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Nat Sci > Mathematics > Flashcards

Mathematics Flashcards

1
Q
  1. Select the fraction which is equal to 0.0250.

a. 1/4
b. 1/40
c. 1/400

A

b. 1/40

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2
Q
  1. The result of 7 raised to the third power plus the square root of 39 is equal to

a. 349.24
b. 34924
c. 34324

A

a. 349.24 (calcu)

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3
Q
  1. What is the speed ratio of an input gear with 36 teeth meshed to a gear with 20 teeth?

a. 9:5
b. 1:0.56
c. 1:1.8

A

c. 1:1.8

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4
Q
  1. Express 7/8 as a percent.

a. 8.75 percent
b. 875 percent
c. 87.5 percent

A

c. 87.5 percent (calcu)

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5
Q
  1. Which alternative answer is equal to 16,300?

a. 1.63x10 to the fourth power
b. 1.63x10 to the negative third power
c. 163x10 to the negative second power

A

a. 1.63x10 to the fourth power

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6
Q
  1. 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 the approximate piston displacement of this engine?

a. 200 cubic inches
b. 360 cubic inches
c. 235 cubic inches

A

a. 200 cubic inches

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7
Q
  1. What is the ratio of 10 feet to 30 inches

a. 4:1
b. 1:3
c. 3:1

A

a. 4:1 (calcu 120:30)

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8
Q
  1. Solve the equation. -6[-9(-8+4)-2(7+3)]=

a. -332
b. 216
c. -96

A

c. -96 (calcu)

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9
Q
  1. Solve the equation. 4-3[-6(2+3) + 4]=

a. 82
b. -25
c. -71

A

a. 82

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10
Q
  1. An engine develops 108 horse power at percent power. What horsepower would be developed at 65 percent power?

a. 81
b. 70
c. 61

A

a. 81

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11
Q
  1. A blueprint shows a hole of 0.171787 to be drilled. Which fraction size drill bit is most nearly equal?

a. 11/64
b. 9/32
c. 11/32

A

a. 11/64

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12
Q
  1. What size of sheet metal is required to fabricate a cylinder 20 inches long and 8 inches in diameter? (note C=pi x D)

a. 20 inches x25-5/32 inches
b. 20 inches x24-9/64 inches
c. 20 inches x25-9/64 inches

A

c. 20 inches x25-9/64 inches

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13
Q
  1. Select the fractional equivalent for a 0.0625 inch thick sheet of aluminum.

a. 1/16
b. 3/64
c. 1/32

A

a. 1/16

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14
Q
  1. 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?

a. 75.9 percent
b. 76.9 percent
c. 75.0 percent

A

a. 75.9 percent

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15
Q
  1. Which decimal is most nearly equal to a bend radius of 31/64?

a. 0.2065
b. 0.4844
c. 0.3164

A

b. 0.4844

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16
Q
  1. Find the square root of 1824.

a. 42.708x10 to the negative second power
b. 32708
c. 42708x10 to the second power

A

ewan ko bat ala sa choices yung sagot basta 42.708

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17
Q
  1. Find the square root of 1746.

a. 41.7852
b. 41.7752
c. 40.7742

A

a. 41.7852

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18
Q
  1. Which of the figure is using scientific notation?
  2. 3.47x = 34,700
  3. 2() 2,097,152

a. 1
b. 2
c. Both 1 and 2

A

a. 1

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19
Q
  1. Find the square root of 3,722.1835

a. 61.00971
b. 61.00
c. 61.0097

A

c. 61.0097

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20
Q
  1. 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 is the grip length.

a. 5625 inch
b. 8750 inch
c. 3125 inch

A

a. 5625 inch

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21
Q
  1. Find the cube.

a. 4
b. 192
c. 262, 144

A

c. 262, 144

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22
Q
  1. A rectangular shaped fuel tank measures 27-1/2 inches in length, 3/4 foot in width, and 8-1/4 inches in depth. How (231 cu in = 1 gal)

a. 7.366
b. 8.83
c. 170.156

A

b. 8.83 (calcu 27.5x9x8.25 all over 231)

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23
Q
  1. Sixty-five engines are what percent of 80 engines?

a. 81 percent
b. 65 percent
c. 52 percent

A

a. 81 percent

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24
Q
  1. 1.21875 is equal to

a. 83/64
b.19/16
c. 39/32

A

c. 39/32

25
Q
  1. Find the value of 10 raised to the negative sixth power.

a. 0.000001
b. 0.000010
c. 0.0001

A

a. 0.000001

26
Q
  1. The total piston displacement of a specific engine is

a. Dependent on the compression ratio.
b. The volume displayed by all the pistons during one revolution of the crankshaft.
c. The total volume of all the cylinders.

A

b. The volume displayed by all the pistons during one revolution of the crankshaft.

