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

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
by

1 Answer

Answer :

a. Is the maximum authorized pressure difference between the inside of the  fuselage and the atmospheric ambient pressure
by

Related questions

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 vacuum ... 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

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

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

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

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

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

One way in which passengers can be reassured during an emergency is: a. To regularly see members of the flight crew calmly moving about the cabin in a relaxed manner b. For the captain or first officer to keep a running commentary going over the PA c. For the cabin staff to ensure the passengers are aware of what is happening and that they are complying with instructions d. For the cabin staff to direct passengers’ attention to the emergency passenger brief cards and make sure that they have read them

Description : One way in which passengers can be reassured during an emergency is: a. To regularly see members of the flight crew calmly moving about the cabin in a relaxed manner b. For the ... to direct passengers' attention to the emergency passenger brief cards and make sure that they have read them

Last Answer : c. For the cabin staff to ensure the passengers are aware of what is happening and that they are complying with instructions

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

One item listed on the name plate of a cargo pump motor is 'degrees centigrade rise.' This number is based on _____________. A. normal temperature change from cold to hot B. an ambient temperature of 40°C C. minimum heat rise from no load to full load D. maximum degrees centigrade rise from absolute zero

Description : One item listed on the name plate of a cargo pump motor is 'degrees centigrade rise.' This number is based on _____________. A. normal temperature change from cold to hot B. an ambient temperature ... . minimum heat rise from no load to full load D. maximum degrees centigrade rise from absolute zero

Last Answer : Answer: B

The excess cabin altitude alerting system must operate to warn the crew at: a. 8,000ft b. 10,000ft c. 13,000ft d. 14,000ft

Description : The excess cabin altitude alerting system must operate to warn the crew at: a. 8,000ft b. 10,000ft c. 13,000ft d. 14,000ft

Last Answer : b. 10,000ft

What controls cabin pressurisation? a. ECS pack mass flow controller b. Outflow valve c. Engine bleed valve d. Inflow valve

Description : What controls cabin pressurisation? a. ECS pack mass flow controller b. Outflow valve c. Engine bleed valve d. Inflow valve

Last Answer : b. Outflow valve

The ink of a pen leaks out in an airplane because (a) Atmospheric pressure increases (b) Pressure of ink inside is more than the ambient pressure (c) High speed of the aeroplane (d) Temperature difference

Description : The ink of a pen leaks out in an airplane because (a) Atmospheric pressure increases (b) Pressure of ink inside is more than the ambient pressure (c) High speed of the aeroplane (d) Temperature difference

Last Answer : Ans:(b)

What is considered as the actual pressure at a given position and is measured relative to absolute vacuum?  A. Gage pressure  B. Absolute pressure  C. Atmospheric pressure  D. Vacuum pressure

Description : What is considered as the actual pressure at a given position and is measured relative to absolute vacuum?  A. Gage pressure  B. Absolute pressure  C. Atmospheric pressure  D. Vacuum pressure

Last Answer : Absolute pressure

Maximum endurance: a. Can be achieved in level unaccelerated flight with minimum fuel consumption b. Can be achieved by flying at the best rate of climb speed in straight and level flight c. Can be achieved in a steady climb d. Can be achieved by flying at the absolute ceiling

Description : Maximum endurance: a. Can be achieved in level unaccelerated flight with minimum fuel consumption b. Can be achieved by flying at the best rate of climb speed in straight and level flight c. Can be achieved in a steady climb d. Can be achieved by flying at the absolute ceiling

Last Answer : a. Can be achieved in level unaccelerated flight with minimum fuel consumption

Working principle of manometer comprises of balancing a coloumn of liquid against the pressure to be measured. Inclined tube manometer is especially used for the measurement of __________ pressure. (A) Small differential (B) Atmospheric (C) Absolute (D) Gage

Description : Working principle of manometer comprises of balancing a coloumn of liquid against the pressure to be measured. Inclined tube manometer is especially used for the measurement of __________ pressure. (A) Small differential (B) Atmospheric (C) Absolute (D) Gage

Last Answer : (A) Small differential

Manometers measure the __________ pressure. (A) Vacuum as well as the atmospheric (B) Difference in (C) Absolute (D) Gage

