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.Management Sciences
Category: Fluid Mechanics for Chemical
The equation f-0.5 = 4.07 loge (NRe √f)-0.6 is called the ____________?
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A. Colebrook formula
B. Von-Karman equation
C. Fanning equation
D. None of these
Cavitation in a centrifugal pump can be avoided by keeping the__________________?
A. Inlet pressure high
B. Outlet pressure low
C. Inlet pressure low
D. Outlet pressure high
Power requirement of fans having constant wheel diameter varies _____________ fan speed?
A. As square of
B. Directly as
C. As cube of
D. None of these
The simple Pitot tube measures the _______________ pressure?
A. static
B. Dynamic
C. Total
D. None of these
The ____________ is measured by a piezometric opening?
A. Dynamic pressure
B. Static pressure
C. Total pressure
D. Point velocity
Purpose of relief valve in a reciprocating pump is to___________________?
A. Protect the pump against developing excessive pressure
B. Facilitate unidirectional flow of liquid
C. Reduce the discharge pressure
D. Control the rate of discharge
Velocity distribution for flow between two fixed parallel plates_________________?
A. Varies parabolically across the section
B. Is constant over the entire cross-section
C. Is zero at the plates and increases linearly to the mid-plane
D. None of these
The component of acceleration resulting due to unsteady nature of flow is called ____________ acceleration?
A. Normal
B. Local
C. Convective
D. Tangential
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