ASTB Mechanical UPDATED Exam
Questions and CORRECT Answers
What is Charles's Law? - CORRECT ANSWER - V1/T1 = V2/T2 (states how gases tend to
expand when heated)
What is formula for linear speed? - CORRECT ANSWER - linear speed = rotational speed *
radius
What are non-ferrous metals? - CORRECT ANSWER - Alloys or metals that do NOT contain
any iron (e.g. copper is non-ferrous)
What is it called when Plasma turns into Gas? - CORRECT ANSWER - recombination (also
deionization)
What is a diode? - CORRECT ANSWER - An electrical device that allows current to flow
through it in only one direction.
Helical gears are defined by what feature? - CORRECT ANSWER - Slanted teeth.
What is the mechanical advantage of a Wheel and Axle? - CORRECT ANSWER - MA of
wheel and axle = radius of wheel radius of axle
What is one of the formulas for Power? - CORRECT ANSWER - 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? - CORRECT ANSWER - The value of entropy is
zero at absolute zero temperature.
What is Ohm's Law? - CORRECT ANSWER - Current = Voltage/Resistance
What is an inductor? - CORRECT ANSWER - 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? - CORRECT ANSWER - Energy cannot be created
or destroyed
What is an alternator? - CORRECT ANSWER - An electrical generator that converts
mechanical energy into electrical energy in the form of an alternating current.
What is current calculated as? - CORRECT ANSWER - Current = charge / time
When asking for final velocity for a given distance, what formula should you use? - CORRECT
ANSWER - Vfinal^2 = Vinitial^2 + 2ad
What are the formulas for Fn and Fg? - CORRECT ANSWER - Fn = m*g*cos(theta)
Fg = m*g*sin(theta)
How much resistance does a superconductor have? - CORRECT ANSWER - Zero resistance
What is the formula for ∆y? - CORRECT ANSWER - ∆y = (Vf^2 - Vi^2) / 2a
What is the sum of numbers from 1 to 300? - CORRECT ANSWER - Sum = (n/2)*(a+b)
Questions and CORRECT Answers
What is Charles's Law? - CORRECT ANSWER - V1/T1 = V2/T2 (states how gases tend to
expand when heated)
What is formula for linear speed? - CORRECT ANSWER - linear speed = rotational speed *
radius
What are non-ferrous metals? - CORRECT ANSWER - Alloys or metals that do NOT contain
any iron (e.g. copper is non-ferrous)
What is it called when Plasma turns into Gas? - CORRECT ANSWER - recombination (also
deionization)
What is a diode? - CORRECT ANSWER - An electrical device that allows current to flow
through it in only one direction.
Helical gears are defined by what feature? - CORRECT ANSWER - Slanted teeth.
What is the mechanical advantage of a Wheel and Axle? - CORRECT ANSWER - MA of
wheel and axle = radius of wheel radius of axle
What is one of the formulas for Power? - CORRECT ANSWER - 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? - CORRECT ANSWER - The value of entropy is
zero at absolute zero temperature.
What is Ohm's Law? - CORRECT ANSWER - Current = Voltage/Resistance
What is an inductor? - CORRECT ANSWER - 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? - CORRECT ANSWER - Energy cannot be created
or destroyed
What is an alternator? - CORRECT ANSWER - An electrical generator that converts
mechanical energy into electrical energy in the form of an alternating current.
What is current calculated as? - CORRECT ANSWER - Current = charge / time
When asking for final velocity for a given distance, what formula should you use? - CORRECT
ANSWER - Vfinal^2 = Vinitial^2 + 2ad
What are the formulas for Fn and Fg? - CORRECT ANSWER - Fn = m*g*cos(theta)
Fg = m*g*sin(theta)
How much resistance does a superconductor have? - CORRECT ANSWER - Zero resistance
What is the formula for ∆y? - CORRECT ANSWER - ∆y = (Vf^2 - Vi^2) / 2a
What is the sum of numbers from 1 to 300? - CORRECT ANSWER - Sum = (n/2)*(a+b)
