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CPL Test Series
Question Bank
Questions for AIR SPEED INDICATOR
Answer the following questions
Test Mode
Training Mode
1. Dynamic pressure is equal to:
½ (ρv) 2
(½ ρv) 2
½ ρv2
½ vρ2
2. The airspeed indicator is calibrated to:
indicate correctly in any atmosphere.
conditions of the International Standard Atmosphere.
conditions of the International Standard Atmosphere at MSL.
an air density of 1013.25 gms/m3.
3. Some ASIs have coloured arcs and lines marked on their dials. A yellow arc and a white arc indicate:
flap operating speed range and normal operating range.
cautionary range and flap operating speed range.
cautionary range and normal operating range.
flap operating speed range and cautionary range.
4. 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
TAS will decrease.
EAS will increase.
TAS will increase.
CAS will decrease.
5. If the pitot line to an ASI becomes totally blocked during a climb, the ASI reading will
stick at the airspeed showing at the moment of blockage.
increase, no matter what the actual airspeed is.
decrease, no matter what the actual airspeed is.
progressively under indicate the value of the airspeed
6. If the static line to the ASI becomes blocked during a climb, the ASI reading will:
progressively over indicate the value of airspeed.
progressively under indicate the value of airspeed
increase, no matter what the actual airspeed is.
stick at the airspeed showing at the moment of blockage.
7. What will be the TAS if cruising altitude is 39 000 ft, temperature is ISA +5 and CAS 200 kt:
364 kt
383 kt
388 kt
370 kt
8. Compressibility error:
causes overreading of the ASI whenever CAS exceeds 300 kt.
is calibrated out of the ASI at MSL ISA conditions and only causes overreading when air density is decreased and CAS exceeds 300 kt.
causes overreading of the ASI at all levels whenever TAS exceeds 300 kt.
is calibrated out of the ASI at MSL ISA conditions and only causes overreading when air density is decreased and TAS exceeds 300 kt.
9. If the static line to the ASI becomes blocked during a long descent, a dangerous situation could arise due to the ASI
underreading, this indicated speed falsely showing the aircraft to be closer to the stalling speed than it actually is.
overreading, this indicated speed possibly leading to the operation of flaps and/or landing gear at speeds in excess of safety speeds.
underreading, this indicated speed possibly leading to the operation of flaps and/or landing gear at speeds in excess of safety speeds.
overreading, this indicated speed falsely showing the aircraft to be further from the stalling speed than it actually is.
10. Excluding blockages, the full list of errors of the ASI is
instrument error, position error, temperature error, compressibility error, manoeuvre induced error.
instrument error, position error, density error, manoeuvre induced error.
instrument error, position error, density error, compressibility error, manoeuvre induced error.
instrument error, position error, barometric error, temperature error, lag, manoeuvre induced error.
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