問題一覧
1
A rectangular shaped fuel tank measures 37-1/2 inches in length, 14 inches in width and 8-1/4 inches in depth. How many cubic inches are within the tank?
4331.25
2
What is the ratio of a gasoline fuel load of 200 gallons to one of 1680 pounds?
5:7
3
Find the square root of 3,722.1835
61.0097
4
Find the area of the triangle shown
6 square inches
5
A rectangular-shaped fuel tank measures 60 inches in length, 30 inches in width and 12 inches in depth. How many cubic feet are within the tank?
12.5
6
What is descriptive of the annealing process of steel during after it has been annealed?
Slow cooling; low strength
7
Select the fractional equivalent for a 0.0625-inch- thick sheet of aluminum.
1/16
8
A bolt with an X inside a triangle on the head is classified as an
NAS close tolerance bolt
9
Unless otherwise specified, torque values for tightening aircraft nuts and bolts relate to
Clean, dry threads
10
What method of magnetic particle inspection is used most often to inspect aircraft parts for invisible cracks and other defects?
Continuous
11
Which of the following is a main determinant of the dwell time to use when conducting a dye r fluorescent penetrant inspection?
The size and shape of the discontinuities being looked for
12
On a fillet weld, the penetration requirement includes what percentage(s) of the base metal thickness?
25 – 50 percent
13
Solve the equation (√100 + √36 − √16=
12
14
How many of these factors are considered essential knowledge for x-ray exposure? 1. Processing of the film 2. Material thickness and density 3. Exposure distance and angle 4. Film characteristics
Three
15
Which heat-treating process of metal produces a hard, wear-resistant surface over a strong, tough core?
Case hardening
16
Solve the equation
.0419
17
Convert the binary number 1111 to decimal form.
15
18
What is the surface area of a cube where a side (edge) measures 7.25 inches?
315.375 sq. in.
19
Generally speaking, bolt grip lengths should be
Equal to the thickness of the material which is fastened together
20
What precision measuring tool is used for measuring crankpin and main bearing journals for out-of-round wear?
Micrometer caliper
21
The number 3.47x 10 to the negative fourth power is equal to
000347
22
What is the speed of a spur gear with 42 teeth drive by a pinion gear with 14 teeth turning 420 RPM?
140 RPM
23
What is the piston displacement of a master cylinder with a 1.5 inch diameter bore and a piston stroke of 4 inches?
7.0686 cubic inches
24
A four cylinder aircraft engine has a cylinder bore of 3.78 inches and is 8.5 inches deep. With the piston on bottom center, the top of the piston measures 4.0 inches from the bottom of the cylinder. What is he approximate piston displacement of this engine?
200 cubic inches
25
What is the ratio of 10 feet to 30 inches?
4:1
26
Maximum life for a certain part is 1100 hours. Recently, 15 of these parts were removed from different aircraft with an average life of 835.3 hours. What percent of the maximum part life has been achieved?
75.9 percent
27
Which heat-treating operation would be performed when the surface of the metal is changed chemically by introducing a high carbide or nitride content?
Case hardening
28
What two types of indicating mediums are available for magnetic particle inspection?
Wet and dry process materials
29
Express 7/8 as a percent.
87.5 percent
30
Which of the following is the square root of (-1776)/ (-2)-632?
16
31
If an engine is turning 1,965 rpm at 65 percent power, what is its maximum rpm?
3023
32
Circular magnetization of a part can be used to detect which defects?
Defects parallel to the long axis of the part
33
If dye penetrant inspection indications are not sharp and clear, the most cause is that part
Was not thoroughly washed before the developer was applied
34
A 6 cylinder engine with bore of 3.5 inches, a cylinder height of 7 inches and a stroke of 4.5 inches will have total piston displacement of
259.77 cubic inches
35
A certain aircraft bolt has an overall length of 1-1/2 inches, with a shank length of 1-3/16 inches, and a threaded portio length of 5/8 inch. What s the grip length.
5625 inch
36
Alclad is a metal consisting of
Pure aluminum surface layers on an aluminum alloy core
37
Find the value of 10 raised to the negative sixth power.
0.000001
38
If it is necessary to accurately measure the diameter of a hole approximately ¼ inch in diameter, the mechanic should use a
Small-hole gauge and determine the size of the hole by taking a micrometer reading of the ball end of the gauge
39
Select the decimal which is most nearly equal to 77/64
1.2031
40
Sixty-five engines are what percent of 80 engines?
81 percent
41
Solve the equation. -6[-9(-8+4)-2(7+3)] =
-96
42
The radius of a piece of round stock is 7/32. Select the decimal which is most nearly equal to the diameter.
0.4375
43
How much current does a 30-volt, 1/2 horsepower motor that is 85 percent efficient draw from the bus? (note: 1 horsepower = 746 watts)
14.6 amperes
44
What power of 10 is equal to 1,000,000,000?
10 to the ninth power
45
The result of 7 raised to the third power plus the square root of 39 is equal to
349.24
46
Solve the equation. (-3+2) (-12 – 4)+(-4+6) x3
22
47
Solve the equation
11.9
48
What size of sheet metal is required to fabricate a cylinder 20 inches long and 8 inches in diameter? (note C= pi x D)
20 inches x25-9/64 inches.
