OAR Study Guide 1 (Mechanical
Comp)
Is it true that your gravity is the same on earth as it is on the moon? - answer Your
gravity on earth is the same on the moon.
What happens when you fire a bullet and drop a bullet at the same time? - answer A
bullet being shot, and a bullet being dropped will both hit the ground at the same time.
At what point does the pendulum have the most kinetic energy? - answer At its lowest
point.
Would a pendulum with a longer string or a shorter string take a longer distance to
complete a swing? - answerThe pendulum with the longer string.
If two pendulums with different weights but same string length, which one would swing
faster? - answerThe weight wouldn't mater only the string length and it's equal same so
they will swing at the same speed.
Bernoulli's Principle states that low velocity over a plane wing means? - answerLess lift
from the ground.
What happens when you decrease the pressure on a gas? - answerYou decrease the
volume.
According to Bernoulli's principle a jet flying faster will have higher or lower lift on its
wings? - answerHigher.
What is a Pulley? - answerA machine that uses turning wheels and rope to lift an object,
which in return gives you a mechanical advantage.
A pot of water is burning on the stove and the temperature of the burner is increasing
what happens to the water temperature? - answerThe water at the bottom of the pot
would be the hottest and lightest which would form bubbles, and the water at the top
would be less hot.
What is the purpose of a helicopters tail rotor? - answerTo counter the torque produced
by the main rotor.
What is the vertical section of a ship called? - answerBulkhead.
, Snap shots of an aircraft doing loop de loops, now where would the G force be the
greatest? - answerGoing in and out of the loop de loop.
What is the relationship between buoyancy and temperature? - answerTemperature
affects density. As temperature increases, density of a material goes down, which
caused buoyancy to increase.
What is the change in acceleration for a constant force on a horizontal plane with
negligible force? - answerAcceleration is constant so change in acceleration is zero.
What happens when you kick a football in its center of gravity? - answerIt does not
tumble or roll.
What does a control rod do in a Nuclear reactor? - answerIf you insert the control rod it
slows the reactor down, and if you take the control rod out it speeds it up.
What is denser and ice cube or the water its placed in? - answerThe water is denser
because it stays in a linear bonding form.
What happens when your hand touches a street pole? - answerConduction, heat
transfers from the hotter object to the colder object until both are equal.
If the flywheel of a space probe turns clockwise does the rest of the probe turn the same
direction, not at all, or in the opposite direction? - answerIt would move in the opposite
direction.
Which track would be better for someone when upside down? An oval track or a circle
track? - answerThe oval track would be better because it experiences negative g force
when hanging upside down.
What are different names of an inductor symbol from basic circuit diagram? -
answerCoils, Chokes, or Reactors.
What is the Leaden Frost Effect? - answerBeing able to sprinkle tap water on your
finger and dipping it in molten hot medal and not getting burned. This is due to the
stream forming a protective membrane around your finger.
How many times per second does an AC current of 60 HZ Change direction? -
answer120.
Which measurement of temperature has the highest temperature? - answerKelvin.
Where does AC power come from? - answerThe rotation of a magnetic field around a
coil wire.
What is the role of water in a power plant? - answerTo help cool the plant down.
Comp)
Is it true that your gravity is the same on earth as it is on the moon? - answer Your
gravity on earth is the same on the moon.
What happens when you fire a bullet and drop a bullet at the same time? - answer A
bullet being shot, and a bullet being dropped will both hit the ground at the same time.
At what point does the pendulum have the most kinetic energy? - answer At its lowest
point.
Would a pendulum with a longer string or a shorter string take a longer distance to
complete a swing? - answerThe pendulum with the longer string.
If two pendulums with different weights but same string length, which one would swing
faster? - answerThe weight wouldn't mater only the string length and it's equal same so
they will swing at the same speed.
Bernoulli's Principle states that low velocity over a plane wing means? - answerLess lift
from the ground.
What happens when you decrease the pressure on a gas? - answerYou decrease the
volume.
According to Bernoulli's principle a jet flying faster will have higher or lower lift on its
wings? - answerHigher.
What is a Pulley? - answerA machine that uses turning wheels and rope to lift an object,
which in return gives you a mechanical advantage.
A pot of water is burning on the stove and the temperature of the burner is increasing
what happens to the water temperature? - answerThe water at the bottom of the pot
would be the hottest and lightest which would form bubbles, and the water at the top
would be less hot.
What is the purpose of a helicopters tail rotor? - answerTo counter the torque produced
by the main rotor.
What is the vertical section of a ship called? - answerBulkhead.
, Snap shots of an aircraft doing loop de loops, now where would the G force be the
greatest? - answerGoing in and out of the loop de loop.
What is the relationship between buoyancy and temperature? - answerTemperature
affects density. As temperature increases, density of a material goes down, which
caused buoyancy to increase.
What is the change in acceleration for a constant force on a horizontal plane with
negligible force? - answerAcceleration is constant so change in acceleration is zero.
What happens when you kick a football in its center of gravity? - answerIt does not
tumble or roll.
What does a control rod do in a Nuclear reactor? - answerIf you insert the control rod it
slows the reactor down, and if you take the control rod out it speeds it up.
What is denser and ice cube or the water its placed in? - answerThe water is denser
because it stays in a linear bonding form.
What happens when your hand touches a street pole? - answerConduction, heat
transfers from the hotter object to the colder object until both are equal.
If the flywheel of a space probe turns clockwise does the rest of the probe turn the same
direction, not at all, or in the opposite direction? - answerIt would move in the opposite
direction.
Which track would be better for someone when upside down? An oval track or a circle
track? - answerThe oval track would be better because it experiences negative g force
when hanging upside down.
What are different names of an inductor symbol from basic circuit diagram? -
answerCoils, Chokes, or Reactors.
What is the Leaden Frost Effect? - answerBeing able to sprinkle tap water on your
finger and dipping it in molten hot medal and not getting burned. This is due to the
stream forming a protective membrane around your finger.
How many times per second does an AC current of 60 HZ Change direction? -
answer120.
Which measurement of temperature has the highest temperature? - answerKelvin.
Where does AC power come from? - answerThe rotation of a magnetic field around a
coil wire.
What is the role of water in a power plant? - answerTo help cool the plant down.
