Email
info@vayudootaviation.com
Phone No
+91 7276526726
become a pilot
Home
About us
courses
CPL
ATPL
RTR(A)
Airline Cadet Program
IGRUA Entrance Prep
B.Sc. Aviation
Pilot Training
INDIA
USA
CANADA
SOUTH AFRICA
NEW ZEALAND
EUROPE
Aircraft Type-Rating
Airbus A320
Boeing 737
Blogs
contact
CPL Test Series
Question Bank
Questions for KW MACHMETER
Answer the following questions
Test Mode
Training Mode
1. When descending at constant CAS, the TAT and mach meter indications should?
Increase decrease.
Increase then remain constant decrease.
Increase increase.
Remain constant remain constant.
2. What is the LSS at msl ISA?
661 Kts.
750 Kts.
600 Kts.
550 Kts.
3. How will mach meter indication vary in a constant CAS cilmb?
remain constant.
Decrease.
Increase then remain constant.
Increase.
4. If ambient temperature is -10°C, what is the mach number when TAS in 594 Kts?
0.5M.
0.94M.
0.75M.
1.5M.
5. Mach meter indications?
Are temperature related.
Decrease with temperature.
Are independent of temperature.
Increase with temperature.
6. If the static source becomes blocked the mach meter will ________ as an aircraft climbs?
Over indicate.
Not indicate.
Freeze.
Under indicate.
7. How will the mach meter respond in a constant mach number climb if the static source becomes blocked?
Increase of decrease depending on airspeed.
Increase.
Decrease.
Remain constant.
8. If temperature increases by 5 degrees C during a constant mach number descent, what will happen to CAS?
Increase or decrease depending on whether conditions are above or below ISA.
Increase by 10 Kts.
Increase by 5 Kts.
Remain constant.
9. What is the local speed of sound at sea level if the ambient temperature is 20°C?
677 Kts.
666 Kts.
661 Kts.
680 Kts.
10. The speed of sound at ISA msl is?
660 Kts.
670 Kts.
550 Kts.
560 Kts.
11. VMO is calculated based on?
TAS.
EAS.
CAS.
RAS.
12. A mach meter is made up of?
An altimeter with a density capsule.
An ASI with a modified scale.
A VSI with a modified scale.
An ASI with an altitude capsule.
13. Mach number is the ratio of?
RAS:TAS.
IAS:TAS.
CAS:LSS.
TAS:LSS.
14. What happens to TAT when an aircraft descends at constant indicated mach number?
Increases.
Remains constant then increases.
Remain constant.
Decreases.
15. What is true mach number at 25000 ft ISA the TAS is 500 Kts?
0.90M
0.93M.
0.75M.
0.83M.
16. What would happen if the static pipe became detached from the back of a mach meter in a pressurised aircraft at high altitude?
Under read.
Under read or over read depending on temperature.
Over read.
No effect.
17. The indications on a mach meter are independent of?
Dynamic pressure.
Total pressure.
Ambient temperature.
Static pressure.
18. What is actually measured by a mach meter?
The ratio of (pitot pressure - static pressure) : static pressure.
The ratio of (static pressure + pitot pressure) : pitot pressure.
The ratio of static pressure to dynamic pressure.
Pitot pressure.
19. If an aircraft climbs at constant TAS from FL 200 to FL 400 the mach meter indication will?
Increase then remain constant.
Increase.
Decrease then remain constant.
Decrease.
20. How will mach meter indication respond if an aircraft is flying at constant CAS at FL 270 when it experiences a reduction in OAT?
No change.
Increase or decrease depending on TAT.
Increase.
Decrease.
21. How will CAS respond if temperature increases by 5 degrees C when flying at a constant indicated mach number at FL290?
Depends on conditions relative to ISA.
Remains approximately constant.
Increases.
Decreases.
22. It temperature decreases when flying at constant CAS at FL 200, the mach meter indication will _________ and the true mach number will _________?
Not change not change.
Not change increase.
Decrease decrease.
Increase Increase.
23. Mach meter indications are derived from?
(Ps - Pr)/PT.
(Ps - PT)/Ps.
(Pr - Ps)/Ps.
(Pr - Ps) Pr.
24. When climbing at constant mach number below the torpopause in the ISA, the CAS will?
Remain constant.
Decrease.
Increase.
Decrease then remain constant.
25. A mach meter compares?
(Ps - Pr) to Pr.
(Pr - Ps) to Pr.
(Ps - Pr) to Ps.
(Pr - Ps) to Ps.
26. Mach meter Indications?
Vary only with temperature.
Vary with airspeed and temperature.
Vary only with airspeed.
Vary with density and altitude.
27. What happens to mach meter indication in a constant RAS climb?
Increase unless in an inversion or lsothermal layer.
Decrease.
Increases.
Increase then remains constant.
28. How will mach meter indication respond if an aircraft passes through a cold front when flying at constant CAS and altitude?
Decrease.
Remain constant.
Increase.
Increase or decrease depending on altitude.
29. Which of the following best defines Mach number?
The ratio of TAS:LSS.
The ratio of ambient density to that at msl in the ISA.
The ratio of CAS:LSS.
The ratio of LSS:TAS.
30. How will the mach meter respond in a constant CAS climb if the static source becomes blocked?
Increase of decrease depending on airspeed.
Remain constant.
Increase.
Decrease.
31. A mach meter indicates mach number based on the ratio of?
Pitot pressure to static pressure.
Static pressure to pitot pressure.
Dynamic pressure to static pressure.
Static pressure to dynamic pressure.
32. When descending at constant CAS, if temperature remains constant the indicated mach number will?
Increase exponentially.
Remain constant.
Increase.
Decrease
33. The speed of sound at 25000 ft ISA is?
600 Kts.
606 Kts.
602 Kts.
604 Kts.
34. A mach meter comprises of?
An altimeter with its scale marked in mach numbers.
An ASI with its scale marked in mach numbers.
A combination of VSI and altimeter.
A combination of ASI and altimeter.
35. What is the LSS at 50000 ft in the ISA?
542 Kts.
660 Kts.
550 Kts.
573 Kts.
36. What should the mach meter indicate when flying at 500 kts TAS at FL 250, if the ambient temperature is -30° C?
0.62M.
0.72M.
0.82M
0.52M
37. What is the LSS at 30000 ft if ambient temperature is -40°C?
579 Kts.
584 Kts.
594 Kts.
660 Kts.
38. If ambient temperature increases by 10 degrees, for an aircraft flying at constant TAS, the indicated mach number will ______ and the true mach number will _______?
Not change decrease.
Increase increase
Not change increase.
Decrease decrease.
39. What does mach number represent?
The TAS of an aircraft as a fraction of the local speed of sound.
The local speed of sound as a fraction of the CAS of an aircraft.
The CAS of an aircraft as a fraction of the local speed of sound.
The local speed of sound as a fraction of the CAS of an aircraft.
Submit
Make New Set
