A.pressure relief valve
B.air relief valve
C.reflux valve
D.sluice valve
Explanation: The correct answer is reflux valve.
Submitted by: Academy of Pakistan
Civil Engineering MCQs: 3,057 practice questions with answer choices and available explanations. Page 139 of 204.
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A.Weber’s number
B.Reynold’s number
C.none of the above
D.Froude number
E.Mach number
Explanation: The correct answer is Mach number.
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A.uniform
B.laminar
C.steady
D.unsteady
E.free vortex type
Explanation: The correct answer is unsteady.
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A.none of the above
B.takes less time
C.requires more labour
D.gives more accurate problem
Explanation: The correct answer is requires more labour.
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A.silica and alkalies
B.lime stone and alumina
C.alkalies and magnesium
D.alumina and iron
Explanation: The correct answer is silica and alkalies.
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A.Irrigation
B.Oxidation
C.Dilution
D.Purification
Explanation: The correct answer is Dilution.
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A.One fourth breadth of wall on each side
B.Half breadth of wall on each side
C.None of these
D.Breadth of the wall
Explanation: The correct answer is Half breadth of wall on each side.
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A.none of the above
B.unit weight only
C.viscosity only
D.both viscosity and unit weight
Explanation: The correct answer is both viscosity and unit weight.
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A.mitred joint
B.butt joint
C.mortise and tennon joint
D.oblique mortise and tennon joint
Explanation: The correct answer is oblique mortise and tennon joint.
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A.4 mm
B.8 mm
C.6 mm
D.5 mm
Explanation: The correct answer is 6 mm.
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A.(i) and (ii) are correct
B.(i), (ii) and (iii) are correct
C.(i) and (iii) are correct
D.(ii) and (iii) are correct
Explanation: The correct answer is (i), (ii) and (iii) are correct.
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A.all of the above
B.full immersion or completely enclosed flow, as with pipes, aircraft wings, nozzles etc.
C.supersonics, as with projectile and jet propulsion
D.simultaneous motion through two fluids where there is a surface of dis-continuity, gravity forces, and wave making effect, as with ship’s hulls
E.none of the above
Explanation: The correct answer is simultaneous motion through two fluids where there is a surface of dis-continuity, gravity forces, and wave making effect, as with ship’s hulls.
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A.A is true but R is false
B.Both A and R are true and R is the correct explanation of A
C.Both A and R are true but R is not a correct explanation of A
D.A is false but R is true
Explanation: The correct answer is Both A and R are true and R is the correct explanation of A.
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A.a cylinder
B.a sphere
C.a circular disc of plate held normal to flow
D.a streamlined body
Explanation: The correct answer is a circular disc of plate held normal to flow.
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A.Lever arm/(Shear force × Width)
B.Shear force/(Lever arm × Width)
C.Width/(Lever arm × Shear force)
D.(Shear force × Width)/Lever arm
Explanation: The correct answer is Shear force/(Lever arm × Width).
Submitted by: Academy of Pakistan