ASTB Mechanical Questions with Correct Answers for Specific Exam Mail supergrades12@gmail.com

1




ASTB Mechanical Questions with Correct
Answers for Specific Exam Mail

What is Charles's Law?

Ans: V1/T1 = V2/T2 (states how gases tend to expand when heated)



What is formula for linear speed?

Ans: linear speed = rotational speed * radius



What are non-ferrous metals?

Ans: Alloys or metals that do NOT contain any iron (e.g. copper is non-
ferrous)



What is it called when Plasma turns into Gas?

Ans: recombination (also deionization)



What is a diode?

Ans: An electrical device that allows current to flow through it in only one
direction.



Helical gears are defined by what feature?

Ans: Slanted teeth.



What is the mechanical advantage of a Wheel and Axle?




Pretest - Stuvia US

, 2


Ans: MA of wheel and axle = radius of wheel ➗ radius of axle



What is one of the formulas for Power?

Ans: P = V*I

P = V^2

or

P = I^2 * R

(Where P = power, V = voltage, and I = current)



What is the third law of thermodynamics?

Ans: The value of entropy is zero at absolute zero temperature.



What is Ohm's Law?

Ans: Current = Voltage/Resistance



What is an inductor?

Ans: An electrical component that stores current.

- uses relationship between electricity and magnetism to resist changes in
current

- they resist AC currents, but not DC



What is the first law of thermodynamics?

Ans: Energy cannot be created or destroyed



What is an alternator?




Pretest - Stuvia US