27
Q
  1. 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)

a. 66.6
b. 75
c. 45

A

b. 75 (keri icalcu medjj malapit sagot)

28
Q
  1. What is the square root of 4 raised to the 5th power?

a. 32
b. 64
c. 20

A

a. 32 (calcu)

29
Q
  1. Convert the binary number 1111 to decimal form.

a. 14
b. 15
c. 16

A

b. 15

30
Q
  1. What is the ratio of a gasoline fuel load of 200 gallons to one of 1680 pounds?

a. 5:7
b. 2:3
c. 5:42

A

a. 5:7

31
Q
  1. The parts department’s profit is 12 percent on a new part. How much does the part cost if the selling price is $145.60?

a. $128.13
b. $125.60
c. $130.00

A

c. $130.00

32
Q
  1. Solve the equation. (64 x 3/8) / (3/4) =

a. 18
b. 24
c. 32

A

c. 32 (calcu)

33
Q
  1. What power of 10 is equal to 1,000,000,000?

a. 10 to the sixth power
b. 10 to the tenth power
c. 10 to the ninth power

A

c. 10 to the ninth power

34
Q
  1. 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

a. 7:1
b. 1:2:1
c. 6:1

A

c. 6:1

35
Q
  1. An airplane flying a distance of 750 miles used 60 gallons of gasoline. How many gallons will it need to travel 2,500 miles?

a. 31,250
b. 9,375
c. 200

A

c. 200 (calcu (2500/750) x 60)

36
Q
  1. What is the piston displacement of a master cylinder with a 1.5 inch diameter bore and a piston stroke of 4 inches?

a. 9.427 cubic inches
b. 7.0686 cubic inches
c. 6.1541 cubic inches

A

b. 7.0686 cubic inches

37
Q
  1. Find the square root of 124.924

a. 111.8x10 to the third power
b. 1118x10 to the negative second power
c. 1,118x10 to the negative second power

A

c. 1,118x10 to the negative second power (calcu)

38
Q
  1. What is the surface area of a cube where a side (edge) measures 7.25 inches?

a. 381.078 cu. in.
b. 315.375 sq. in.
c. 52.5625 sq. in.

A

b. 315.375 sq. in. (calcu 6a^2)

39
Q
  1. What is defined as a group of bits representing a complete piece of information?

a. Byte
b. Bit
c. Word

A

a. Byte

40
Q
  1. 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?

a. 12.5
b. 15.0
c. 21.0

A

a. 12.5 (convert lahat then times)

41
Q
  1. If an engine is turning 1,965 rpm at 65 percent power, what is its maximum rpm?

a. 2653
b. 3023
c. 3242

A

b. 3023

42
Q
  1. 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?

a. 1,020 pounds
b. 960 pounds
c. 850 pounds

A

a. 1,020 pounds (calcu itimes lang)

43
Q
  1. What is the speed of a spur gear with 42 teeth drive by a pinion gear with 14 teeth turning 420 rpm?

a. 588 rpm
b. 160 rpm
c. 140 rpm

A

c. 140 rpm

44
Q
  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?

a. 59.75
b. 433.125
c. 4331.25

A

c. 4331.25 (calcu times lahat)

45
Q
  1. The radius of a piece of round stock is 7/32. Select the decimal which is most nearly equal to the diameter.

a. 0.2187
b. 0.4375
c. 0.3531

A

b. 0.4375 (calcu (7/32) x 2)

46
Q
  1. A pinion gear with 14 teeth is driving a spur gear with 42 teeth at 140 rpm. Determine the speed of the pinion gear.

a. 588 rpm
b. 420 rpm
c. 126 rpm

A

b. 420 rpm

47
Q
  1. Select the container size that will be equal in volume to 60 gallons on fuel. (7.5 gal = 1 cu ft)

a. 7.5 cubic ft
b. 8.0 cubic feet
c. 8.5 cubic feet

A

b. 8.0 cubic feet (calcu 60/7.5)

48
Q
  1. 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

a. 256.88 cubic inches
b. 259.77 cubic inches
c. 43.3 cubic inches

A

b. 259.77 cubic inches

49
Q
  1. What is the square root of 16 raised to the fourth power?

a. 1,024
b. 4,096
c. 256

A

c. 256 (calcu)

50
Q
  1. The number 3.47x10 to the negative fourth power is equal to

a. 00347
b. 34700
c. 000347

A

c. 000347

51
Q
  1. Select the decimal which is most nearly equal to 77/64

a. 0.08311
b. 0.8311
c. 1.2031

A

c. 1.2031(calcu)

52
Q
  1. Solve the equation. (32 x 3/8) 1/6 =

a. 12
b. 2
c. 72

A

c. 72 (double check kasi parang 2 yung tamang sagot)

53
Q
  1. Solve the equation. 1/2 (-30 + 34) 5

a. 10
b. 95
c. 160

A

a. 10 (calcu)

54
Q
  1. Solve the equation. [(4 x -3)+(-9 x 2)] / 2 =

a. -30
b. -15
c. -5

A

b. -15 (calcu)

55
Q
  1. Express 5/8 as a percent

a. 625 percent
b. 6.25 percent
c. 62.5 percent

A

c. 62.5 percent (calcu)

56
Q
  1. Which of the following is the square root of (-1776)/(-2)-632?

a. 128
b. 256
c. 16

A

c. 16 (calcu)

57
Q
  1. Solve the equation. (-3 + 2)(-12 - 4) + (-4 + 6) x 3

a. 20
b. 22
c. 28

A

b. 22 (calcu)

58
Q
  1. 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)

a. 14.6 amperes
b. 12.4 amperes
c. 14.3 amperes

A

a. 14.6 amperes

59
Q
  1. An engine of 98 horse power maximum is running at 75 percent power. What is the horsepower being developed?

a. 87.00
b. 33.30
c. 73.50

A

c. 73.50 (calcu 98 x 0.75)

Nat Sci (3 decks)

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