49
In examining and evaluating a welded joint, a mechanic should be familiar with
Likely ambient exposure conditions and intended use of the part, along with type of weld and original part material composition
50
Solve the equation. -4+6+103 (√1296) =
36002
51
Which alternative answer is equal to 16,300?
1.63x10 to the fourth power
52
Solve the equation. (32x 3/8) ÷ 1/6 =
72
53
The total piston displacement of a specific engine is
The volume displaced by all the pistons during one revolution of the crankshaft.
54
Which statement relating to the residual magnetizing inspection method is true?
It may be used with steels which have been heat treated for stressed applications
55
Find the square root of 1746
41.7852
56
1.21875 is equal to
39/32
57
What is the speed ratio of an input gear with 36 teeth meshed to a gear with 20 teeth?
1:1.8
58
Which decimal is most nearly equal to a bend radius of 31/64?
0.4844
59
What aluminum alloy designations indicate that the metal has received no hardening or tempering treatment
3003-F
60
Find the cube of 64
262, 144
61
Solve the equation. (64x3/8) ÷ ¾ =
32
62
What is defined as a group of bits representing a complete piece of information?
Byte
63
Solve the equation
-5.20
64
A rectangular shaped fuel tank measures 27-1/2 inches in length, ¾ foot in width, and 8-1/4 inches in depth. How (231 cu in = 1 gal)
8.83
65
Select the fraction which is equal to 0.0250.
1/40
66
Which tool can be used to determine piston pin out- of-round wear?
Micrometer caliper
67
Determine the area of the triangle formed by points A, B and C. A to B=7.5 inches A to D= 16.8 inches
63 square inches
68
Find the square root of 182
.42708x10 to the second power
69
Express 5/8 as a percent
62.5 percent
70
Which statement regarding aircraft bolts is correct?
In general, bolt grip lengths should equal the material thickness
71
What is the speed of a spur gear with 42 teeth drive by a pinion gear with 14 teeth turning 420 RPM?
140 RPM
72
When the specific torque value for nuts is not given, where can the recommended torque value be found?
AC 43. 13-1B
73
An engine of 98 horse power maximum Is running at 75 percent power. What is the horsepower being developed?
73.50
74
Which alternative answer is equal to 5.59?
(√𝟑𝟏) + (√𝟒𝟑) ÷ 𝟏𝟕^2
75
Compute the area of trapezoid
52.5 square feet
76
An engine develops 108 horse power at 87 percent power. What horsepower would be developed at 65 percent power?
81
77
Solve the equation 4- 3[-6(2+3) + 4] =
82
78
The parts department’s profit is 12 percent on a new part. How much does the part cost if the selling rice is $145.60?
$130.00
79
What is the square root of 4 raised to the 5th power?
32
80
In performing a dye penetrant inspection, the developer
Acts as a blotter to produce a visible indication
81
If the volume of a cylinder with the piston at the bottom center is 84 cubic inches and the piston displacement is 70 cubic inches, then the compression ratio is
6:1
82
How is the locking feature of the fiber-type locknut obtained?
By the use of an unthreaded fiber locking insert
83
Find the square root of 124.924
1,118x10 to the negative second power
84
What is the squareroot of 16 raised to the fourth power?
256
85
Select the container size that will be equal in volume to 60 gallons on fuel. (7.5 gal = 1 cu ft)
8.0 cubic feet
86
How many gallons of fuel will be contained in a rectangular-shaped tank which measures 2 feet in width, 3 feet in length, and 1 foot 8 inches in depth? (7.5 gal =1 cu ft )
75
87
A blueprint shows a hole of 0.171787 to be drilled. Which fraction size drill bit is most nearly equal?
11/64
88
An airplane flying a distance of 750 miles used 60 gallons of gasoline. How any gallons will it need to travel 2,500 miles?
200
89
Solve the equation
14.002
90
Which if the figure is using scientific notation? 1. 3.47x 10^4 = 34, 700 2. 2(4^10) 2,097,152
1
91
Which of the following describe the effects of annealing steel and aluminum alloys? 1. Decrease in internal stress 2. Softening of the metal 3. Improved corrosion resistance
1,2
92
What nondestructive testing method requires little or no part preparation, is used to detect surface or near- surface defects in most metals, and may also be used to separate metals or alloys and their heat-treat conditions?
Eddy current inspection
93
Solve the equation. ½ (-30+34)5
10
94
Compute the area of the trapezoid
10 square feet
95
A pinion gear with 14 teeth is driving a spur gear with 42 teeth at 140 RPM. Determine the speed of the pinion gear.
420 RPM
96
What force is exerted on the piston in a hydraulic cylinder if the area of piston is 1.2 square inches and the fluid pressure is 850 PSI?
1,020 pounds
97
(1) In nondestructive testing a discontinuity may be defined as an interruption in the normal physical structure or configuration of a part (2) A discontinuity may or may not affect the usefulness of a part Regarding the above statements,
Both No.1 and No.2 are true
98
Solve the equation. [4 x -3) +(-9x2)] ÷2=
-15
99
When checking an item with the magnetic particle inspection method, circular and longitudinal magnetization should be used to
Reveal all possible defects
100
Which of the following defects are not acceptable for metal lines? 1. Cracked flare 2. Seams 3. Dents in the heel of a bend less than 20% of the diameter 4. Scratches/nicks on the inside of a bend less than 10% of wall thickness 5. Dents in straight section that are 20% of tube diameter
1,2,3 and 5