What causes wind? a. Difference in pressure b. Rotation of the earth c. Frontal systems d. Difference in temperature

What causes wind?  
a. Difference in pressure  
b. Rotation of the earth  
c. Frontal systems  
d. Difference in temperature
by

1 Answer

Answer :

a. Difference in pressure
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Related questions

What causes wind? a. Difference in pressure b. Rotation of the earth c. Frontal systems d. Difference in temperature

Description : What causes wind? a. Difference in pressure b. Rotation of the earth c. Frontal systems d. Difference in temperature

Last Answer : a. Difference in pressure

The greater the pressure gradient the: a. Closer the isobars and the lower the temperatures b. Further the isobars will be apart and the higher the temperature c. Closer the isobars and the stronger the wind d. Further the isobars will be apart and the weaker the wind

Description : The greater the pressure gradient the: a. Closer the isobars and the lower the temperatures b. Further the isobars will be apart and the higher the temperature c. Closer the isobars and the stronger the wind d. Further the isobars will be apart and the weaker the wind

Last Answer : c. Closer the isobars and the stronger the wind

For take-off performance calculations, what is taken into account? a. OAT, pressure altitude, wind, weight b. Standard temperature, altitude, wind, weight c. Standard altitude, standard temperature, wind, weight d. Standard temperature, pressure altitude, wind, weight

Description : For take-off performance calculations, what is taken into account? a. OAT, pressure altitude, wind, weight b. Standard temperature, altitude, wind, weight c. Standard altitude, standard temperature, wind, weight d. Standard temperature, pressure altitude, wind, weight

Last Answer : a. OAT, pressure altitude, wind, weight

Shortly after take-off, the altitude of the aeroplane suffers an abrupt pitch-up and IAS rapidly decreases followed quickly by a decrease in altitude. Engine indications are normal. You should suspect what and what should you do? a. Marked temperature drop; apply full power b. Loss of head wind or an increase in tail wind; apply full power c. Incipient engine failure (ignore instruments); lower the nose to gain airspeed d. Local clear air turbulence; reduce speed to VRA and ride it out

Description : Shortly after take-off, the altitude of the aeroplane suffers an abrupt pitch-up and IAS rapidly decreases followed quickly by a decrease in altitude. Engine indications are normal. You should suspect what ... to gain airspeed d. Local clear air turbulence; reduce speed to VRA and ride it out

Last Answer : b. Loss of head wind or an increase in tail wind; apply full power

In a Doppler VOR (DVOR) the reference signal is _____, the bearing signal is ______ and the direction of rotation of the bearing signal is ______. a. AM, FM, anti-clockwise b. AM, FM, clockwise c. FM, AM, anti-clockwise d. FM, AM, clockwise

Description : In a Doppler VOR (DVOR) the reference signal is _____, the bearing signal is ______ and the direction of rotation of the bearing signal is ______. a. AM, FM, anti-clockwise b. AM, FM, clockwise c. FM, AM, anti-clockwise d. FM, AM, clockwise

Last Answer : a. AM, FM, anti-clockwise

With reference to Traffic Collision Avoidance Systems, the difference between TCAS I and II is that: a. TCAS II can provide Traffic Advisories and Resolution Advisories whilst TCAS I can only provide Traffic Advisories b. TCAS II can only be fitted to large aircrafts which carry more than 30 passengers. While TCAS I can be fitted to any aircraft. c. TCAS I can be fitted aircrafts which carry transponders with Mode A only while TCAS II can be fitted to aircrafts whose transponders include either Mode C or Mode S. d. TCAS II can only be to aircraft which are equipped with EFIS

Description : With reference to Traffic Collision Avoidance Systems, the difference between TCAS I and II is that: a. TCAS II can provide Traffic Advisories and Resolution Advisories whilst TCAS I can only provide Traffic ... C or Mode S. d. TCAS II can only be to aircraft which are equipped with EFIS

Last Answer : a. TCAS II can provide Traffic Advisories and Resolution Advisories whilst TCAS I can only provide Traffic Advisories