Description : Manometers measure the __________ pressure. (A) Vacuum as well as the atmospheric (B) Difference in (C) Absolute (D) Gage

Last Answer : (B) Difference in

When the pressure intensity at a point is more than the local atmospheric pressure, then the difference of these two pressures is called (A) Gauge pressure (B) Absolute pressure (C) Positive gauge pressure (D) Vacuum pressure

Description : When the pressure intensity at a point is more than the local atmospheric pressure, then the difference of these two pressures is called (A) Gauge pressure (B) Absolute pressure (C) Positive gauge pressure (D) Vacuum pressure

Last Answer : Answer: Option C

The difference between the absolute pressure and the atmospheric pressure is called the _____ pressure.  A. Gage  B. Normal  C. Standard  D. Vacuum

Description : The difference between the absolute pressure and the atmospheric pressure is called the _____ pressure.  A. Gage  B. Normal  C. Standard  D. Vacuum

Last Answer : Gage

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. ... pressure 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

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

The pressure of a liquid measured with the help of a Piezometer tube is (A) Vacuum pressure (B) Gauge pressure (C) Absolute pressure (D) Atmospheric pressure

Description : The pressure of a liquid measured with the help of a Piezometer tube is (A) Vacuum pressure (B) Gauge pressure (C) Absolute pressure (D) Atmospheric pressure

Last Answer : Answer: Option B

The absolute pressure is equal to (A) Gauge pressure + atmospheric pressure (B) Gauge pressure - atmospheric pressure (C) Atmospheric pressure - gauge pressure (D) Gauge pressure - vacuum pressure

Description : The absolute pressure is equal to (A) Gauge pressure + atmospheric pressure (B) Gauge pressure - atmospheric pressure (C) Atmospheric pressure - gauge pressure (D) Gauge pressure - vacuum pressure

Last Answer : Answer: Option A

What is the pressure below atmospheric pressure called?  A. Gage pressure  B. Absolute pressure  C. Atmospheric pressure  D. Vacuum pressure

Description : What is the pressure below atmospheric pressure called?  A. Gage pressure  B. Absolute pressure  C. Atmospheric pressure  D. Vacuum pressure

Last Answer : Vacuum pressure

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

A compressor that takes suction at a pressure below atmospheric and discharge against atmospheric pressure is called a __________ pump. (A) Sump (B) Volute (C) Vacuum (D) Submerged

Description : A compressor that takes suction at a pressure below atmospheric and discharge against atmospheric pressure is called a __________ pump. (A) Sump (B) Volute (C) Vacuum (D) Submerged

Last Answer : (C) Vacuum

What is the absolute time a pilot should stop drinking before flying? a. 6 hours but it depends upon the amount of alcohol that has been consumed b. 24 hours but it depends upon the amount of alcohol that has been consumed c. 12 hours but it depends upon the amount of alcohol that has been consumed d. 8 hours but it depends upon the amount of alcohol that has been consumed

Description : What is the absolute time a pilot should stop drinking before flying? a. 6 hours but it depends upon the amount of alcohol that has been consumed b. 24 hours but it depends upon the amount of ... that has been consumed d. 8 hours but it depends upon the amount of alcohol that has been consumed

Last Answer : d. 8 hours but it depends upon the amount of alcohol that has been consumed

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

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

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 hand pump is usually fitted: a. For ground servicing purposes b. Lowering the landing gear in an emergency c. Pressurising the oleo struts in the air d. Retracting the gear after take-off

Description : A hand pump is usually fitted: a. For ground servicing purposes b. Lowering the landing gear in an emergency c. Pressurising the oleo struts in the air d. Retracting the gear after take-off

Last Answer : a. For ground servicing purposes

If it is suspected that a bomb is on board an aeroplane, the measures that should be taken are designed to: a. Disable the device b. Find out what will trigger the device c. Prevent knowledge of the device on board getting to the passengers d. Locate and move the device to the ‘least risk’ location and apply as much padding as possible

Description : If it is suspected that a bomb is on board an aeroplane, the measures that should be taken are designed to: a. Disable the device b. Find out what will trigger the device c. Prevent ... d. Locate and move the device to the least risk' location and apply as much padding as possible

