BASIC PHYSICS

29問 • 1年前

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問題一覧

Which statement concerning heat and/or temperature is true?

Temperature is a measure of the kinetic energy of the molecules of any substance

The boiling point of a given liquid varies

Directly with pressure

a double acting actuating cylinder in a 3000 psi system has a piston with a surface rea of three square inches on the extension side, and a rod with a cross-section area of one square inch attached to the piston on the other side, approximately how much force will the actuator be able to produce when retracting?

6,000 pounds

Which is the ratio of the water vapor actually present in the atmosphere to the amount that would be present if the air were saturated at the prevailing temperature and pressure

Relative humidity

An airplane wing is designed to produce lift resulting from

Positive air pressure below the wing’s surface and negative air pressure above the wing’s surface along with the downward deflection of air.

If the volume of a confined gas is doubled (without the addition of more gas), the pressure will (assume the temperature remains constant)

Be reduced to one half its original value

If all or a significant part of a stall strip is missing on an airplane wing, a likely result will be.

Asymmetrical lateral control at a near stall angles of attack

If the temperature of a confined liquid is held constant and its pressure is tripled, the volume will

Remain the same

Which atmospheric conditions will cause the true landing speed of an aircraft to be the greatest?

High temperature with high humidity

Which of the following is newton’s first law of motion, generally termed the law of inertia

Everybody persists in its state of rest, or of motion in a straight line, unless acted upon by some force.

Which of the following is NOT considered a method of heat transfer?

Diffusion

Which will weigh the least?

35 parts of dry air and 65 parts of water vapor

Aspect ratio of a wing is defined as the ratio of the

Wingspan to the mean chord

Under which conditions will the rate of flow of a liquid through a metering orifice (or jet) be the greatest (all other factors being equal)?

Unmetered pressure, 17 PSI; metered pressure, 5 PSI; atmospheric pressure, 14.7 PSI

Which condition is actual amount of water vapor in a mixture of air and water?

Absolute humidity

In physics, which of the following factors are necessary to determine power? 1. Force exerted 2. Distance moved 3. Time required

1,2 and 3

The speed of sound in the atmosphere is most affected by variations in which of the following?

Ambient temperature

The desire effect of using winglets on an aircraft’s wingtips is to

Increase the lift to drag ratio

If the fluid pressure is 800 psi in a ½ inch line supplying an actuating cylinder with a piston area of 10 square inches, the force exerted on the piston will be

8000 pounds

Temperature is a measure of the potential If both the volume and the absolute temperature of a confined gas are doubled, the pressure will

Not change

The purpose of stall strips on airplane wings is to

Ensure that the wing root areas stall first

A wing with very high aspect ratio (in comparison with low aspect ratio wing) will have.

A low stall speed

How much work input is required to lower (not drop) a 120 pound weight from the top of a 3 foot table to the floor.

360 foot-pounds

What force must be applied to roll a 120 pound barrel up an inclined plane 9 feet long to a height of 3 feet (disregard friction)? L ÷ I = R ÷ E L = length of ramp, measured along the slope I = height of ramp R = weight of object to be raised or lowered. E = Force required to raise or lower object

40 pounds

The temperature to which humid air must be cooled at constant pressure to become saturated is called

Dew point

What is absolute humidity?

The actual amount of the water vapor in a mixture of air and water.

The purpose of aircraft wing dihedral is to

Increase lateral stability

The speed of sound in the atmosphere

Changes with a change in temperature

An engine that weighs 350 pounds is removed from an aircraft by means of a mobile hoist. The engine is raised 3 feet above its attachment mount, and the entire assembly is then moved forward 12 feet. Constant force of 70 pounds is required to move the loaded hoist. What is the total work input required to move the hoist?

