Questions and Answers
What is absolute humidity a measure of?
What does absolute pressure measure?
Which of the following accurately describes adiabatic compression?
What is the primary function of an air exhauster?
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What does atmospheric pressure refer to?
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Which component of an air compressor aids in cooling the compressed air?
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What is the main purpose of an anemometer?
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Which type of air compressor has a flow of fluid parallel to its axis?
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What does the Ackerman principle achieve during a vehicle's turn?
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Which type of drag is NOT a component of aerodynamic drag?
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What is the primary function of an air bleeder in a hydraulic system?
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The purpose of an antiroll bar is to:
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What defines the aspect ratio of a tire?
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Which system utilizes compressed air for braking?
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What does aerodynamic lift refer to in vehicle dynamics?
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What characteristic describes an all-weather tire?
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What occurs when the antilock brake system (ABS) is activated?
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In vehicle suspension, what does an air spring do when compressed?
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Study Notes
Humidity and Pressure
- Absolute Humidity: Represents the actual quantity of water vapour in the air, measured as grains of moisture per cubic foot.
- Absolute Pressure: Pressure measured from a true zero point, indicating no pressure.
Air and Compressors
- Air Composition: Comprises 23.2% oxygen, 75.5% nitrogen, 1.3% argon by weight; 21% oxygen, 78.06% nitrogen, and 0.94% argon by volume.
- Air Compressor: A machine that compresses air into a receiver for use at various distances.
- Air Cooled Compressor: Features a cylinder with thin fins for enhanced cooling through airflow.
- Air Exhauster: Functions as a suction fan or vacuum pump.
Measurement Instruments
- Air Meter: Measures the flow rate of air or gas.
- Anemometer: Measures gas flow velocity using mechanical or electrical methods.
Pressure and Flow
- Atmospheric Pressure: The force exerted by the weight of the atmosphere on surfaces.
- Axial Compressor: High-efficiency compressor with alternating moving and fixed blades, fluid flow parallel to the compressor axis.
Automotive Concepts
- Accelerator: Pedal linked to throttle or fuel injection control in motor vehicles.
- Ackerman Principle: Steering geometry allowing inner wheels to turn more sharply than outer wheels during turns—creates toe out on turns.
- Aerodynamic Drag: Air resistance affecting vehicle motion, consisting of several drag types.
- Aerodynamic Lift: Vertical force component generated by pressure distribution on vehicle body.
Systems and Devices
- Air Bleeder: Removes air from hydraulic systems via various devices like needle valves and bleed plugs.
- Air Brake: Employs compressed air for brake application.
- Air Spring: Provides a spring effect using compressed air in suspension systems.
- All Weather Tyre: Designed for optimal traction across diverse weather conditions.
Safety Features
- Anti Dazzle Mirror: Adjusts reflection based on the headlight beam of a following vehicle to reduce glare.
- Antilock Brake System (ABS): Prevents wheel locking during hard braking by intermittently releasing brakes to maintain traction.
Vehicle Characteristics
- Antiroll Bar: Counteracts opposed spring deflections to improve handling.
- Aspect Ratio: Ratio of a tyre's height to its width when fully inflated.
- Automobile Definition: A self-propelled vehicle powered by a source that allows it to move independently.
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Description
This quiz covers key concepts related to atmospheric science, including absolute humidity, absolute pressure, and adiabatic compression. Each term is explained in the context of air composition and heat exchange processes. Test your understanding of these important concepts in meteorology and physics.
