Question 1

Pascal's law is one of the fundamental physics principles behind the operation of an automatic transmission.

Accepted Answer

Pascal's law states that pressure applied to a fluid in a closed container is transmitted equally throughout the fluid. This principle is used in automatic transmissions to transmit power from the engine to the wheels.

Question 2

Before we can calculate the amount of force created with a piston, which of the following do we need to know?

Accepted Answer

To calculate the force created by a piston, you need to know the area of the piston and the pressure applied to it. The force is calculated using the formula: Force = Pressure x Area.

Question 3

Simply put, Pascal's law states that if we place fluid in a confined space, pressure will be transferred equally, in all directions inside that space.

Accepted Answer

Pascal's law states that in a confined fluid at rest, any change in pressure applied at any point in the fluid is transmitted undiminished throughout the fluid in all directions.

Question 4

Which of the following is the formula to calculate the area of a circle?

Accepted Answer

The formula to calculate the area of a circle is ∏r2, where ∏ is a mathematical constant approximately equal to 3.14, and r is the radius of the circle.

Question 5

A mechanical pressure control regulator valve is a simple mechanism that uses a spring and a ______ to dump excess fluid back to the transmission pan.

Accepted Answer

The answer of A mechanical pressure control regulator valve is...

Question 6

_______ law is one of the fundamental physics principles behind the operation of an automatic transmission.

Accepted Answer

Pascal's law is fundamental in the operation of hydraulic systems, which are essential in automatic transmissions.

Question 7

Pascal's law states that if we place fluid in a confined space, such as a transmission hydraulic system, ______ will be transferred ______ in all directions inside the space.

Accepted Answer

Pascal's law states that pressure applied to a confined fluid is transmitted undiminished in all directions throughout the fluid.

Question 8

We are also able to multiply ______ using Pascal's law.

Accepted Answer

The answer of We are also able to multiply ______...

Question 9

If a pressure of 100 psi (689 kPis applied to a piston with a surface area of 3 square inches, what would be the resulting force?

Accepted Answer

The force exerted by a pressure on a surface is calculated by multiplying the pressure by the area. Here, 100 psi * 3 square inches = 300 pounds.

Question 10

Before we can calculate the amount of force created by a piston, we must calculate the ______ of the piston.

Accepted Answer

The force created by a piston is calculated using the formula F = P * A, where F is the force, P is the pressure, and A is the area of the piston.

Question 11

Technician A states that when calculating the amount of force created by a piston, it is classified as a circle. Technician B states that to calculate the area of a circle, we need to use the formula (∏ × r). Who is correct?

Accepted Answer

The piston is circular, so Technician A is correct. Technician B is incorrect because the formula for the area of a circle is ∏ × r², not ∏ × r.

Question 12

The force created by a piston depends:

Accepted Answer

The force created by a piston is determined by the formula F = P * A, where F is the force, P is the hydraulic pressure, and A is the area of the piston. Therefore, it depends on both the area of the piston and the hydraulic pressure.

Question 13

175 psi (1207 kPis applied to a clutch piston with a radius of 3" (6" diameter). What is the total clamping force?

Accepted Answer

The clamping force can be calculated using the formula: Force = Pressure x Area. The area of the piston is πr², where r is the radius. For a radius of 3 inches, the area is π(3)² = 28.27 in². The force is then 175 psi x 28.27 in² = 4947.25 lb, which rounds to approximately 4900 lb.

Question 14

Technician A says that hydraulic pressure is the same in all directions within a closed container. Technician B says that one benefit of using hydraulic pressure is that it is not affected by leaks in the system. Who is correct?

Accepted Answer

Technician A is correct because, according to Pascal's Law, hydraulic pressure is transmitted equally in all directions within a closed system. Technician B is incorrect because leaks in a hydraulic system can lead to a loss of pressure and system inefficiency.

Question 15

Technician A says that increasing the transmission fluid level from the add mark to the full mark will require a quart of fluid, just like with engine oil. Technician B says says that increasing the transmission fluid level from the add mark to the full mark will require a pint of fluid. Who is correct?

Accepted Answer

Transmission fluid systems typically require a pint of fluid to go from the add mark to the full mark, unlike engine oil systems which often require a quart.

Question 16

Technician A says that the torque converter hub drives the front pump in an automatic transmission. Technician B says that the turbine shaft drives the front pump. Who is correct?

Accepted Answer

The torque converter hub is connected to the engine and drives the front pump in an automatic transmission, not the turbine shaft.

Question 17

Technician A says that governor pressure is controlled by torque converter rpm. Technician B says that governor pressure is controlled by output shaft speed. Who is correct?

Accepted Answer

Governor pressure in an automatic transmission is controlled by the output shaft speed, not by the torque converter rpm.

Question 18

Before we can calculate the amount of force created with a piston, which of the following do we need to know?

Accepted Answer

To calculate the force created by a piston, you need to know the pressure applied and the area of the piston, as force is calculated using the formula: Force = Pressure x Area.

Question 19

Which of the following additives control how temperature affects transmission fluid?

Accepted Answer

Viscosity modifiers are additives that help maintain the fluid's viscosity across a range of temperatures, ensuring proper transmission performance.

Question 20

Which of the following is not part of an automatic transmission hydraulic system?

Accepted Answer

A vacuum gauge is not part of an automatic transmission hydraulic system.

Quiz 8: Hydraulic Fundamentals

Pascal's law is one of the fundamental physics principles behind the operation of an automatic transmission.

Before we can calculate the amount of force created with a piston, which of the following do we need to know?

Simply put, Pascal's law states that if we place fluid in a confined space, pressure will be transferred equally, in all directions inside that space.

Which of the following is the formula to calculate the area of a circle?

A mechanical pressure control regulator valve is a simple mechanism that uses a spring and a ______ to dump excess fluid back to the transmission pan.

_______ law is one of the fundamental physics principles behind the operation of an automatic transmission.

Pascal's law states that if we place fluid in a confined space, such as a transmission hydraulic system, will be transferred in all directions inside the space.

We are also able to multiply ______ using Pascal's law.

If a pressure of 100 psi (689 kPis applied to a piston with a surface area of 3 square inches, what would be the resulting force?

Before we can calculate the amount of force created by a piston, we must calculate the ______ of the piston.

Technician A states that when calculating the amount of force created by a piston, it is classified as a circle. Technician B states that to calculate the area of a circle, we need to use the formula (∏ × r) . Who is correct?

The force created by a piston depends:

175 psi (1207 kPis applied to a clutch piston with a radius of 3" (6" diameter) . What is the total clamping force?

Technician A says that hydraulic pressure is the same in all directions within a closed container. Technician B says that one benefit of using hydraulic pressure is that it is not affected by leaks in the system. Who is correct?

Technician A says that the torque converter hub drives the front pump in an automatic transmission. Technician B says that the turbine shaft drives the front pump. Who is correct?

Technician A says that governor pressure is controlled by torque converter rpm. Technician B says that governor pressure is controlled by output shaft speed. Who is correct?

Before we can calculate the amount of force created with a piston, which of the following do we need to know?

Which of the following additives control how temperature affects transmission fluid?

Which of the following is not part of an automatic transmission hydraulic system?