Mathematics (2) Flashcards
Find the square root of 124.924
a. 111.8x 10 to the third power
b. 1118x10 to the negative second power
c. 1,118x10 to the negative second power
c. 1,118x10 to the negative second power
Compute the area of trapezoid.
4 inches
2 inches
6 inches
a. 24 square feet
b. 48 square feet
c. 10 square feet
c. 10 square feet
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. 12.5
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
c. 140 RPM
Which alternative answer is equal to 5.59?
- (โ๐๐) + (โ๐๐) รท ๐๐๐
- (โ31 + โ43) รท 172
- ( โ31 + โ43) โ 172
- (โ๐๐) + (โ๐๐) รท ๐๐๏ฟฝ
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
b. 0.4375
If an engine is turning 1,965 rpm at 65 percent
power, what is its maximum rpm?
a. 2653
b. 3023
c. 3242
b. 3023
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
b. 420 RPM
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
B C
A D
a. 42 square inches
b. 63 square inches
c. 126 square inches
b. 63 square inches
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. 14.6 amperes
Which of the following is the square root of (-1776)/
(-2)-632?
a. 128
b. 256
c. 16
c. 16
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. 1,020 pounds
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
b. 259.77 cubic inches
Solve the equation.
โ4โ125
โ6โโ36
=
a. +31.25
b. -5.20
c. -31.25
b. -5.20
What is the square root of 16 raised to the fourth power?
a. 1,024
b. 4,096
c. 256
c. 256
The number 3.47x 10 to the negative fourth power is equal to
a. 00347
b. 34700
c. 000347
c. 000347
Solve the equation
(โ5 + 23)(โ2) + (3โ3)(โ64) /
โ27 รท 9
a. 11.9
b. 11.7
c. 11.09
Select the decimal which is most nearly equal to
77/64
a. 0.08311
b. 0.8311
c. 1.2031
c. 1.2031
Solve the equation.
(32x 3/8) รท 1/6 =
a. 12
b. 2
c. 72
c. 72
Solve the equation.
ยฝ (-30+34)5
a.10
b. 95
c. 160
a.10
Solve the equation.
[4 x -3) +(-9x2)] รท2=
a. -30
b. -15
c. -5
b. -15
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
c. 4331.25
Compute the area of the trapezoid
9โ
5โ
12โ
a. 52.5 square feet
b. 60 square feet
c. 76.5 square feet
a. 52.5 square feet
Express 5/8 as a percent
a. 625 percent
b. 6.25 percent
c. 62.5 percent
c. 62.5 percent
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
b.22
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
b. 8.0 cubic feet
Solve the equation.
(-3+2) (-12 โ 4)+(-4+6) x3
a. 20
b.22
c.28
b.22
Solve the equation.
-4+6+103 (โ1296) =
a. 35,998
b. 36002
c. 62,208
b. 36002