Last Answer : d. Locate and move the device to the ‘least risk’ location and apply as much padding as possible

Which of the following statements regarding evacuated tube collectors (ETC) are true? i) ETC is used for high temperatures upto 150oC ii) because of use of vacuum between two concentric glass tube, higher amount of heat is retained in ETC iii) heat loss due to conduction back to atmosphere from ETC is high iv) performance of evacuated tube is highly dependent upon the ambient temperature i & iii b) ii & iii c) i & iv d) i & ii

Description : Which of the following statements regarding evacuated tube collectors (ETC) are true? i) ETC is used for high temperatures upto 150oC ii) because of use of vacuum between two concentric glass tube, higher amount of heat is ... upon the ambient temperature i & iii b) ii & iii c) i & iv d) i & ii

Last Answer : d) i & ii

Clearance limit is defined as: a. The flight level to which an aircraft is granted ATC clearance b. The time at which the ATC clearance expires c. The point to which aircraft is granted ATC clearance d. The height below which you will hit the first obstacle

Description : Clearance limit is defined as: a. The flight level to which an aircraft is granted ATC clearance b. The time at which the ATC clearance expires c. The point to which aircraft is granted ATC clearance d. The height below which you will hit the first obstacle

Last Answer : c. The point to which aircraft is granted ATC clearance

Permanent pressure loss in a well designed Venturimeter is about __________ percent of the venturi differential. (A) 1 (B) 10 (C) 30 (D) 50

Description : Permanent pressure loss in a well designed Venturimeter is about __________ percent of the venturi differential. (A) 1 (B) 10 (C) 30 (D) 50

Last Answer : (A) 1

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 method of alighting the aeroplane on water during a ditching is to: a. Carry out a normal approach with flaps and gear selected as normal but to calculate all speeds plus 10kts b. Reduce the approach angle to 1.5deg (150ft/mile), add 15kts to all speeds, keep the aeroplane clean (no flaps or gear) and fly it into the surface c. Fly a normal approach but keep the gear up and land at lowest possible speed with the nose raised for the tail to strike first d. Fly a normal approach to stalling speed and then drop the aeroplane vertically onto the water

Description : The method of alighting the aeroplane on water during a ditching is to: a. Carry out a normal approach with flaps and gear selected as normal but to calculate all speeds plus 10kts b. Reduce ... d. Fly a normal approach to stalling speed and then drop the aeroplane vertically onto the water

Last Answer : c. Fly a normal approach but keep the gear up and land at lowest possible speed with the nose raised for the tail to strike first

The instruction “ORBIT” from ATC means that the aircraft should: a. Carry out a go around b. Continue with 360 degree turns c. Carry out one 360 degree turn only d. Reverse the direction of the turn

Description : The instruction “ORBIT” from ATC means that the aircraft should: a. Carry out a go around b. Continue with 360 degree turns c. Carry out one 360 degree turn only d. Reverse the direction of the turn

Last Answer : c. Carry out one 360 degree turn only

The transition from IFR to VFR is done: a. On the Captain’s initiative b. Whenever an aircraft in VMC leaves controlled airspace c. If told by ATC d. At the clearance limit, disregarding the weather situation

Description : The transition from IFR to VFR is done: a. On the Captain’s initiative b. Whenever an aircraft in VMC leaves controlled airspace c. If told by ATC d. At the clearance limit, disregarding the weather situation

Last Answer : a. On the Captain’s initiative

The transition from IFR to VFR is done: a. On the Captain’s initiative b. Whenever an aircraft in VMC leaves controlled airspace c. If told by ATC d. At the clearance limit, disregarding the weather situation

Description : The transition from IFR to VFR is done: a. On the Captain’s initiative b. Whenever an aircraft in VMC leaves controlled airspace c. If told by ATC d. At the clearance limit, disregarding the weather situation

Last Answer : a. On the Captain’s initiative

Disorientation is more likely when the pilot is: 1. flying in VMC 2. frequently changing between inside and outside references 3. flying from IMC to VMC 4. approaching over still water at night a. 1, 2 & 3 only are correct b. 1, 2 & 4 only are correct c. 1, 2, 3 & 4 are correct d. 1 only is correct

