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TEST BORRADO, QUIZÁS LE INTERESE: 3272-8 Aero (8.1)

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Título del Test: 3272-8 Aero (8.1) Descripción: 3272-8 Aero (8.1) Autor: Bernoulli OTROS TESTS DEL AUTOR Fecha de Creación: 13/10/2024 Categoría: Fans Número Preguntas: 52

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The ISA assumes a standard day. is taken from the equator. is taken from 45 degrees latitude. At higher altitudes as altitude increases, pressure decreases at constant rate. decreases exponentially. increases exponentially. When the pressure is half of that at sea level, what is the altitude? 12,000 ft. 18,000 ft. 8,000 ft. If gauge pressure on a standard day at sea level is 25 PSI, the absolute pressure is 39.7 PSI. 10.3 PSI. 43.8 PSI. Pressure decreases inversely proportional to temperature. proportionally with a decreases in temperature. Pressure and temperature are not related. As air gets colder, the service ceiling of an aircraft reduces. increases. remains the same. What is sea level pressure? 1012.3 mb. 1013.2 mb. 1032.2 mb. How does IAS at the point of stall vary with height? It decreases. It is practically constant. It increases. What is the lapse rate with regard to temperature? 4°C per 1000 ft. 1.98°C per 1000 ft. 1.98°F per 1000 ft. Standard sea level temperature is 20 degrees Celsius. 0 degrees Celsius. 15 degrees Celsius. As altitude increases, pressure decreases exponentially. decreases at constant rate. increases exponentially. Lapse rate usually refers to density. pressure. temperature. Temperature above 36,000 feet will increase exponentially. decrease exponentially. remain constant. With increasing altitude pressure decreases and temperature decreases at the same rate as pressure reduces. temperature decreases but at a lower rate than pressure reduces. temperature remains constant to 8000 ft. What is the temperature in comparison to ISA conditions at 30,000ft? -60°C. 0°C. -45°C. At what altitude is the tropopause? 36,000 ft. 57,000 ft. 63,000 ft. What approximate percentage of oxygen is in the atmosphere? 12%. 21%. 78%. Which has the greater density? Air at low altitude. Air at high altitude. It remains constant. At what altitude does stratosphere commence approximately? Sea level. 36,000 ft. 63,000 ft. A pressure of one atmosphere is equal to 14.7 psi. 1 inch Hg. 100 millibar. The millibar is a unit of atmospheric temperature. pressure altitude. barometric pressure. With an increase in altitude under I.S.A. conditions the temperature in the troposphere remains constant. decreases. increases. A barometer indicates pressure. density. temperature. Which condition is the actual amount of water vapour in a mixture of air and water? Relative humidity. Absolute humidity. Dew point. Which will weigh the least? 98 parts of dry air and 2 parts of water vapour. 50 parts of dry air and 50 parts of water vapour. 35 parts of dry air and 65 parts of water vapour. Which is the ratio of the water vapour actually present in the atmosphere to the amount that would be present if the air were saturated at the prevailing temperature and pressure? Absolute humidity. Dew point. Relative humidity. The speed of sound in the atmosphere changes with a change in pressure. varies according to the frequency of the sound. changes with a change in temperature. What is sea level pressure? 1032.2 mb. 1012.3 mb. 1013.2 mb. Which statement concerning heat and/or temperature is true? Temperature is a measure of the kinetic energy of the molecules of any substance. Temperature is a measure of the potential energy of the molecules of any substance. There is an inverse relationship between temperature and heat. What is absolute humidity? The amount of water vapor, usually discussed per unit volume. The temperature to which humid air must be cooled at constant pressure to become saturated. The amount of water vapor in a mixture of air and water vapor. The temperature to which humid air must be cooled at constant pressure to become saturated is called absolute humidity. dew point. relative humidity. Above 65,800 ft temperature decreases by 1.98°C up to 115,000 ft. remains constant up to 115,000 ft. increases by 0.303°C up to 115,000 ft. At sea level, ISA atmospheric pressure is 14.7 kPa. 10 Bar. 14.7 PSI. On a very hot day with ambient temperature higher than ISA, the pressure altitude is 20,000 ft. How much will the density altitude be? the same. greater than 20,000ft. less than 20,000ft. The atmospheric zone where the temperature remains fairly constant is called the stratosphere. ionosphere. troposphere. In the ISA the height of the tropopause is 11,000 feet. 11,000 metres. 36,000 metres. In the ISA the sea level pressure is taken to be 14 PSI. 1013.2 mb. 1.013 mb. In the ISA the temperature lapse rate with altitude is taken to be: dependent on pressure and density changes. linear. non linear. Put in sequence from the ground up tropopause, stratosphere, troposphere. tropopause, troposphere, stratosphere. troposphere, tropopause, stratosphere. The International Standard Atmosphere can be described as the atmosphere at 45 degrees north latitude. the atmosphere at the equator with certain conditions. the atmosphere which can be used Worldwide to provide comparable performance results. The temperature lapse rate below the tropopause is 1°C per 1000 ft. 2°C per 1000 ft. 3°C per 1000 ft. Above the tropopause air pressure decreases at a constant rate. decreases exponentially. increases exponentially. Which of the following is correct? Absolute pressure + Atmospheric pressure = Gauge pressure. Absolute pressure = Gauge pressure + Atmospheric pressure. Atmospheric pressure = Absolute pressure + Gauge pressure. As the altitude increases what happens of the ratio of Nitrogen to Oxygen? Increases. Decreases. Stays the same. What happens to the density of air as altitude is increased? Decreases. Stays the same. Increases. An aircraft is travelling at a speed of 720 nautical miles per hour. To calculate speed in MPH you divide by 0.83. multipy by 0.83. multiply by 1.15. The CofP is the point where the lift can be said to act. the three axis of rotation meet. all the forces on an aircraft act. At stall, the wingtip stagnation point doesnt move. moves toward the lower surface of the wing. moves toward the upper surface of the wing. The rigging angle of incidence of an elevator is the angle between the bottom surface of the elevator and the longitudinal datum. the angle between the bottom surface of the elevator and the horizontal in the rigging position. the angle between the mean chord line and the horizontal in the rigging position. Which of the following is true? Lift acts at right angles to the relative airflow and weight acts vertically down. Lift acts at right angles to the wing chord line and weight acts vertically down. Lift acts at right angles to the relative air flow and weight acts at right angles to the aircraft centre line. What happens to air flowing at the speed of sound when it enters a converging duct? Velocity increases, pressure and density decreases. Velocity, pressure and density increase. Velocity decreases, pressure and density increase. As the angle of attack of an airfoil increases the centre of pressure remains stationary. moves aft. moves forward.

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