Which wind-shear condition results in a loss of airspeed? a. Decreasing headwind or tailwind b. Increasing headwind and decreasing tailwind c. Decreasing headwind and increasing tailwind d. Increasing headwind or tailwind

Description : Which wind-shear condition results in a loss of airspeed? a. Decreasing headwind or tailwind b. Increasing headwind and decreasing tailwind c. Decreasing headwind and increasing tailwind d. Increasing headwind or tailwind

Last Answer : c. Decreasing headwind and increasing tailwind

What is the recommended technique to counter the loss of airspeed and resultant lift from wind shear? a. Maintain, or increase, pitch attitude and accept the lower-than-normal airspeed indications b. Lower the pitch attitude and regain lost airspeed c. Avoid overstressing aircraft, pitch to stick shaker, and apply maximum power d. Accelerate the aircraft to prevent a stall by sacrificing altitude

Description : What is the recommended technique to counter the loss of airspeed and resultant lift from wind shear? a. Maintain, or increase, pitch attitude and accept the lower-than-normal airspeed ... shaker, and apply maximum power d. Accelerate the aircraft to prevent a stall by sacrificing altitude

Last Answer : c. Avoid overstressing aircraft, pitch to stick shaker, and apply maximum power

A constant rate of climb in an aeroplane is determined by: a. Wind speed b. The aircraft weight c. Excess engine power d. Excess airspeed

Description : A constant rate of climb in an aeroplane is determined by: a. Wind speed b. The aircraft weight c. Excess engine power d. Excess airspeed

Last Answer : c. Excess engine power

Which of the following conditions is worst with regard to wake vortex turbulence? a. Lights winds near the surface b. Strong winds near the surface c. Marked vertical wind shear d. Marked atmospheric turbulence near the ground

Description : Which of the following conditions is worst with regard to wake vortex turbulence? a. Lights winds near the surface b. Strong winds near the surface c. Marked vertical wind shear d. Marked atmospheric turbulence near the ground

Last Answer : a. Lights winds near the surface

With what a met phenomenon is wind shear most associated? a. Thunderstorms b. Passage of a warm front c. Tropical revolving storms d. Standing mountain waves

Description : With what a met phenomenon is wind shear most associated? a. Thunderstorms b. Passage of a warm front c. Tropical revolving storms d. Standing mountain waves

Last Answer : a. Thunderstorms

A flight is to depart from an airport with runway 09 and 27. Surface wind is 270/05; an inversion is reported at 300 feet with turbulence and wind shear. The wind just above the inversion is 090/30. What is the safest departure procedure? a. Take-off is not possible under these conditions b. Depart on runway 09 with a tailwind c. Depart runway 27 with maximum throttle during the passage through the inversion d. Depart runway 27 with as steep an ascent as possible

Description : A flight is to depart from an airport with runway 09 and 27. Surface wind is 270/05; an inversion is reported at 300 feet with turbulence and wind shear. The wind just above the ... throttle during the passage through the inversion d. Depart runway 27 with as steep an ascent as possible

Last Answer : b. Depart on runway 09 with a tailwind

ATC will only report wind as gusting if: a. Gust speed exceeds mean speed by >15kts b. Gusts to over 25kts c. Gusts exceed mean speed by 10kts d. Gusts to under 25kts

Description : ATC will only report wind as gusting if: a. Gust speed exceeds mean speed by >15kts b. Gusts to over 25kts c. Gusts exceed mean speed by 10kts d. Gusts to under 25kts

Last Answer : c. Gusts exceed mean speed by 10kts

Where is wind shear the greatest? a. Near a strong low level inversion and in the region of a thunderstorm b. Near a valley with wind speeds greater than 35kts c. On the windward side of a mountain d. When the wind is greater than 35kts

Description : Where is wind shear the greatest? a. Near a strong low level inversion and in the region of a thunderstorm b. Near a valley with wind speeds greater than 35kts c. On the windward side of a mountain d. When the wind is greater than 35kts

