AIR TEMPERATURE MEASUREMENT – Air – DGCA Question Bank For Politics

#1. Converted into degrees Celsius - 40°F is:

-56.5°C

-40°C

-20°C

-108°C

#2. In an aircraft thermometer with an electrical resistance sensor to measure the air temperature, the resistance wire element is probably:

plutonium

platinum

potassium

beryllium copper

#3. Flying at high speed at high altitude, the difference between ram air temperature and static air temperature is:

likely to be less than when flying low and slow.

due to adiabatic cooling.

due to adiabatic warming.

proportional to the square of the absolute temperature.

#4. Aircraft air temperature thermometers are shielded to protect them from:

solar radiation.

accidental physical damage on the ground or hailstones in flight.

airframe icing.

kinetic heating.

#5. At a true airspeed of 500 knots, a ram rise of air temperature can be expected of:

50°C

25°C

5°C

15°C

#6. An air temperature probe may be aspirated in order to:

prevent icing.

measure air temperature on the ground.

compensate for thermal soaking at the ramp position.

reduce the effect of solar radiation.

#7. Total Air Temperature is:

the maximum temperature attainable by the air when brought to rest, adiabatically.

the temperature indicated on the air temperature thermometer plus the ram rise.

the static air temperature minus the recovery factor.

the recovery factor plus the ram rise.

#8. The difference between static air temperature and total air temperature is known as:

corrected outside air temperature.

the ram rise.

the recovery factor.

hot ramp radiation.

#9. A direct reading aircraft thermometer usually consists of a bimetallic helix protruding into the airstream. Movement of the pointer over the temperature scale will depend upon:

difference in electrical resistance of the two metals.

increase in pressure as airspeed increases.

increase in adiabatic cooling as airspeed increases.

different coefficients of expansion of the two metals.

#10. A remote reading thermometer depends upon ....... to indicate changes in temperature:

change of electrical resistance of the two metals.

change of electrical resistance with temperature.

change of electrical resistance with change in pressure.

change of electrical capacitance with change in temperature.

Dgca Question Bank For Pilots

Results