ppt2 Engines Quiz

What formula is used to calculate the swept volume of a cylinder?

• π r² x stroke

• 2π r x height

• π r² x height

• 2π r² x stroke

Answer explanation

The swept volume of a cylinder is calculated using the formula π r² x stroke, where r is the radius and stroke is the height of the cylinder's movement. This formula accounts for the area of the base multiplied by the height.

What is the relationship between circumference and diameter?

• Circumference is half the diameter

• Circumference is twice the diameter

• Circumference is π times the diameter

• Circumference is the same as the diameter

Answer explanation

The circumference of a circle is directly proportional to its diameter, specifically, it is π (pi) times the diameter. This means that for any circle, if you multiply the diameter by π, you will get the circumference.

What is the bore diameter of the cylinder mentioned in the document?

• 84mm

• 90mm

• 80mm

• 85mm

Answer explanation

The document specifies the bore diameter of the cylinder as 84mm, making it the correct choice among the options provided.

What is the stroke length of the cylinder mentioned in the document?

• 90mm

• 84mm

• 95mm

• 80mm

Answer explanation

The stroke length of the cylinder is specified in the document as 90mm, making it the correct choice among the options provided.

In the context of the document, what does TDC stand for?

• Top Dead Centre

• Total Diameter Calculation

• Torque Drive Centre

• Top Drive Cylinder

Answer explanation

In the context of the document, TDC stands for Top Dead Center, which is a common term in mechanics referring to the highest point of a piston in an engine. The other options do not align with this definition.

What is the purpose of calculating the swept volume in an engine?

• To determine the engine's displacement

• To measure fuel efficiency

• To calculate engine temperature

• To assess oil pressure

Answer explanation

Calculating the swept volume helps determine the engine's displacement, which is crucial for understanding its size and power output. This measurement directly influences engine performance and efficiency.

What is the bore of the cylinder in millimetres?

• 84 mm

• 90 mm

• 42 mm

• 100 mm

Answer explanation

The bore of the cylinder is given as 8.4 cm, which is the correct choice among the options provided. The other choices do not match the specified bore measurement.

What is the stroke length of the cylinder in millimetres?

• 90 mm

• 84 mm

• 42 mm

• 100 mm

Answer explanation

The stroke length of the cylinder is defined as the distance the piston travels within the cylinder. In this case, the correct stroke length is 9.0 cm, which is the only option that accurately represents the specified measurement.

How is the engine capacity rounded up in litres?

• By dividing by 1000

• By multiplying by 1000

• By adding 1000

• By subtracting 1000

Answer explanation

Engine capacity is measured in liters, and to convert from milliliters to liters, you divide by 1000. Therefore, the correct method to round up engine capacity in liters is by dividing by 1000.

If a cylinder has a swept volume of 549.5cm³, what is the total volume for a 4-cylinder engine?

• 1932.8 ounces

• 966.4 ounces

• 2416 ounces

• 1449.6 ounces

Answer explanation

To find the total volume of a 4-cylinder engine, multiply the swept volume of one cylinder (549.5cm³) by 4. Thus, 549.5cm³ x 4 = 2198cm³, which is the correct answer.