Standard Practices 6

What do you use to neutralize a nickel-cadmium battery spill?. Water. Sodium bicarbonate. Cod oil. Boric acid.

What type of current is used with eddy current testing?. AC. DC. Both AC and DC. 400 V.

Which NDT method shows a "blip or pulse" on an oscilloscope?. Computed tomography (CT). X-ray. Eddy current. Ultrasonic.

How would you detect minute cracks using dye-penetrant inspection. Increase the dwell time for the developer. Provide a longer dwell time for the penetrant. Use a non-aqueous developer. If using a water-soluble penetrant, decrease flushing water pressure to 5 psi.

What type(s) of material(s) are tested with magnetic particle inspection (MPI). Non-ferrous metals. Ferro-magnetic materials only. Composites. May be used to detect flaws in billet, welds, or raw material.

Bends in sheet metal are made?. Parallel to the grain. Perpendicular (90°) to the grain. Parallel to sheet marking. Perpendicular to sheet marking.

Which types of hydraulic fluids can be mixed with no problems?. None. vegetable based and synthetic based. synthetic based and skydrol. skydrol and vegetable based.

What is used for small aluminum honeycomb repairs?. Potted compound with fiberglass. None. Metal shavings. Eccobond.

How can you de-magnetize a part after MPI?. Subjecting the part to high voltage, low amperage ac. Use DC only. By using AC only. Use AC or reversing DC.

When using LPI, how long do you apply the developer?. 20 minutes. 25 minutes. 10 minutes. 30 minutes.

When performing LPI, the dry developer is applied?. Right after the rinse and is completely dried. Right after the penetrant has been applied. Right after the rinse. Just before the penetrant is washed off.

Why is the lead used with gamma ray radiography?. Shielding, to absorb the radiation emitted. To expose the film. To decrease the exposure time. Used to reflect refract or focus radiation energy to the material being tested.

What is the best method used for testing for inter-granular corrosion in aluminum?. Ultra-sonic and eddy-current. Magnetic particle. Radiography. Dye-penetrant.

Objects are rinsed after MPI to?. Remove all traces of developer. Rinsing is not required if the Wet Continuous method was used. Remove all traces of metal fillings. To be demagnetized.

What does commercial grade 18-8 steel denote?. 18% chromium and 8% nickel. 18% nickel and 8% chromium. 18% vanadium and 8% chromium. 18% molybdenum and 8% nickel.

One BTU is equivalent to?. 1055J or 778 Ibs./ft. of energy. 1 Calorie or 4.186J. 1 Atmosphere. One horsepower which equals 33,000 Ibs.ft./min.

A force that makes a metal separate at the point of stress is called?. Tension. Shear. Compression. Expansion.

Which NOT requires the least surface preparation?. X-ray. MPI. LPI. Eddy current.

The effective (RMS) voltage of a sine wave can be expressed as?. 2 peak. 0.637 peak. 70.7. 0.707 peak.

To locate the bend tangent line for a 900 bend; What is the point back from the mold line at an equal distance to the bend radius plus metal thickness, called?. Setback. Bend allowance. Mold point. Bend radius.

An non-heat-treatable aluminum alloy, strain hardened and partially annealed, is given what type of temper designation?. H2. T3. O. F.

What size of cable can you perform a woven splice?. 3/32" or greater (7X7 or 7X19 cable) and gives 75% breaking strength. 3/32" or lesser. 1/8" or greater. 3/16 or greater.

What is the formula for power?. P = FD/T. P = FT/D. P = FD2/D. P = F/DT.

What type of hydraulic pump is used in a high pressure system?. Piston type. Gerotor. Constant-displacement type pump. Vane.

A "baseball" stitch is?. A hand-stitch with 1/4" spacing (Min. 4 stitches/in.) and locked every 10 stitches with a half hitch. Used for rib lacing. A hand-stitch with 1/2" spacing locked every 10 stitches. Used for rib lacing with locking stitches.

What is the specific gravity of lead acid electrolyte solution?. 1.275-1.30. 1.200-1.240. 1.400-1.50. 1.250-1.30.