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