Description : Disorientation is more likely when the pilot is: 1. flying in VMC 2. frequently changing between inside and outside references 3. flying from IMC to VMC 4. approaching over still water at night a. 1, 2 & ... 1, 2 & 4 only are correct c. 1, 2, 3 & 4 are correct d. 1 only is correct

Last Answer : b. 1, 2 & 4 only are correct

What radius from a terminal VOR is MSA provided? a. 25nm b. 10nm c. 15nm d. 15km

Description : What radius from a terminal VOR is MSA provided? a. 25nm b. 10nm c. 15nm d. 15km

Last Answer : a. 25nm

A precision Approach Procedure is defined as: a. An approach using bearing, elevation and distance information b. An approach with a crew of at least 2 pilots trained for such operations c. An instrument approach procedure utilizing azimuth and glide path information provided by an ILS or a PAR

Description : A precision Approach Procedure is defined as: a. An approach using bearing, elevation and distance information b. An approach with a crew of at least 2 pilots trained for such ... An instrument approach procedure utilizing azimuth and glide path information provided by an ILS or a PAR

Last Answer : c. An instrument approach procedure utilizing azimuth and glide path information provided by an ILS or a PAR

Motor name plate data includes '°°C rise'. This indicates the _____________. A. actual running temperature of the winding from no load to full load B. permissible temperature rise of the windings above the designed ambient temperature C. maximum allowable temperature rise above normal full load operating temperature D. maximum allowable temperature rise for continuous no load service

Description : Motor name plate data includes '°°C rise'. This indicates the _____________. A. actual running temperature of the winding from no load to full load B. permissible temperature rise ... above normal full load operating temperature D. maximum allowable temperature rise for continuous no load service

Last Answer : Answer: B

Standard air is the: a. Mass of 1 cubic meter of dry air at 20°C and atmospheric pressure b. Mass of a cubic meter of air at atmospheric conditions c. Volume of air at ambient temperature and atmospheric pressure d. Volume of 1 kg of dry air at 21°C and atmospheric pressure at sea level or 101.325 kPa e. Volume of 1 kg of air at 15°C and 100 kPa

Description : Standard air is the: a. Mass of 1 cubic meter of dry air at 20°C and atmospheric pressure b. Mass of a cubic meter of air at atmospheric conditions c. Volume of air at ambient temperature and atmospheric pressure ... pressure at sea level or 101.325 kPa e. Volume of 1 kg of air at 15°C and 100 kPa

Last Answer : Answer: D

A supercharger is used in the engines of earthmoving machines at higher altitudes because (a) The ambient atmospheric pressure is less at higher altitudes (b) Four-cycle engines depend on the suction of the engines for the supply of air (c) Two-cycle engines are not rugged enough for higher altitude (d) The ambient temperature is less as the altitude is higher

Description : A supercharger is used in the engines of earthmoving machines at higher altitudes because (a) The ambient atmospheric pressure is less at higher altitudes (b) Four-cycle engines depend on the suction ... rugged enough for higher altitude (d) The ambient temperature is less as the altitude is higher

Last Answer : (a) The ambient atmospheric pressure is less at higher altitudes

Inside an aeroplane flying at a high altitude, (a) the pressure is the same as that outside (b) normal atmospheric pressure is maintained by the use of air pumps (c) the pressure inside is less than the pressure outside (d) normal humidity and partial vacuum are maintained

Description : Inside an aeroplane flying at a high altitude, (a) the pressure is the same as that outside (b) normal atmospheric pressure is maintained by the use of air pumps (c) the pressure inside is less than the pressure outside (d) normal humidity and partial vacuum are maintained

Last Answer : Ans:(b)

The advantage of a constant speed propeller over a fixed pitch propeller is: a. Higher maximum thrust available b. Higher maximum efficiency c. More blade surface area available d. Nearly maximum efficiency over wide speed range

Description : The advantage of a constant speed propeller over a fixed pitch propeller is: a. Higher maximum thrust available b. Higher maximum efficiency c. More blade surface area available d. Nearly maximum efficiency over wide speed range

Last Answer : d. Nearly maximum efficiency over wide speed range