ALTIMETRY – Air – DGCA Question Bank For Politics

#1. MSA given as 12,000 ft, flying over mountains in temperatures +9°C, QNH set as 1023 (obtained from a nearby airfield. What will the true altitude be when 12,000 ft is reached?

11,940

11,148

12,210

12,864

#2. When flying at FL180 in the Southern Hemisphere you experience a left crosswind. What is happening to your true altitude if indicated altitude is constant?

Remains the same

Increasing

Decreasing

Impossible to tell

#3. Flying from Marseilles (QNH 1012) to Palma (QNH 1015) at FL100. You do not reset the altimeter, why would true altitude be the same throughout the flight?

Not possible to tell

Air at Palma is warmer than air at Marseilles

Air at Marseilles is warmer than air at Palma

Blocked static vent

#4. Which of these would cause your true altitude to decrease with a constant indicated altitude?

Cold air/Low pressure

Hot air/Low pressure

Cold air/High pressure

Hot air/High pressure

#5. An aircraft flying in the Alps on a very cold day, RPS 1013 set in the altimeter, flies level with the summit of the mountains. Altitude from aneroid altimeter reads:

Same as mountain elevation

Lower than mountain elevation

Higher than mountain elevation

Impossible to determine

#6. You are flying in an atmosphere which is warmer than ISA, what might you expect?

True altitude to be the same as Indicated altitude

True altitude to be lower than Indicated altitude

True altitude to be the decreasing

True altitude to be higher than Indicated altitude

#7. The QNH is 1030 hPa and at the Transition Level you set the SPS. What happens to your indicated altitude (assume 27 ft per 1 hPa)?

Drops by 459 ft

Rises by 459 ft

No change

Rises

#8. You are flying from Madrid (QNH 1012) to Paris (QNH 1015) at FL 80. If your true altitude and indicated altitude remain the same then

The air at Madrid is warmer than Paris

The air at Paris is warmer than Madrid

The altimeters are incorrect

Your indicated altitude must be changing

#9. If you are flying on a QNH 1009 on very cold day and you circle the top of a peak in the Alps, your altimeter will read

The same as the elevation of the peak

Lower than the elevation of the peak

Higher than the elevation of the peak

Not enough information to tell

#10. How do you calculate the lowest useable flight level?

Lowest QNH and lowest negative temperature below ISA

Lowest QNH and highest negative temperature below ISA

Highest QNH and highest temperature above ISA

Highest QNH and lowest temperature

#11. QNH is 1003. At FL100 true altitude is 10,000ft. Is it

Warmer than ISA

Colder than ISA

Same as ISA

Cannot tell

#12. How is QNH determined from QFE?

Using the temperature of the airfield and the elevation of the airfield

Using the temperature

Using the elevation

Using the temperature at MSL and the elevation of the airfield

#13. Use Annexe A You are on a flight from A to B at 1500 ft. Which statement is true?

True altitude at A is greater than B

True altitude at B is greater than A

True altitude is the same

Cannot tell

#14. QFE is 1000 hPa with an airfield elevation of 200 m AMSL. What is QNH? (use 8 m per hPa)

975 HPa

1025 HPa

1008 HPa

992 HPa

#15. Which of the following is true? QNH is:

Always more than 1013.25 hPa

Always less than 1013.25 hPa

Never 1013.25 hPa

Can never be above or below 1013 hPa

#16. Flying from Marseilles to Palma you discover your true altitude is increasing, but oddly the QNH is identical at both places. What could be the reason?

Re-check the QNH

Re-check the radio altimeter

The air at Palma is warmer

Palma is lower than Marseilles

#17. QNH is 1030. Aerodrome is 200m AMSL. What is QFF?

Higher than 1030

Lower than 1030

Same

Not enough info

#18. If an Aerodrome is 1500ft AMSL on QNH 1038, what will the actual height AGL to get to FL75?

6675 ft

8175 ft

8325 ft

5325 ft

#19. Altimeter set to 1023 at aerodrome. On climb to altitude the SPS is set at transition altitude. What will indication on altimeter do on resetting to QNH?

