Avielevate / DGCA CPL papers / Air Navigation / Measurement of DR Elements: Pressure & Altimetry
Measurement of DR Elements: Pressure & Altimetry — DGCA CPL Air Navigation
Chapter GN10 of the Air Navigation paper. 52 practice questions in the Avielevate bank, every one with its answer key, filterable into a timed set on this chapter alone.
What this chapter covers
The learning objectives we file Measurement of DR Elements: Pressure & Altimetry questions under, and how many sit behind each. These come straight out of the bank and are regenerated whenever it changes — they are what is there today, not a claim.
| Learning objective | In the bank |
|---|
| __GEN__ General | 52 questions |
Sample Measurement of DR Elements: Pressure & Altimetry questions, answered and explained
Real questions from this chapter, with the answer marked and the reasoning written out — the same explanations you get inside the app.
0218054 · Measurement of DR Elements: Pressure & Altimetry
If pressure increases whilst temperature increases in the ISA...... density?
- Aincrease
- Beither increase or decrease
- Cstay the same
Why that is the answer
In the ISA, pressure and temperature both increase only when you **descend**.
As you go lower, the pressure increase has a much bigger effect on density than the temperature increase. That is why the air is always denser near the ground in the standard atmosphere.
So in the ISA, when pressure and temperature both increase, **density increases**.
0218083 · Measurement of DR Elements: Pressure & Altimetry
How can the pressure altitude of an airfield be found?
- ABy setting QNH on the altimeter subscale
- BBy setting QFE on the altimeter subscale
- CBy setting 1013 hPa on the altimeter subscale
Why that is the answer
**Pressure altitude** is the height above the **1013 hPa** pressure level, the standard datum of the ISA. It is the height the aircraft "feels" in terms of pressure, and it is used for flight levels and performance charts.
An altimeter always shows the height above whatever pressure is set on its subscale. Look at the diagram: set QFE and it reads 0 on the runway; set QNH and it reads the elevation; set **1013 hPa** and it reads the height above the 1013 hPa level.
So on the ground, the pressure altitude of an airfield is found **by setting 1013 hPa on the altimeter subscale** and reading the altimeter.
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Frequently asked
How many Measurement of DR Elements: Pressure & Altimetry questions are there for the DGCA CPL Air Navigation paper?
Avielevate's bank carries 52 published Measurement of DR Elements: Pressure & Altimetry questions for Air Navigation, mapped across 1 learning objective. Every one has its answer key, and explanations are being written across the whole bank.
How much of the Air Navigation paper is Measurement of DR Elements: Pressure & Altimetry?
The DGCA does not publish a per-chapter breakdown of its papers, so nobody can honestly tell you — and we will not guess. What we can tell you is what students who have just sat a paper reported meeting, which is measured rather than rumoured: that is the exam recall report inside the app.
What is the best way to revise Measurement of DR Elements: Pressure & Altimetry?
Sit a short timed set on this chapter alone, tag how sure you were of each answer, then drill the two that actually leak marks: the ones you got right while guessing, and the ones you got wrong while confident. Avielevate does that tagging for you and puts anything you got wrong back in front of you on a spaced schedule.
The rest of the Air Navigation paper
One account covers every chapter of every paper.
← All Air Navigation chapters · All six DGCA CPL papers