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Questions for KW ENGINE MONITORING

Answer the following questions

1. On what principles does a vibration meter work?
2. A system which measures both torque and engine RPM employs?
3. The probe used to measure the air intake pressure of a gas turbine engined powerplant is?
4. A mainfoid pressure gauge of piston engine measures?
5. Torque in a turbo-prop engine is indicated in? 1. Newton meters. 2. %. 3. PSI. 4. EPR. 5. Lbf ft.
6. The electronic tachometer sensor is composed of?
7. Different pressure sensor are used according to the Intensity of the pressure measured (low, medium or high). Classify the following sensors by order of increasing pressure for which they are suitable? 1. Bellows type. 2. Bourdon tube type. 3. Aneroid capsule type.
8. Which of the following is used to measure temperature? 1. The seebeck effect. 2. the variation of electrical resistance with changes in temperature. 3. The variation of capacitance with changes in temperature. 4. Thermal expansion of liquids and solids.
9. The operating principle of an "electronic" tachometer is to measure the?
10. The Engine Pressure Ratio (EPR) is computed by?
11. The pointer that aligns with the red line on a EGT gauge?
12. The green sector of the arc of a temperature gauge corresponds to?
13. What type of sensor is employed to measure compressor air inlet temperature in a typical turbojet engine fuel system?
14. If one of the probes in a typical gas turbine engine EGT system becomes defective, the indications would be?
15. Temperature is measured in aircraft engine by means of? 1. Thermocouples, 2. Mercury. 3. Resistive elements. 4. Capacitive elements.
16. Arrange the following sensors in increasing order of the pressures they would be used to sense? 1. Capsule, 2. Bellows. 3. Bourden tube.
17. If a manifold pressure gauge consistently registers atmospheric pressure, the cause is probably?
18. A temperature gauging system employing thermocouples can be graduated to indicated temperature by?
19. Cylinder head temperature measurement system typically work on the _________ principle?
20. EPR is calculated by?
21. The RPM Indicator (or tachometer) of a piston engine can Include a small red are within the arc normally used (green arc). In the RPM range corresponding to this small red arc the?
22. In an engine vibration monitoring system for a turbojet any vibration produced by the engine is?
23. A remote sensing pressure gauging system measuring low pressures, typically employs a ________ to move _________ The variation in ________ are then measured using a _________ or ___________?
24. Where is EGT measured?
25. A millimetric voltmeter measuring the PD across the hot and cold junctions of a thermocouple, can be calibrated to indicate temperature by?
26. What type of sensors are typically used to measure engine oil temperature?
27. The disadvantages of a single-phase A.C. generator tachometer are: 1. The pressure of spurious signals due to D.C. generator commutator. 2. The importance of line resistance on the information value. 3. The influence of temperature on the techometer information. The combination regrouping all the correct statements is?
28. The signal supplied by a transmitter fitted with a magnetic sensor, connected to an RPM indicator is a three-phase voltage frequency varies with RPM?
29. The electrical supply for a basic thermocouple system is?
30. Typical vibration sensors include? 1. Inductive coils. 2. Phonic wheels.3. Magnetometers. 4. Piezo crystals.
31. A full Authority Digital Engine Control (FADEC) has the following functions : 1. Flow regulation (fuel, decelerations and accelerations monitoring). 2. Automatic starting sequence. 3. Transmissions of engine data to the pilot's instruments. 4. Thrust management and protection of operation limits. 5. Monitoring of the thrust reversers. The combination regrouping all the correct statement is?
32. A turbocharged piston has a rated boost of 10 PSI and critical altitude of 15000 ft amsl ISA. If the aircraft is at a pressure altitude of 10000 ft climbing at rated power, what will be is its MAP?
33. In a 3-phase synchronous motor type tachometer indicator : 1. The transmitter is a direct current generator. 2. The voltage is proportional to the transmitter drive speed. 3. The frequency is proportional to the transmitter drive speed. 4. The speed indicating element is a galvanometer. 5. The speed indicating elements is a synchronous motor driving a magnetic tachometer. The combination regrouping all the correct statements is?
34. Which of the following is least affected by variation in power supply voltage?
35. A millivolmeter measuring the electromotive force between the "hot junction " and the "cold junction" of a thermocouple can be directly gradusted in temperature values provided that the temperature of the?
36. Vibration meters measure?
37. To permit turbine exit temperatures to be measured, gas turbines are equipped with thermometers which work on the following principle?
38. The advantages of single-phase A.C. generator tachometer are: 1. The suppression of spurious signal due to a D.C. generator commutator. 2. The importance of line resistance on the information value. 3. The independence of the information in relation to the airborne electrical power supply. 4. The ease of transmission of the information. The combination regrouping all the correct statement is?
39. Cylinder head temperature on a piston engine is measured using a _________ on the ________?
40. Torque can be determined by measuring the?
41. The advantage of a D.C. generator tachometer are: 1. Easy transmission of the information. 2. Independence of the information relative to the airborne electrical power supply. 3. Freedom from any spurious current due to the commutator. The combination regrouping all the correct statements is?
42. A capsule stack would be used to measure ___________ pressure when a ________ mechanical output for a given pressure change was required?
43. The advantages of an electrical induction tachometer are: 1. The display is not sensitive to line resistance. 2. The measurement is independent of aircraft power supply. 3. The measurement is independent of temperature variations. 4. The option to use without restriction several Indicators connected in parallel to a single transmitter. The combination regrouping all the correct statements is?
44. The signal supplied by a transmitter fitted with a 3-phase AC generator, connected to RPM indicator, is a DC voltage varying with the RPM?
45. What does the amber are on an EGT gauge indicate?
46. What type of sensor is normally used to measure inlet air temperature where the signal is to be employed for altitude compensation in a conventional (non FADEC) engine fuel system?
47. A thermocouple type themometer consists of?
48. If a remote sensing pressure measurement system uses a ratiometer rather than an ammeter as its indicator, it will be?
49. Turbine outlet pressure is detected by?
50. The two main sources of information used to calculate turbojet thrust are the?