Dependent on temperature

Decrease

Increase

Same

#20. What temperature and pressure conditions would be safest to ensure that your flight level clears all the obstacles by the greatest margin?

Cold temp/low pressure

Warm temp/high pressure

Temp less than or equal to ISA and a QNH less than 1013

Temp more than or equal to ISA and a QNH greater than 1013

#21. You are flying from Marseilles (QNH 1012 hPa) to Palma de Mallorca (QNH 1012 hPa) at FL100. You notice that the effective height above MSL (Radio Altitude) increases constantly. Hence...

One of the QNH values must be wrong.

You have the altimeters checked, as their indications are obviously wrong.

The air mass above Palma is warmer than that above Marseilles

You have to adjust for a crosswind from the right.

#22. Flying at FL 135 above the sea, the Radio Altimeter indicates a true altitude of 13500 ft. The local QNH is 1019 hPa. Hence the crossed air mass is, on average,

At ISA standard temperature

Colder than ISA

Warmer than ISA

There is insufficient information to determine the average temperature deviation

#23. You are flying in the Alps at the same level as the summits on a hot day. What does the altimeter read?

Same altitude as the summit

Higher altitude as the summit

Lower altitude as the summit

Impossible to tell

#24. An airfield has an elevation of 540ft with a QNH of 993mb. An aircraft descends and lands at the airfield with 1013mb set. What will its altimeter read on landing?

380ft

1080ft

0ft

540ft

#25. When is pressure altitude equal to true altitude?

In standard conditions

When surface pressure is 1013.25mb

When the temperature is standard

When the indicated altitude is equal to the pressure altitude

#26. What is the relationship between QFE and QNH at an airport 50ft below MSL?

QFE = QNH

QFE < QNH

QFE > QNH

There is no clear relationship

#27. You are flying at FL160 with an OAT of -27°C. QNH is 1003 hPa. What is your true altitude?

15,540 ft

15,090 ft

16,330 ft

15,730 ft

#28. Use Annexe B. Flying from D to C at a constant indicated altitude in the northern hemisphere

True altitude increases

Wind is northerly

True altitude decreases

Wind is southerly

#29. Up to FL 180 ISA Deviation is ISA +10°C. What is the actual depth of the layer between FL 60 and FL 120?

6000 ft

6240 ft

5760 ft

5700 ft

#30. Up to FL 180 ISA Deviation is ISA -10°C.What is the actual depth of the layer between FL 60 and FL 120?

6000 ft

6240 ft

5760 ft

5700 ft

#31. What condition would cause your indicated altitude to be lower than that being actually flown?

Pressure lower than standard

Pressure is standard

temperature lower than standard

temperature higher than standard

#32. You fly over the sea at FL 90, your true altitude is 9100 ft and QNH is unknown. What can be said about the atmosphere temperature?

QNH is lower than standard

It is colder than ISA

It is warmer than ISA

Nothing, insufficient information.

#33. You are flying at FL 100 in an air mass that is 15°C colder than ISA. Local QNH is 983 hPa. What would the true altitude be?

8590 ft

11410 ft

10000 ft

10210 ft

#34. Which statement is true?

QFE is always lower than QNH

QNH is always lower than QFE

QNH can be equal to QFE

QFE can be equal to QFF only

#35. You fly from east to west at the 500 hPa level in the Northern Hemisphere;

if the wind is from the north there will be a gain in altitude

if the wind is from the south there is again in altitude

if you encounter northerly drift, there is a gain in altitude

you fly towards an area of lower pressure, and therefore, experience a loss in altitude

#36. You have landed on an airport elevation 1240 ft and QNH 1008 hPa. Your altimeter subscale is erroneously ser to 1013 hPa. The indication on the altimeter will be?

1200 ft

1375 ft

1105 ft

1280 ft

#37. You are cruising at FL 200, OAT is -40°C, sea level pressure is 1033 hPa. Calculate the true altitude?

20660 ft

21740 ft

18260 ft

19340 ft

Dgca Question Bank For Pilots

Results