Top 80+ Solved Magnetic Particle Testing Level 2 MCQ Questions Answer
Q. Compared to the magnetic field strength at the outer surface, the magnetic field strength,at the centre of a hollow, nonmagnetic conductor carrying DC current is:
a. I/D
b. The same
c. Zero
d. Need more information to determine
Q. Which of the following describes the shape of particles used for dry magnetic particletesting?
a. Spherical
b. Angular
c. Elongated
d. Mixture of elongated and globular
Q. Which of the following particles would be most sensitive?
a. Wet
b. Dry
c. Depends on the test piece permeability
d. None of the above
Q. Which of the following colours is readily available for magnetic particle test powder?
a. Red
b. Gray
c. Black
d. All of the above
Q. A magnetic particle testing technique in which the test piece is magnetised andmagnetic particles applied after the magnetising force has been removed is called the:
a. Magnetic method
b. Continuous method
c. Residual method
d. Discontinuous method
Q. Which of the following characteristics would be most important in a test piece whichis to be tested using the residual method?
a. High rententivity
b. High permeability
c. Low reluctance
d. Low permeability
Q. The wet method is superior to dry particles for detecting:
a. Subsurface discontinuities
b. Fine surface cracks
c. Open surface cracks
d. None of the above
Q. Selection of magnetic particle colour is based on:
a. Optimum performance of magnetic particle/developer
b. Colour of inspection light available
c. Obtaining maximum contrast with the test piece background
d. Optimum colour response of the human eye
Q. Which of the following is not a property of magnetic lines of force?
a. They form closed loops which do not cross
b. The density increases with distance from the poles of a permanent magnet
c. Hey are considered to have direction
d. They seek paths of least magnetic resistance or least reluctance
Q. Surrounding an electromagnet, the magnetic field is strongest:
a. Immediately after the current ceases to flow
b. While the magnetizing current ceases to flow
c. At the time the magnetic particles are applied to the part
d. Just prior to current reversal
Q. The value of permeability is:
a. A fixed value depending upon the type of material
b. Between 1 and 100 for all ferromagnetic materials
c. Between 0 and 10 for all ferromagnetic materials
d. Dependent upon the amount of magnetizing force necessary to overcome
Q. The flux density of the magnetism induced by a coil is affected by:
a. The coil size
b. The current in the coil
c. The number of turns in the coil
d. All of the above