What are the functions of a triple duty valve? Select all that apply.

A) Check valve.
B) Strainer.
C) Balancing device.
D) Isolation valve.
E) Substitute for recommended straight length of pipe.


A) Check valve. , C) Balancing device. and D) Isolation valve.

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A hot air balloon has a lifting force of 1.23 kN. If a single rope is used to hold it in a breeze and it makes an angle of 15 degrees with the vertical, what is the tension in the rope?

What will be an ideal response?

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CFS members are made by roll forming of

A) coils of sheet steel. B) flat sheets. C) either of the above two types of sheets depending on the type of roll-forming machine.

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The tires on a car are 27 inches in diameter, and turn 700 times in one minute. How far (in feet) does the vehicle travel in one minute at this rate? Round to the nearest hundred feet

What will be an ideal response?

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Refer to Table 1.4 (in Section 1.3).

a. Using the class intervals in the table, construct a histogram in which the heights of the rectangles are equal to the frequencies. b. Using the class intervals in the table, construct a histogram in which the heights of the rectangles are equal to the densities. c. Compare the histograms in parts (a) and (b) with the histogram in Figure 1.8, for which the heights are the relative frequencies. Are the shapes of the histograms the same?

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