Flux density is a measure of the number of magnetic flux lines perpendicular to an area of cross-section. If a discontinuity is in the plane of the unit area, the strongest magnetic article indication will be formed when the discontinuity is:

Related MCQs

• A leakage field is strongest when a discontinuity interrupts the magnetic flux lines at an angle of:
• A leakage field is strongest when a discontinuity interrupts the magnetic flux lines at an angle of:
• A magnetic particle build-up from a discontinuity is strongest when the discontinuity is oriented:
• A radiograph is made using film X with an exposure of 10 mA-min. Film density obtained in the area of interest is 1.0. If it is desired to achieve a density of 2.0 in the area of interest, what exposure is required? (Log relative exposure = 1.1 for a density of 1.0 and 1.62 for a density of 2.0)
• A radiograph is made using film X with an exposure of 10 mA-min. Film density in the area of interest is 1.0. If it is desired to achieve a density of 2.0 in the area of interest, what exposure is required? (Log relative exposure = 1.1 for a density of 1.0 and 1.62 for a density of 2.0)
• In a radiograph of a weld there is an indication appearing at the end of the weldbead. It appears as a dark rounded indication with fine small tails coming from around the rounded indication giving it some what of a star-shaped appearance. This would probably be:
• Magnetic lines of flux which are parallel to a discontinuity produce:
• A dark, jagged, linear indication appears on a radiograph of a casting. The area is a transition area between a thick and a thin section. This indication should be interpreted as:
• A magnetic particle indication is sharp and very fine; this suggests that the discontinuity is:
• A smooth flat discontinuity whose major plane is not perpendicular to the direction of sound propagation may be indicated by: