The Airspeed Indicator: DGCA Air Navigation questions

Question 1

A leak in the pitot total pressure line of a non-pressurized aircraft to an airspeed indicator would cause it to:

Accepted Answer

Under-read

Answer

Over-read in a climb and under-read in a descent

Answer

Over-read

Answer

Under-read in a climb and over-read in a descent

Question 2

If the static line to the ASI becomes blocked during a long descent, a dangerous situation could arise due to the ASI:

Accepted Answer

Over-reading, this indicated speed falsely showing the aircraft to be further from the stalling speed than it actually is

Answer

Under-reading, this indicated speed falsely showing the aircraft to be closer to the stalling speed than it actually is

Answer

Under-reading, this indicated speed possibly leading to the operation of flaps and/or landing gear at speeds in excess of safety speeds

Answer

Over-reading, this indicated speed possibly leading to the operation of flaps and/or landing gear at speeds in excess of safety speeds

Question 3

An aircraft maintaining a constant CAS and altitude is flying from a cold airmass into warmer air. The effect of the change of temperature on the speed will be:

Accepted Answer

TAS will increase

Answer

CAS will decrease

Answer

EAS will increase

Answer

TAS will decrease

Question 4

Dynamic pressure is equal to:

Accepted Answer

1⁄2 ρV2

Answer

1⁄2 Vρ2

Answer

(1⁄2 ρV)2

Answer

1⁄2 (ρV)2

Question 5

Excluding blockages, the full list of errors of the ASI is:

Accepted Answer

Instrument error, position error, density error, compressibility error, manoeuvre induced error

Answer

Instrument error, position error, density error, manoeuvre induced error

Answer

Instrument error, position error, temperature error, compressibility error, manoeuvre induced error

Answer

Instrument error, position error, barometric error, temperature error, lag, manoeuvre induced error

The Airspeed Indicator: DGCA Air Navigation questions

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