Schließen
1. Electromagnetic testing is one of the oldest testing methods.
a. True
b. False
2. Oersted discoverd that a compass placed near a wire transmitting an electric current tends to set itself perpendicular to the wire.
a. True
b. False
3. Faraday was the first scientist who discovered the effect of electromagnetic induction.
a. True
b. False
4. The first practical system for measurement of flux leakage fields was discovered by Maxwell.
a. True
b. False
5. Eddy current testing is base on the principles of electromagnetic induction.
a. True
b. False
6. Electromagnetic simply means using electricity and sound waves.
a. True
b. False
7. Magnetic flux leakage can be detected using which of the following techniques.
a. Magnetic particle testing (wet or dry)
b. Hall-effect prode
c. Induction coil
d. All of the above
8. The presence of a discontinuity on or near the surface in a test object disturbs the magnetic flux lines and results in a local leakage field aound the discontinuity.
a. True
b. False
9. There are three levels of non-destructive personnel certification: Level 1, Level 2 and Level 3.
a. True
b. False
10. Qualifications on non-destructive testing personnel should involve the following:
a. Training
b. Experience
c. Ability to pass written and practical exams
d. All of the above
