FLUID MECHANICS QUIZ

Pressure drop (Δp) for a fluid flowing in turbulent flow through a pipe is a function of velocity (V) as

V2.7

V1.8

V2

V-0.2

TRUE ANSWER : ?
YOUR ANSWER : ?

The ratio of pressure forces to inertial forces is called the __________ number.

Mach

Reynold

Froude

Euler

TRUE ANSWER : ?
YOUR ANSWER : ?

Select the wrong statement pertaining to flow of an incompressible fluid through a venturimeter.

Venturimeter occupies less space than an orificemeter

For frictionless flow, the fluid pressure entering the venturi meter will be exactly equal to that leaving the venturimeter

Venturimeter incurs less power loss compared to an equivalent orificemeter

Discharge of fluid through a venturimeter depends upon the gage difference irrespective of the orientation of venturimeter

TRUE ANSWER : ?
YOUR ANSWER : ?

A piezometer opening measures the __________ fluid pressure.

Dynamic

Undisturbed

Static

Total

TRUE ANSWER : ?
YOUR ANSWER : ?

In case of turbulent flow of a Newtonion fluid in a straight pipe, the maximum velocity is equal to (where, Vavg = average fluid velocity)

1.2 Vavg

1.8 Vavg

1.5 Vavg

Vavg

TRUE ANSWER : ?
YOUR ANSWER : ?

For pipes that must be broken at intervals for maintenance, the connector used should be a/an

Reducer

Tee

Union

Elbow

TRUE ANSWER : ?
YOUR ANSWER : ?

The unit of velocity head is

ft-lbf/lb

ft-lb/ft³

ft-lb/sec

ft-lbf/sec

TRUE ANSWER : ?
YOUR ANSWER : ?

The equivalent diameter for flow through a rectangular duct of width B and height H is

2HB/(H + B)

HB/2(H + B)

4HB/(H + B)

HB/(H + B)

TRUE ANSWER : ?
YOUR ANSWER : ?

Function of air vessel provided in a reciprocating pump is to

Reduce discharge fluctuation

Increase the pump efficiency

Reduce the danger of cavitation

Avoid the necessity of priming

TRUE ANSWER : ?
YOUR ANSWER : ?

Momentum transfer in laminar flow of fluids results due to the

Velocity gradient

None of these

Viscosity

Density

TRUE ANSWER : ?
YOUR ANSWER : ?