Magnetic Particle Inspection (MPI) Multiple Choice Question & Answer (MCQ)

1. Ferromagnetic material are

(a) Capable of being magnetized
(b) Not capable being magnetized
(c) Attracted by a magnet
(d) Both a & C

...

Answer is (c)

2. Which of the following can be magnetized

(a) Iron
(b) Nickel
(c) a & b both
(d) None of the above

...

Answer is (c)

3. Magnetic particle testing (MPT) is a non destructive examination method used for finding

(a) Surface discontinuities
(b) Subsurface discontinuities
(c) Both a & b
(d) Any discontinuity in the material

...

Answer is (c)

4. A material can be magnetic particle tested if

(a) Material is ferromagnetic
(b) Material is non ferrous
(c) Thermally conductive
(d) Electrical resistive

...

Answer is (a)

5. A material that is difficult to magnetize shall have

(a) High resistivity
(b) High retentively
(c) High permeability
(d) Low permeability

...

Answer is (d)

6. The permeability of a material describe the

(a) Time required magnetizing a part
(b) Ease with which it can be magnetized
(c) Ability of the material to retain the magnetism
(d) none of the above

...

Answer is (b)

7. A work piece may be demagnetized by

(a) AC Coil
(b) Heat treating the material above Curie temperature
(c) Reversing the DC fields
(d) All of the above

...

Answer is (d)

8. Advantage of Magnetic particle testing over Penetrant testing

(a) It can detect sub surface discontinuities
(b) MPI is faster than LPI
(c) Both a & b
(d) none of the above

...

Answer is (c)

9. A magnetic particle built up shall be strong on discontinuity while discontinuity be oriented _______to the magnetic field

(a) 270 Degree C
(b) 90 Degree C
(c) 180 Degree C
(d) 45 Degree C

...

Answer is (b)