Questions to 2th credit test
1. Draw and describe principle of a wire strain gauge force sensor.
2. What are the advantages and disadvantages of wire and semiconductor strain
gauges, compare those two types.
3. How do we compensate a strain gauge bridge for temperature variations?
4. Draw and describe principle of Magnetic anisotropy based force sensor.
5. Draw and describe principle of piezoelectric force sensor.
6. Draw and describe principle of capacitive force sensor.
7. Draw and describe principle of strain gauge torque sensor.
8. Draw and describe principle of capacitive torque sensor.
9. Draw and describe principle of bell type manometer.
10. Draw and describe principle of piston type pressure sensor (deadweigth
tester).
11. Draw and describe principle of U-tube manometer.
12. Draw inclined tube manometer and write formula for measured pressure
calculation, what are the advantages and disadvantages of inclined tube
manometer.
13. Draw and describe principle of well type manometer (barometer).
14. Draw and describe principle of Bourdon type deformation manometer.
15. Draw and describe principle of diaphragm manometer (membrane).
16. Draw and describe principle of capacitance thin-film pressure sensor.
17. Draw and describe principle of Pirani gauge.
18. Draw and describe principle of ionisation pressure sensor.
19. Draw and describe principle of LVDT based pressure sensor
20. Draw and describe principle of pressure sensor with electret effect
21. Draw and describe correct placement of pressure sensor for measuring
pressure of clean liquids in pipes.
22. Draw and describe correct placement of pressure sensor for measuring
pressure of hot vapors.
23. Draw and describe correct placement of pressure sensor for measuring
pressure of aggressive liquids.
24. Define absolute and relative humidity and its units.
25. Draw and describe principle of hair hygrometer.
26. Draw and describe principle of chilled mirror hygrometer.
27. Draw and describe principle of psychrometer.
28. Draw and describe principle of dry electrolyte (Al2O3) hygrometer.
29. Draw and describe principle of liquid electrolyte (LiCl) hygrometer
30. Draw and describe principle of resistive position sensor. Draw its steady state
characteristic for K ->  and K = 1. Where is the maximal error ?
31. Draw and describe principle of small air gap inductive position sensor.
32. Draw and describe principle of LVDT (linear variable differential transformer)
position sensor and draw its static characteristic.
33. Draw and describe principle of SELSYN (synchro) position sensor and draw its
static characteristic.
34. Draw and describe principle of inductosyn.
35. Draw and describe principle of inductive position sensor.
36. Draw and describe principle of Eddy current position sensor.
37. Draw and describe principle of Hall position sensor.
38. Draw and describe principle of Spherosyn (relative) position sensor.
39. Draw and describe principle of Spherosyn (absolute) position sensor.
Submission and evaluation of tests:
1. Every teacher submits 5 selected questions
2. Every answer will be marked from 0 to 5 points. The test result can therefore be
between 0 to 25 points.
The student can obtain during the semester:
max. 25 points from TEST1
max. 25 points from TEST2
max. 25 points from TEST3
max. 5 points from MODEL REPORT
max. 20 points from ACTIVITY during lab. exercises (activity points can be both
positive and negative)
The final note from will be calculated as follows.
Note = points from TEST1 + points from TEST2 + points from TEST3 + points from
MODEL REPORT + points from ACTIVITY during lab. exercises.
Note (ECTS)
Points
A
100-90
excellent
B
89-80
very good
C
79-70
good
D
E
F
69-60
59-50
Less than 50
satisfactory sufficient failed