More Random Stuff
Unless otherwise specified, the radius of a bend is the
A. inside radius of the metal being formed.
B. inside radius plus one-half the thickness of the metal being formed.
C. radius of the neutral axis plus one-half the thickness of the metal being formed
A. inside radius of the metal being formed.
The oxyacetylene flame for silver soldering should be
A-Carburizing.
B-Neutral.
C- Oxidizing
B-Neutral.
The length of a rivet to be used to join a sheet of .032-inch and .064-inch aluminum alloy
should be equal to
A. two times the rivet diameter plus .064 inch.
B. one and one-half times the rivet diameter plus .096 inch.
C. three times the rivet diameter plus .096 inch.
B. one and one-half times the rivet diameter plus .096 inch.
The shop head of a rivet should be :
A- one-half times the diameter of the manufactured head of the rivet.
B-one and one-half times the diameter of the rivet shank
C-one-half times the diameter of the rivet shank.
B-one and one-half times the diameter of the rivet shank
Which rivet is used for riveting magnesium alloy structures?
A. Mild steel.
B. 5056 aluminum.
C. Monel
B- 5056 Aluminum
The general rule for finding the proper rivet diameter is
A. three times the thickness of the materials to be joined.
B. two times the rivet length.
C. three times the thickness of the thickest sheet.
A. three times the thickness of the materials to be joined.
Color of Oxygen Tank :
A- Brown
B-Green
C-Red
B-Green
. A piece of flat stock that is to be bent to a closed angle of 15° must be bent through an
angle of
A. 165°.
B. 105°.
C. 90°.
A. 165°.
Which of the following need not be considered when determining minimum rivet spacing?
A. Rivet length.
B. Rivet diameter.
C. Type of material being riveted
A. Rivet length.
MS20470AD3-5....
A- 3/16 diamter 5/16 Long
B- 3/32 diameter 5/32 Long
C- 3/32 diameter 5/16 Long
C- 3/32 diameter 5/16 Long
A piece of sheet metal is bent to a certain radius. The curvature of the bend is referred to
as the
A. bend allowance.
B. neutral line.
C. bend radius
C. bend radius
Acetylene at a line pressure above 15 PSI
A- Is usually necessary when welding metal over 3/8 inch thick.
B- Is dangerously unstable.
C- Should be used when a reducing flame is necessary.
B- Is dangerously unstable.
Why is it necessary to use flux in all silver soldering operations?
A- To prevent overheating of the base metal.
B- To increase heat conductivity.
C- To chemically clean the base metal of oxide film.
C- To chemically clean the base metal of oxide film.
What type loads cause the most rivet failures?
A. Shear
B. Bearing.
C. Head
A. Shear
Minimum ED :
A- 2D
B- 3D
C- 6D
A- 2D
K factor of a 90 degree Bend
A-3.14
B-090
C-1
C-1
Filing or grinding a weld bead :
A-Reduces the strength of the joint.
B-May be necessary to avoid adding excess weight or to achieve uniform material thickness.
C- May be performed to achieve a smoother surface
A-Reduces the strength of the joint.
The most important consideration(s) when selecting welding rod is/are
A- Material compatibility.
B- Ambient conditions.
C- Current setting or flame temperature
A- Material compatibility.
What is the minimum spacing for a single row of aircraft rivets?
A. Two times the diameter of the rivet shank.
B. Three times the length of the rivet shank.
C. Three times the diameter of the rivet shank
C. Three times the diameter of the rivet shank
Rivet pitch is the distance between the
A. centers of rivets in adjacent rows.
B. centers of adjacent rivets in the same row.
C. heads of rivets in the same row
B. centers of adjacent rivets in the same row
. The purpose of a joggle is to
A. allow clearance for a sheet or an extrusion.
B. increase obstruction for a sheet or an extrusion.
C. decrease the weight of the part and still retain the necessary strength.
A. allow clearance for a sheet or an extrusion.
Welding over brazed or soldered joints is
A-Not permitted.
B- Permissible for mild steel.
C- Permissible for most metals or alloys that are not heat-treated.
A-Not permitted.
What purpose does flux serve in welding aluminum?
A- Minimizes or prevents oxidation.
B- Ensures proper distribution of the filler rod.
C- Removes dirt, grease, and oil.
A- Minimizes or prevents oxidation.
. Which rivets should be selected to join two sheets of .032-inch aluminum?
A. MS20425D-4-3.
B. MS20470AD-4-4.
C. MS20455DD-5-3
B. MS20470AD-4-4.
MS20426AD 4-4 ..what type of head ?
A- universal
B-Brazier
C- Countersunk
C- Countersunk