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Which of the following reasons is the incorrect reason for frictional losses in the conduit?(a) Gradual change in flow direction(b) Sudden contraction of the flow cross-sections(c) Sudden enlargement of the flow cross-sections(d) Due to irrotational flow of molten metal |
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Answer» Right answer is (d) Due to irrotational flow of molten metal Best explanation: In real fluids, the frictional losses are always present, especially when there is a sudden contraction or enlargement of the flow cross-sections and also due to a gradual change in the flow direction, e.g., in a 90° bend and similar other fittings. |
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