ASTB Mechanical UPDATED ACTUAL
Exam Questions and CORRECT Answers
Venturi Effect - CORRECT ANSWER - Reduction in fluid pressure that results when a fluid
flows through a constricted pipe (narrows)
Bernoulli's Principle - CORRECT ANSWER - As the speed of a moving fluid increases,
pressure within the fluid decreases
Total Pressure Formula - CORRECT ANSWER - Total Pressure = Dynamic Pressure + Static
Pressure
Boyle's Law - CORRECT ANSWER - If a gas remains at constant temperature, the volume is
inversely proportional to the pressure
What to the Pressure when a gas is compressed to half its original volume? - CORRECT
ANSWER - Pressure will double
Dynamic Pressure - CORRECT ANSWER - The pressure on a body from a fluid when the
fluid is moving (kinetic)
Static Pressure - CORRECT ANSWER - The pressure on a body from a fluid when the fluid is
at rest (potential)
Voltage Defined - CORRECT ANSWER - Electrical measurement of force
Current Defined - CORRECT ANSWER - Rate of an electrical current between circuits
Voltage Formula - CORRECT ANSWER - Voltage = Current x Resistance V = I x R
, Balloon - CORRECT ANSWER - Air pressure inside is greater than atmospheric pressure
outside
How are Density and Pressure related? - CORRECT ANSWER - Pressure is directly
proportional to density; if one rises, so does the other
Density Formula - CORRECT ANSWER - P = M/V
Particle Collisions Available Energy - CORRECT ANSWER - The available energy is the
energy used to produce new matter from the kinetic energy of colliding particles
Particle Collisions Momentum - CORRECT ANSWER - Due to conservation of momentum,
system of two particles with net momentum may not convert all their kinetic energy into mass,
resulting in an available energy that is always less than or equal to the kinetic energy of colliding
particles
Isothermal Energy - CORRECT ANSWER - Remains constant
Heat Transfer with conductivity - CORRECT ANSWER - Hot things expand and cold things
compress (water is exception)
Pendulum - would a wrecking ball take longer to swing at a higher or lower length - CORRECT
ANSWER - A lower length - the longer the rope the longer the swing
Pendulum - when does a pendulum have the most kinetic energy? - CORRECT ANSWER - At
the bottom of the swing
Pendulum - when does a pendulum have the most potential energy? - CORRECT ANSWER -
At the highest position of the swing
Mass is determined by - CORRECT ANSWER - Mass = Weight x Gravity
Exam Questions and CORRECT Answers
Venturi Effect - CORRECT ANSWER - Reduction in fluid pressure that results when a fluid
flows through a constricted pipe (narrows)
Bernoulli's Principle - CORRECT ANSWER - As the speed of a moving fluid increases,
pressure within the fluid decreases
Total Pressure Formula - CORRECT ANSWER - Total Pressure = Dynamic Pressure + Static
Pressure
Boyle's Law - CORRECT ANSWER - If a gas remains at constant temperature, the volume is
inversely proportional to the pressure
What to the Pressure when a gas is compressed to half its original volume? - CORRECT
ANSWER - Pressure will double
Dynamic Pressure - CORRECT ANSWER - The pressure on a body from a fluid when the
fluid is moving (kinetic)
Static Pressure - CORRECT ANSWER - The pressure on a body from a fluid when the fluid is
at rest (potential)
Voltage Defined - CORRECT ANSWER - Electrical measurement of force
Current Defined - CORRECT ANSWER - Rate of an electrical current between circuits
Voltage Formula - CORRECT ANSWER - Voltage = Current x Resistance V = I x R
, Balloon - CORRECT ANSWER - Air pressure inside is greater than atmospheric pressure
outside
How are Density and Pressure related? - CORRECT ANSWER - Pressure is directly
proportional to density; if one rises, so does the other
Density Formula - CORRECT ANSWER - P = M/V
Particle Collisions Available Energy - CORRECT ANSWER - The available energy is the
energy used to produce new matter from the kinetic energy of colliding particles
Particle Collisions Momentum - CORRECT ANSWER - Due to conservation of momentum,
system of two particles with net momentum may not convert all their kinetic energy into mass,
resulting in an available energy that is always less than or equal to the kinetic energy of colliding
particles
Isothermal Energy - CORRECT ANSWER - Remains constant
Heat Transfer with conductivity - CORRECT ANSWER - Hot things expand and cold things
compress (water is exception)
Pendulum - would a wrecking ball take longer to swing at a higher or lower length - CORRECT
ANSWER - A lower length - the longer the rope the longer the swing
Pendulum - when does a pendulum have the most kinetic energy? - CORRECT ANSWER - At
the bottom of the swing
Pendulum - when does a pendulum have the most potential energy? - CORRECT ANSWER -
At the highest position of the swing
Mass is determined by - CORRECT ANSWER - Mass = Weight x Gravity
