The equivalent diameter for pressure drop calculation for a duct of square cross-section is given by (where, x = each side of the square duct). (A) x (B) √(πx) (C) √(2x) (D) √(x/2)

The equivalent diameter for pressure drop calculation for a duct of
square cross-section is given by (where, x = each side of the square duct).
(A) x
(B) √(πx)
(C) √(2x)
(D) √(x/2)
by

1 Answer

Answer :

(A) x
by

Related questions

The equivalent diameter for fluid flow through square cross section channel of side 'x', for pressure drop calculation purpose is given by (A) 4x (B) 2x (C) x (D) √x

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Pick out the wrong statement. (A) In case of heat transfer by purely forced convection, GR /Re 2 ≤ 1 (B) The equivalent diameter of heat transfer for a duct of square cross￾section (having each side as 'x') is equal to 4x (C) Distillation process is not the same as evaporation (D) The effectiveness of nucleate boiling depends basically on the ease with which the bubbles are formed and detached from the heating surface

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In a shell and tube heat exchanger, square pitch compared to triangular pitch (A) Gives a higher shell side pressure drop (B) Gives a lower shell side pressure drop (C) Can pack more surface area into a shell of given diameter (D) None of these

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If the side of a square sewer is 1000 mm, the diameter of a hydraulically equivalent circular section, is A. 1045 mm B. 1065 mm C. 1075 mm D. 1095 mm

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The ratio of the diameter of a circular section and the side of a square section hydraulically equivalent, is A. 1.095 B. 1.085 C. 1.075 D. 1.065

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The equivalent diameter for flow through a rectangular duct of width B and height H is (A) HB/2 (H + B) (B) HB/(H + B) (C) 2HB/(H + B) (D) 4HB/(H + B)

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The equivalent diameter for pressure drop is __________ that for heat transfer. (A) Smaller than (B) Greater than (C) Equal to (D) Not related with

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The fluid velocity varies as the square of the cylindrical pipe diameter, in case of steady state laminar flow at constant pressure drop, for __________ fluid. (A) Newtonian (B) Dilatant (C) Pseudo-plastic (D) Non-Newtonian

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The fluid velocity varies as the square root of the cylindrical pipe diameter in case of steady state laminar flow at constant pressure drop of __________ fluid. (A) Dilatent (B) Pseudo-plastic (C) Bingham plastic (D) Newtonian

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A transmission shaft is subjected to bending moment (Mb) and torsional moment (Mt). The equivalent bending moment is given by, (A) √(Mb + Mt) (B) √(Mb2 + Mt2) (C) Mb + Mt (D) Mb +√(Mb2 + Mt2)

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Shell side pressure drop in a shell and tube heat exchanger does not depend upon the (A) Baffle spacing & shell diameter (B) Tube diameter & pitch (C) Viscosity, density & mass velocity of shell side fluid (D) None of these

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The ratio of the section modulus of a square section of side B and that of a circular section of diameter D, is (A) 2 /15 (B) 3 /16 (C) 3 /8 (D) /16

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A metal pipe is 77 cm long. The inner diameter of a cross section is 4 cm, the outer diameter being 4.4cm. -Maths 9th

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