Last Answer : a. Near a strong low level inversion and in the region of a thunderstorm

A flight is planned from L to M, distance 850 nm. Wind component out is 35 kt(TWC), TAS 450kt. Mean fuel flow out is 2500kg/hr, mean fuel flow inbound is 1900kg/hr and the fuel available is 6000kg. The time and distance to PSR is: a. 1hr 30 min, 660nm b. 1hr 30 min, 616nm c. 1hr 15 min, 606nm d. 1hr 16 min, 616nm

Description : A flight is planned from L to M, distance 850 nm. Wind component out is 35 kt(TWC), TAS 450kt. Mean fuel flow out is 2500kg/hr, mean fuel flow inbound is 1900kg/hr and the fuel available is 6000kg. The time ... 30 min, 660nm b. 1hr 30 min, 616nm c. 1hr 15 min, 606nm d. 1hr 16 min, 616nm

Last Answer : d. 1hr 16 min, 616nm

After flying for 16 minutes at 100kt TAS with a 20kt tail wind, you have to return to the airfield of departure. You will arrive after: a. 10 min 40 sec b. 20 min c. 24 min d. 16 min

Description : After flying for 16 minutes at 100kt TAS with a 20kt tail wind, you have to return to the airfield of departure. You will arrive after: a. 10 min 40 sec b. 20 min c. 24 min d. 16 min

Last Answer : c. 24 min

If the track on an instrument departure is published, the pilot is expected to: a. Correct for the correct wind so as to stay within controlled airspace b. Ask ATC for another heading to steer correcting for wind c. Ignore the wind and proceed with a heading equal to the track d. Ask ATC for permission to correct heading for wind

Description : If the track on an instrument departure is published, the pilot is expected to: a. Correct for the correct wind so as to stay within controlled airspace b. Ask ATC for another heading to steer ... proceed with a heading equal to the track d. Ask ATC for permission to correct heading for wind

Last Answer : a. Correct for the correct wind so as to stay within controlled airspace

What phenomenon causes induced drag? a. Wing tip vortices b. Wing tanks c. The increased pressure at the leading edge

Description : What phenomenon causes induced drag? a. Wing tip vortices b. Wing tanks c. The increased pressure at the leading edge

Last Answer : a. Wing tip vortices

In the event of cabin depressurization, the actions of the pilot will be to: a. Immediately commence a diversion to a suitable alternate b. Increase engine power to provide additional airflow to the pressurization systems c. Maintain the aeroplane altitude to prevent further damage to the airframe by over loading of the structure d. Commence a descent to an altitude where the supplemental oxygen supply is sufficient for all crew and passengers

Description : In the event of cabin depressurization, the actions of the pilot will be to: a. Immediately commence a diversion to a suitable alternate b. Increase engine power to provide additional ... a descent to an altitude where the supplemental oxygen supply is sufficient for all crew and passengers

Last Answer : d. Commence a descent to an altitude where the supplemental oxygen supply is sufficient for all crew and passengers

With reference to Traffic Collision Avoidance Systems: a. RAs may be disregarded only when the pilot visually identifies the potentially conflicting traffic and decides that no deviation is necessary and has the clearance confirmed by ATC b. RAs may be disregarded only when the pilot visually identifies the potentially conflicting traffic and decides that no deviation is necessary and has advised ATC of the other aircraft’s proximity c. RAs must never be disregarded d. RAs may be disregarded only when the pilot visually identifies the potentially conflicting traffic and decides that no deviation is necessary

Description : With reference to Traffic Collision Avoidance Systems: a. RAs may be disregarded only when the pilot visually identifies the potentially conflicting traffic and decides that no deviation ... pilot visually identifies the potentially conflicting traffic and decides that no deviation is necessary

Last Answer : d. RAs may be disregarded only when the pilot visually identifies the potentially conflicting traffic and decides that no deviation is necessary

Rotation of the earth causes deflection of wind by which force? -General Knowledge

Description : Rotation of the earth causes deflection of wind by which force? -General Knowledge

Last Answer : The answer is 'Coriolis force'

Rotation of the earth causes deflection of wind by which force? -Do You Know?

