1.

In many flow situations, the duct can be(i) Circular(ii) Rectangle(iii) Trapezoidal(iv) AnnulusIdentify the correct option

A. 1 and 2
B. 1, 2, 3 and 4
C. 1, 2 and 3
D. 3 and 4
Answer» C. 1, 2 and 3


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