Understanding Flywheels in Engines

What is a flywheel and its primary function?

• A flywheel is a device that stores rotational energy and smooths out energy fluctuations.

• A flywheel is a device that cools down engines during operation.

• A flywheel is a mechanism that converts linear motion into rotational motion.

• A flywheel is a type of engine that generates electricity.

How does a flywheel contribute to engine performance?

• A flywheel reduces engine weight for better performance.

• A flywheel generates electrical power for the engine.

• A flywheel contributes to engine performance by smoothing power delivery and maintaining momentum.

• A flywheel increases fuel consumption in an engine.

Explain the turning moment diagram for a single cylinder 4-stroke I.C. engine.

• The turning moment diagram shows only the power stroke without considering other strokes.

• It illustrates the fuel consumption rate instead of torque variation.

• The diagram is constant throughout the engine cycle, indicating no change in torque.

• The turning moment diagram for a single cylinder 4-stroke I.C. engine shows the variation of torque with crank angle, highlighting maximum torque during the power stroke and lower torque during other strokes.

What is the significance of the turning moment in engine operation?

• The turning moment only affects fuel efficiency.

• The turning moment is irrelevant to engine design.

• The turning moment is solely related to engine size.

• The turning moment is significant as it influences the engine's power output and performance.

Define the coefficient of fluctuation of energy.

• Coefficient of fluctuation of energy = Standard deviation of energy / Mean energy

• Coefficient of fluctuation of energy = Standard deviation of energy - Mean energy

• Coefficient of fluctuation of energy = Mean energy + Standard deviation of energy

• Coefficient of fluctuation of energy = Mean energy / Standard deviation of energy

Why is the coefficient of fluctuation of energy important in engine design?

• It affects the engine's weight and size.

• It influences the color of the engine components.

• It determines the fuel type used in the engine.

• The coefficient of fluctuation of energy is important in engine design because it affects engine stability, performance, and component durability.

What does the coefficient of fluctuation of speed indicate?

• It indicates the maximum speed achieved.

• It measures the average speed over time.

• It reflects the total distance traveled.

• It indicates the variability of speed relative to its average.

How does the coefficient of fluctuation of speed affect engine stability?

• A high coefficient of fluctuation of speed negatively affects engine stability.

• A low coefficient of fluctuation of speed improves engine stability.

• The coefficient of fluctuation of speed has no effect on engine stability.

• A high coefficient of fluctuation of speed enhances engine performance.

Describe the relationship between flywheel mass and energy storage.

• Energy storage is solely dependent on flywheel speed, not mass.

• Increased flywheel mass decreases energy storage capacity.

• Flywheel mass has no effect on energy storage.

• Flywheel mass is directly related to energy storage; greater mass allows for more energy to be stored.

What role does the flywheel play in smoothing out engine power delivery?

• The flywheel increases engine speed by adding extra fuel.

• The flywheel generates electrical power for the engine.

• The flywheel acts as a brake to slow down the engine.

• The flywheel smooths out engine power delivery by storing and releasing rotational energy, reducing fluctuations in power.