Results
Q1. The total air temperature (TAT) is always :
higher than Static Air Temperature (SAT) depending on the Calibrated Air Speed (CAS).
Q2. A thermocouple type thermometer consists of:
two metal conductors of different type connected at one point.
Q3. A thermocouple can be made of:
two metal conductors of different nature fixed together at two points.
Q4. The airplane outside air temperature “probe” measures the :
“total” air temperature minus kinetic heating effects in order to obtain the static temperature.
Q5. The main advantage of a ratiometer-type temperature indicator is that it:
carries out an independent measurement of the supply voltage.
Q6. The measurement of the turbine temperature or of the EGT (Exhaust Gas Temperature) is carried out at the :
high pressure turbine outlet.
Q7. Which of these statements is true?
The probes used for SAT measurements have a recovery factor of 0.75 to 0.90, while the probes used for TAT measurements have a recovery factor of around 1.00.
Q8. Given : M is the Mach number Ts is the static temperature Tt is the total temperature
Ts = Tt /(1+0.2. M²)
Q9. The sensors used to measure the exhaust gas temperature on an airplane equipped with turbojets are:
thermocouples.
Q10. Non-electrical temperature measurements may be done by
all of the above
Q11. In order to measure temperature the cylinder head temperature (CHT) gauge utilises a :
thermocouple consisting of two dissimilar metals.
Q12. The temperature measured by the CHT (Cylinder Head temperature) probe is the :
temperature within the hottest cylinder, depending on its position in the engine block.
Q13. A millivoltmeter measuring the electromotive force between the “hot junction” and the “cold junction” of a thermocouple can be directly graduated in temperature values provided that the temperature of the:
cold junction is maintained constant.
Q14. The measurement of exhaust gas temperature (EGT) is normally based upon the principle of
voltage generation in a thermocouple
Q15. The white sector of the arc of a temperature gauge corresponds to:
a special operating range.
Q16. To permit turbine exit temperatures to be measured, gas turbines are equipped with thermometers which work on the following principle:
thermocouple
Q17. In transport airplanes, the temperatures are generally measured with : 1- resistance thermometers 2- thermocouple thermometers 3- reactance thermometers 4- capacitance thermometers 5- mercury thermometers The combination regrouping all the correct statements is :
1, 2
Q18. The electromotive force of a thermocouple is not modified if one or several intermediate metals are inserted in the circuit provided that:
contact points are maintained at equal temperature between these different metals.
Q19. The yellow sector of the temperature gauge corresponds to:
an exceptional operating range.
Q20. Iron and brass are commonly used in bimetallic thermometers, because
they have two different coefficients of linear expansion.
Q21. The static air temperature (SAT) is :
an absolute temperature expressed in degrees Celsius