Description : Rotation of the earth causes deflection of wind by which force? -Do You Know?

Last Answer : answer:

Rotation of the earth causes deflection of wind by which force? -General Knowledge

Description : Rotation of the earth causes deflection of wind by which force? -General Knowledge

Last Answer : answer:

Rotation of the earth causes deflection of wind by which force? -General Knowledge

Description : Rotation of the earth causes deflection of wind by which force? -General Knowledge

Last Answer : answer:

Rotation of the earth causes deflection of wind by which force?

Description : Rotation of the earth causes deflection of wind by which force?

Last Answer : Coriolis force

Rotation of the earth causes deflection of wind by which force? —

Description : Rotation of the earth causes deflection of wind by which force? —

Last Answer : Coriolis force

During a slow decompression, passengers will occur: a. The cabin temperature will fall as pressure reduces b. Body cavities (sinuses, ears, etc.) will become pressurised and may require assistance in venting c. As soon as the pressure falls, the oxygen drop-out system will operate d. No contra effects, as slow decompression has no effect on the human body

Description : During a slow decompression, passengers will occur: a. The cabin temperature will fall as pressure reduces b. Body cavities (sinuses, ears, etc.) will become pressurised and may require assistance in ... will operate d. No contra effects, as slow decompression has no effect on the human body

Last Answer : b. Body cavities (sinuses, ears, etc.) will become pressurised and may require assistance in venting

An inversion is: a. A decrease of pressure with height b. A decrease of temperature with height c. An increase of temperature with height d. An increase of pressure with height

Description : An inversion is: a. A decrease of pressure with height b. A decrease of temperature with height c. An increase of temperature with height d. An increase of pressure with height

Last Answer : c. An increase of temperature with height

Generally, as altitude increases: a. Temperature decreases and density increases b. Temperature, pressure and density decreases c. Temperature and pressure increase and density decreases d. Temperature decreases and pressure and density increase

Description : Generally, as altitude increases: a. Temperature decreases and density increases b. Temperature, pressure and density decreases c. Temperature and pressure increase and density decreases d. Temperature decreases and pressure and density increase

Last Answer : b. Temperature, pressure and density decreases

A pressure head is subject to the following errors: a. Position, manoeuvre induced, temperature b. Position, manoeuvre induced c. Position, manoeuvre induced, density d. Position, manoeuvre induced, instrument

Description : A pressure head is subject to the following errors: a. Position, manoeuvre induced, temperature b. Position, manoeuvre induced c. Position, manoeuvre induced, density d. Position, manoeuvre induced, instrument

Last Answer : d. Position, manoeuvre induced, instrument

Maximum Differential pressure: a. Is the maximum authorized pressure difference between the inside of the fuselage and the atmospheric ambient pressure b. Is the absolute pressure provided by the vacuum pump c. Is the pressure loss over a given time limit d. Is the absolute pressure the cabin pressure ducting is designed to carry

Description : Maximum Differential pressure: a. Is the maximum authorized pressure difference between the inside of the fuselage and the atmospheric ambient pressure b. Is the absolute pressure provided by the ... time limit d. Is the absolute pressure the cabin pressure ducting is designed to carry

Last Answer : a. Is the maximum authorized pressure difference between the inside of the fuselage and the atmospheric ambient pressure

Which statement best describes the operating principle of a constant-speed propeller? a. As throttle setting is changed by the pilot, the prop governor causes pitch angle of the propeller blades to remain unchanged b. The propeller control regulates the engine RPM and in turn the propeller RPM c. A high blade angle, or increased pitch, reduces the propeller drag and allows more engine power for take-offs d. As the propeller control setting is changed by the pilot, the RPM of the engines remains constant as the pitch angle of the propeller changes

