standard 3

What is the approximately air pressure at sea level?. 14.7 PSI. 29.92 PSI. 1013 PSI.

Nitriding is a process by with?. A hard inner surface is formed on a cast steel alloy. A hard outer surface is formed on a cast steel alloy. A surface is formed on a cast steel alloy.

How can best be detected the intergranular corrosion?. By Eddy current inspection (ultrasonic). Magnetic particles. X-ray.

What type of load will be subject two pieces of aluminum riveted correctly together?. Shear loads. Cut loads. Twisting loads.

The number 9 is represented by which binary digits?. 1001. 1101. 1011.

What is the diameter of the rivet MS 20430-4-8?. 1/8 diameter. 1/32 diameter. 1/16 diameter.

What type of bolt would have a stamped a X on the head?. NAS close tolerance bolt. MIL close tolerance bolt.

What is the recommended rivet spacing?. 3 x the diameter of the rivet. 4 x the diameter of the rivet. 2 1/2 x the diameter of the rivet.

What aluminum alloy has the best strength to weight ratio?. Magnesium / aluminum. Copper / aluminum.

Tensile strength is measured in?. Thousands of LBS per square inch. hundreds of LBS per square inch.

How is called the characteristic of a metal which allows it to be permanently deformed?. Malleability. Ductibility.

How is called the sharpest angle you can bend sheet metal?. Minimum bend radius. Medium bend radius.

How many threads can be exposed on a turn buckle to be in safety?. No more than 3 threads on either end. No more than 4 threads on either end. No more than 5 threads on either end.

How is called metal’s resistance to tearing?. Toughness. Ductility. Hardness.

What NDT method would indicate a defect by a blip on a screen?. Ultrasonic inspection. X-ray.

What kind of light is used for a dye penetrant inspection?. Black light. Red light.

What is a set back?. Bend radius + metal thickness. Bend radius + metal type.

What is the hardest aluminum alloy?. Zinc 1000 series 12. Magnesium 3000 series 15.

How much slack does a flex line require?. 5% - 8%. 15% - 25 %.

What are the two types of AN fittings used on A/C?. Tube + Pipe. Countersign + flat head.

What type of load should a rivet take on a properly designed joint?. Shear and tension. Compression.

Proper riveting will have what forces on it?. Shear. Tension. Compression.

What is the tolerance for dents in fluid tubes?. Less than 20% of diameter and not in heel of bend. Less than 8% of diameter and not in heel of bend. Less than 10% of diameter and not in heel of bend.

What type of head is AN 470?. Univelsal. Countersunk. Flat head.

What type of head is AN 426?. Countersunk. Universal. Flat head.

What is ductility?. Ability of metal to be pulled and thinned without rupture. Ability of metal to get shape. Ability to resist stretching or lengthening.

What is tensile strength?. Ability to resist stretching or lengthening. Ability of metal to be pulled and thinned without rupture.

What is the definition of normalizing?. Form of heat treatment where heated cooled in dry air relieving internal stresses. Form of heat treatment where heated cooled in oil relieving internal stresses. Form of heat treatment where heated cooled in water relieving internal stresses.

What is precipitation heat treatment?. Aluminum heat treating where it’s heated + quenched then re-heated and held for a period. Aluminum heat treating where it’s heated.

What is the difference between AC and DC magnetizing in NDT?. AC – Is surface strength DC – Is more thorough or deeper. DC – Is surface strength AC – Is more thorough or deeper.

What is the definition of strain?. Deformation in material caused by stress. Deformation in material caused by heat.

What is kinetic energy?. Energy of motion. Stored energy.

What is potential energy?. Stored energy. Energy of motion.

What is the Bernoulli’s principle?. When the velocity increases, pressure decreases When the velocity decreases, pressure increases. When the velocity decreases, pressure decreases When the velocity increases, pressure increases.

What is the rating in ampere/hour of a 7 ampere for 5 hours battery?. 35 amp/hour. 35 watt.

Figure the problem with these logic gates: Y = A . B + A . B . -C + -A . B. Y = A . B + A . B . C + A . B.

Formula for indicated horse power plank: P – Indicated pressure L – Length of stroucke A – Area of piston N – N° power strouck K – N° of cylinder. P – pressure L – Length A – Area of piston N – N° power rpm K – N° of cylinder.

What are the characteristics of reciprocating engine?. Low weight and high power efficient. Low weight and high fuel consumption.

How many sides orthographic drawing shows?. 6. 4. 3.

What type of bearing is designed to take a radial load?. Straight roller. Ball.

What type of steel is heat treatable?. Magnetic. Ferrous. Stainless.

What is the term for the leading edge of the mean aerodynamic chord?. Lemac. Temac. Mac.

Where is the weight installed on a flight control?. Forward of the hinge center line. Aftward of the hinge center line. Hinge center line.

What is the equivalent of one BTU?. 778 FT LBS. 763 FT LBS.

What method is used which form a spherical impression into the surface of the metal?. Brinell tester. Rockwell.

What is the % of material contained in Monel?. 68% nickel, 29% copper, 0.2% iron, 1% manganese and 1.8% of other elements. 70% nickel, 26% copper, 0.2% iron, .8% manganese and 3% of other elements.

What is the normal quenching media for steel?. Brine. Rockwell.

What does precipitation heat treating?. Greatly increases strength plus hardness, artificial age hardening. Increases strength, artificial age hardening.

When bending a piece of sheet metal, how should the bend be made with respect to the grain of the material?. Bends should be made across the grain (perpendicular). Bends should be made same direction of the grain (parallel).

How do you call the line at which the metal starts to bend and the line at which the metal stops bending?. Bend tangent line. Radius bend.