spring stores elastic potential energy that converts to kinetic energy when released.