Pick out the wrong statement.
A. Lug supports are less expensive than other type of supports
B. A pipe is differentiated from a tube by the fact that a pipe has a greater wall thickness compared to the tube
C. A reducer is used to change the direction of a pipe in a straight run
D. The method of fixing tubes to a tube sheet by expanding is called 'tube rolling'
Answer: Option C
Width and depth of grooves in the tube sheet holes normally are __________ inch respectively.
A. $$\frac{1}{8}$$ and $$\frac{1}{{64}}$$
B. $$\frac{1}{{64}}$$ and $$\frac{1}{8}$$
C. $$\frac{1}{2}$$ and 8
D. $$\frac{1}{2}$$ and 5
A. Less than
B. 1.25-1.50 times
C. 2.5 times
D. One-fourth of
Value of Peclet number = 0, is the representative of
A. Laminar flow
B. Complete back mixing
C. Plug flow
D. Eddy diffusivity = 0
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