Description : Which statement best describes the operating principle of a constant-speed propeller? a. As throttle setting is changed by the pilot, the prop governor causes pitch angle of the propeller blades to ... the pilot, the RPM of the engines remains constant as the pitch angle of the propeller changes

Last Answer : b. The propeller control regulates the engine RPM and in turn the propeller RPM

What criteria determine which engine is the “critical” engine of a twin-engine aeroplane? a. The one with the center of thrust farthest from the centreline of the fuselage b. The one with the center of thrust closest to the centreline of the fuselage c. The one designated by the manufacturer which develops most usable thrust d. The failure of which causes the least yawing moment

Description : What criteria determine which engine is the critical engine of a twin-engine aeroplane? a. The one with the center of thrust farthest from the centreline of the fuselage b. The one ... the manufacturer which develops most usable thrust d. The failure of which causes the least yawing moment

Last Answer : b. The one with the center of thrust closest to the centreline of the fuselage

Which statement is true relative to changing angle of attack? a. A decrease in angle of attack will increase pressure below the wing and decrease drag b. An increase in angle of attack will decrease pressure below the wing and decrease drag c. An increase in angle of attack will increase drag d. An increase in angle of attack will decrease the lift coefficient

Description : Which statement is true relative to changing angle of attack? a. A decrease in angle of attack will increase pressure below the wing and decrease drag b. An increase in angle of attack will ... of attack will increase drag d. An increase in angle of attack will decrease the lift coefficient

Last Answer : c. An increase in angle of attack will increase drag

The station pressure used in surface weather charts is: a. QNE b. QFF c. QFE d. QNH

Description : The station pressure used in surface weather charts is: a. QNE b. QFF c. QFE d. QNH

Last Answer : a. QNE

Which constant pressure altitude chart is standard for a 30,065 ft pressure level (FL 300)? a. 200 hPa b. 700 hPa c. 500 hPa d. 300 hPa

Description : Which constant pressure altitude chart is standard for a 30,065 ft pressure level (FL 300)? a. 200 hPa b. 700 hPa c. 500 hPa d. 300 hPa

Last Answer : d. 300 hPa

You are cruising at FL 200, OAT is -40°C, sea level pressure is 1033 hPa. Calculate the true altitude. a. 20,660 ft b. 21,740 ft c. 18,260 ft d. 19, 340 ft

Description : You are cruising at FL 200, OAT is -40°C, sea level pressure is 1033 hPa. Calculate the true altitude. a. 20,660 ft b. 21,740 ft c. 18,260 ft d. 19, 340 ft

Last Answer : d. 19, 340 ft

The isobars drawn on a surface weather chart represent lines of equal pressure: a. At flight level b. At height of observatory c. At a determined density altitude d. Reduced to sea level

Description : The isobars drawn on a surface weather chart represent lines of equal pressure: a. At flight level b. At height of observatory c. At a determined density altitude d. Reduced to sea level

Last Answer : d. Reduced to sea level

You are flying at FL170. The pressure level which is closest to you is the: a. 300mb b. 700mb c. 500mb d. 850mb

Description : You are flying at FL170. The pressure level which is closest to you is the: a. 300mb b. 700mb c. 500mb d. 850mb

Last Answer : c. 500mb

A pilot suffering from decompression sickness should: a. Descend to a lower level where the symptoms will disappear and continue the flight at this or a lower level b. Decrease the cabin pressure to relieve the symptoms c. Continue the flight at a lower altitude and carry out exercises to relieve the pain in the affected site d. Land as soon as possible and seek medical assistance

Description : A pilot suffering from decompression sickness should: a. Descend to a lower level where the symptoms will disappear and continue the flight at this or a lower level b. Decrease the cabin pressure ... the pain in the affected site d. Land as soon as possible and seek medical assistance

Last Answer : d. Land as soon as possible and seek medical assistance

The effects of carbon monoxide: a. Increases with altitude b. Decreases with altitude c. Increases with increase of density d. Decreases with pressure loss

Description : The effects of carbon monoxide: a. Increases with altitude b. Decreases with altitude c. Increases with increase of density d. Decreases with pressure loss