840 foot pounds

airlaw

airlaw

pcar & afcar

pcar & afcar

new set

new set

human factor

human factor

human factor 2

human factor 2

Engine instrument system

ユーザ名非公開 · 54問 · 1年前

Engine instrument system

Propellers

Propellers

Propellers (2)

Propellers (2)

Induction and engine airflow system

ユーザ名非公開 · 42問 · 1年前

Induction and engine airflow system

42問 • 1年前

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Ignition starting system

ユーザ名非公開 · 100問 · 1年前

Ignition starting system

100問 • 1年前

ユーザ名非公開

Ignition starting system (2)

ユーザ名非公開 · 29問 · 1年前

Ignition starting system (2)

Auxiliary power unit

Auxiliary power unit

Reciprocating engines

ユーザ名非公開 · 100問 · 1年前

Reciprocating engines

Turbine engines

Turbine engines

Turbine engines (2)

Turbine engines (2)

Fuel metering systems

ユーザ名非公開 · 98問 · 1年前

Fuel metering systems

98問 • 1年前

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Aircraft landing gear system

ユーザ名非公開 · 79問 · 1年前

Aircraft landing gear system

79問 • 1年前

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Sheetmetal & Non sheetmetalic structure

ユーザ名非公開 · 100問 · 1年前

Sheetmetal & Non sheetmetalic structure

100問 • 1年前

ユーザ名非公開

Sheetmetal and non sheetmetalic structure

ユーザ名非公開 · 30問 · 1年前

Sheetmetal and non sheetmetalic structure

Aircraft fuel system

Aircraft fuel system

問題一覧

Which statement concerning heat and/or temperature is true?

Temperature is a measure of the kinetic energy of the molecules of any substance

The boiling point of a given liquid varies

Directly with pressure

6,000 pounds

Which is the ratio of the water vapor actually present in the atmosphere to the amount that would be present if the air were saturated at the prevailing temperature and pressure

Relative humidity

An airplane wing is designed to produce lift resulting from

Positive air pressure below the wing’s surface and negative air pressure above the wing’s surface along with the downward deflection of air.

If the volume of a confined gas is doubled (without the addition of more gas), the pressure will (assume the temperature remains constant)

Be reduced to one half its original value

If all or a significant part of a stall strip is missing on an airplane wing, a likely result will be.

Asymmetrical lateral control at a near stall angles of attack

If the temperature of a confined liquid is held constant and its pressure is tripled, the volume will

Remain the same

Which atmospheric conditions will cause the true landing speed of an aircraft to be the greatest?

High temperature with high humidity

Which of the following is newton’s first law of motion, generally termed the law of inertia

Everybody persists in its state of rest, or of motion in a straight line, unless acted upon by some force.

Which of the following is NOT considered a method of heat transfer?

Diffusion

Which will weigh the least?

35 parts of dry air and 65 parts of water vapor

Aspect ratio of a wing is defined as the ratio of the

Wingspan to the mean chord

Under which conditions will the rate of flow of a liquid through a metering orifice (or jet) be the greatest (all other factors being equal)?

Unmetered pressure, 17 PSI; metered pressure, 5 PSI; atmospheric pressure, 14.7 PSI

Which condition is actual amount of water vapor in a mixture of air and water?

Absolute humidity

In physics, which of the following factors are necessary to determine power? 1. Force exerted 2. Distance moved 3. Time required

1,2 and 3

The speed of sound in the atmosphere is most affected by variations in which of the following?

Ambient temperature

The desire effect of using winglets on an aircraft’s wingtips is to

Increase the lift to drag ratio

If the fluid pressure is 800 psi in a ½ inch line supplying an actuating cylinder with a piston area of 10 square inches, the force exerted on the piston will be

8000 pounds

Temperature is a measure of the potential If both the volume and the absolute temperature of a confined gas are doubled, the pressure will

Not change

The purpose of stall strips on airplane wings is to

Ensure that the wing root areas stall first

A wing with very high aspect ratio (in comparison with low aspect ratio wing) will have.

A low stall speed

How much work input is required to lower (not drop) a 120 pound weight from the top of a 3 foot table to the floor.

360 foot-pounds

40 pounds

The temperature to which humid air must be cooled at constant pressure to become saturated is called

Dew point

What is absolute humidity?

The actual amount of the water vapor in a mixture of air and water.

The purpose of aircraft wing dihedral is to

Increase lateral stability

The speed of sound in the atmosphere

Changes with a change in temperature

840 foot pounds