Results
Q1. How many diaphragms are present in a basic Mach meter?
Two.
Q2. If the outside temperature at 35 000 feet is -40°C, the local speed of sound is:
596 kt.
Q3. A VMO-MMO warning device consists of an alarm connected to:
a barometric aneroid capsule subjected to a static pressure and an airspeed sensor subjected to a dynamic pressure.
Q4. What is the Mach number?
It is the ratio of the aircraft’s true airspeed to the local speed of sound of the air in which the aircraft is moving.
Q5. At a constant Mach number, the calibrated air speed (CAS):
decreases when the altitude increases
Q6. During a straight and uniform climb, the pilot maintains a constant calibrated airspeed (CAS):
The Mach number increases and the true airspeed (TAS) increases.
Q7. The velocity of sound at the sea level in a standard atmosphere is:
661 kt.
Q8. The Mach number is:
the ratio of the aircraft true airspeed to the sonic velocity at the altitude considered
Q9. Indication of Mach number is obtained from:
Indicated speed and altitude using a speed indicator equipped with an altimeter type aneroid
Q10. The mach number is the:
true airspeed (TAS) divided by the local speed of sound
Q11. The principle of the Mach indicator is based on the computation of the ratio:
(Pt-Ps) to Ps
Q12. The reading of a Mach indicator is independent of:
the outside temperature
Q13. An aircraft is flying at an TAS of 310 Kt at FL290, temperature deviation is -6°C. The local speed of sound is:
583 Kt
Q14. Sound propagates through the air at a speed which only depends on:
temperature.
Q15. The Mach number is a function of the:
Absolute temperature of the air.
Q16. At a constant calibrated airspeed (CAS), the Mach number:
increases when the altitude increases
Q17. If the ambient temperature decreases, the TAS of an aircraft cruising at a constant Mach number will:
decrease because local speed of sound decreases
Q18. Machmeter readings are subject to:
position pressure error
