Fluid Mechanics Function of air vessel provided in a reciprocating pump is to Reduce the danger of cavitation Increase the pump efficiency Avoid the necessity of priming Reduce discharge fluctuation Reduce the danger of cavitation Increase the pump efficiency Avoid the necessity of priming Reduce discharge fluctuation ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics A 2" gate valve fitted in a pipe is replaced by a similar globe valve. Pressure drop in gate valve was Δp. For the same discharge, the pressure drop across globe valve is < Δp Δp² > Δp Δp < Δp Δp² > Δp Δp ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics Steady fluid flow occurs, when the derivative of flow variables satisfy the following condition. ∂/∂t = constant ∂/∂s = 0 ∂/∂s = constant ∂/∂t = 0 ∂/∂t = constant ∂/∂s = 0 ∂/∂s = constant ∂/∂t = 0 ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics What is the value of Fanning friction factor f ' for smooth pipe at NRe = 10⁶ approximately? 0.1 0.3 0.01 0.003 0.1 0.3 0.01 0.003 ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics Permanent pressure loss in a well designed venturimeter is about __________ percent of the venturi differential. 30 1 10 50 30 1 10 50 ANSWER DOWNLOAD EXAMIANS APP
Fluid Mechanics If three pipes of different diameters, lengths & friction factors are connected in parallel, then (where, Q = flow rate, V= fluid velocity f = friction factor). V₁ = V₂ = V₃ Q₁ = Q₂ = Q₃ Q = Q₁ + Q₂ + Q₃ F = f₁ + f₂ + f₃ V₁ = V₂ = V₃ Q₁ = Q₂ = Q₃ Q = Q₁ + Q₂ + Q₃ F = f₁ + f₂ + f₃ ANSWER DOWNLOAD EXAMIANS APP
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