Top 150+ Solved Magnetic Particle Testing Level 1 MCQ Questions Answer
Q. Magnetic particles testing is most likely to find subsurface discontinuities in:
a. Soft steels with high permeability
b. Soft steels with low permeability
c. Hardened steels with low permeability
d. Hardened steels with high permeability
Q. Which of the following is not an advantage of magnetic particles testing?
a. Fast and simple to perform
b. Can detect discontinuities filled with foreign material
c. Most reliable for finding surface cracks in all types of material
d. Works well through a thin coat of paint
Q. The most effective NDT method for locating surface cracks in ferromagnetic materialsis:
a. Ultrasonic testing
b. Radiographic testing
c. Magnetic particle testing
d. Liquid penetrant testing
Q. Which of the following may cause magnetic particle test indications?
a. A joint between two ferromagnetic materials of different permeability
b. A shrink fit joint in ferromagnetic materials
c. A brazed joint in ferromagnetic materials
d. All of the above
Q. Opposition to establishment of a magnetic field is called:
a. Reluctance
b. Retentivity
c. Permeability
d. Electromagnetism
Q. A leakage field is strongest when a discontinuity interrupts the magnetic flux lines atan angle of:
a. Zero degrees
b. 45 degrees
c. 90 degrees
d. 180 degrees
Q. Which of the following does not represent a limitation of magnetic particle testing?
a. The type of materials which may be effectively tested
b. The directionality of the magnetic field
c. The need for demagnetization
d. The ability to detect discontinuities filled with foreign material
Q. A discontinuity which is produced during solidification of the molten metal is called:
a. Inherent
b. Processing
c. Service
d. None of the above
Q. Pipe would be classified as what type of discontinuity?
a. Inherent
b. Processing
c. Service
d. None of the above
Q. A seam would be classified as what type of discontinuity?
a. Inherent
b. Processing
c. Service
d. None of the above
Q. A lamination in steel plate would be classified as what type of discontinuity?
a. Inherent
b. Processing
c. Service
d. None of the above
Q. An internal rupture caused by working steel at improper temperatures is called a:
a. Lap
b. Cold shut
c. Forging burst
d. Slag inclusion
Q. Cracks which are caused by alternating stresses above a critical level are called:
a. Stress corrosion cracks
b. Cycling cracks
c. Critical cracks
d. Fatigue cracks
Q. Cracks which are caused by a combination of tensile stress and corrosion are called:
a. Stress corrosion cracks
b. Cycling cracks
c. Critical cracks
d. Fatigue cracks
Q. Which of the following are ferromagnetic materials?
a. Aluminium, iron, copper
b. Iron, copper, nickel
c. Copper, aluminium, silver
d. Iron, cobalt, nickel