Last Answer : a. Increases with altitude

The most likely cause of brake fade is: a. Oil or grease on the brake drums b. Worn stators c. The pilot reducing the brake pressure d. The brake pads overheating

Description : The most likely cause of brake fade is: a. Oil or grease on the brake drums b. Worn stators c. The pilot reducing the brake pressure d. The brake pads overheating

Last Answer : d. The brake pads overheating

The purpose of an accumulator is to: a. Relieve excess pressure b. Store fluid under pressure c. Store compressed gas for tyre inflation d. Remove air from the system

Description : The purpose of an accumulator is to: a. Relieve excess pressure b. Store fluid under pressure c. Store compressed gas for tyre inflation d. Remove air from the system

Last Answer : b. Store fluid under pressure

If cabin pressure is decreasing, the cabin VSI will indicate: a. Zero b. Climb c. Descent d. Reducing pressure

Description : If cabin pressure is decreasing, the cabin VSI will indicate: a. Zero b. Climb c. Descent d. Reducing pressure

Last Answer : b. Climb

A shuttle valve will: a. Allow the accumulator to be emptied after engine shut down b. Reduce pump loading when normal system pressure is reached c. Automatically switched to a more appropriate source of hydraulic supply d. Operate on a rising pressure, higher than the Full Flow relief valve

Description : A shuttle valve will: a. Allow the accumulator to be emptied after engine shut down b. Reduce pump loading when normal system pressure is reached c. Automatically switched to a more appropriate source of hydraulic supply d. Operate on a rising pressure, higher than the Full Flow relief valve

Last Answer : c. Automatically switched to a more appropriate source of hydraulic supply

When does the engine High Pressure fuel shut off valve close? a. After a booster pump failure b. When the engine fuel switch is selected ‘ON’ during engine start c. When flight idle is selected d. When the engine fuel switch is selected ‘OFF’ during engine shut-down

Description : When does the engine High Pressure fuel shut off valve close? a. After a booster pump failure b. When the engine fuel switch is selected ‘ON’ during engine start c. When flight idle is selected d. When the engine fuel switch is selected ‘OFF’ during engine shut-down

Last Answer : d. When the engine fuel switch is selected ‘OFF’ during engine shut-down

Which of the following instruments require inputs of both pitot and static pressure? a. Airspeed indicator, machmeter and vertical speed indicator b. Airspeed indicator, vertical speed indicator, altimeter c. Airspeed indicator only d. Airspeed indicator and machmeter

Description : Which of the following instruments require inputs of both pitot and static pressure? a. Airspeed indicator, machmeter and vertical speed indicator b. Airspeed indicator, vertical speed indicator, altimeter c. Airspeed indicator only d. Airspeed indicator and machmeter

Last Answer : d. Airspeed indicator and machmeter

Cabin altitude in pressured flight is: a. The altitude corresponding to cabin pressure regardless of aircraft height b. Is presented on a second needle on the aircraft altimeter c. Altitude at which cabin pressure equals ambient pressure d. Altitude corresponding to cabin pressure in relation to MSL ISA conditions

Description : Cabin altitude in pressured flight is: a. The altitude corresponding to cabin pressure regardless of aircraft height b. Is presented on a second needle on the aircraft altimeter c. ... equals ambient pressure d. Altitude corresponding to cabin pressure in relation to MSL ISA conditions

Last Answer : a. The altitude corresponding to cabin pressure regardless of aircraft height b. Is presented on a second needle on the aircraft altimeter

When would the negative differential limits be reached/exceeded? a. Rapid descent when AC descends below cabin altitude b. During ground pressure testing c. Rapid ascent when aircraft climbs d. When changing to manual operation

Description : When would the negative differential limits be reached/exceeded? a. Rapid descent when AC descends below cabin altitude b. During ground pressure testing c. Rapid ascent when aircraft climbs d. When changing to manual operation

Last Answer : a. Rapid descent when AC descends below cabin altitude