Related Questions

Aerodynamic noise resulting from turbulent gas flow is the most prevalent source of valve noise in fluid ilow control. It is caused due to
A Reynold stresses
B Shear forces
C Both A & B
D Neither A nor B
Solution X contains 7% (by weight) of liquid M and solution Y contains 14.5% (by weight) of liquid M. If 3 grams of solution X is mixed with 2 grams of solution Y, then liquid M accounts for what percent of the weight of the resulting solution?
A 6.09%
B 10%
C 10.75%
D 21.5%
The ratio of hydrodynamic boundary layer to thermal boundary layer thickness in case of liquid metals is
A [

A.

B. 1

B > 1
C 2
Enthalpy change resulting, when unit mass of solid is wetted with sufficient liquid, so that further addition of liquid produces no additional thermal effect, is called the heat of
A Mixing
B Adsorption
C Wetting
D Complete wetting
Whenever a plate is held immersed at some angle with the direction of flow of the liquid, it is subjected to some pressure. The component of this pressure, in the direction of flow of the liquid, is known as
A Lift
B Drag
C Stagnation pressure
D Bulk modulus
In a liquid-liquid heat exchanger, for the same process temperature, the ratio of the LMTD in parallel flow to the LMTD in counter flow is always
A [

A.

B. > 1

B 1
C ∞
The ratio of the thickness of thermal boundary layer to the thickness of hydrodynamic boundary layer is equal to (Prandtl number) n, where n is equal to
A $$ - \frac{1}{3}$$
B $$ - \frac{2}{3}$$
C 1
D $$-1$$
The hydrodynamic and thermal boundary layers will merge, when
A Prandtl number is one
B Schmidt number tends to infinity
C Nusselt number tends to infinity
D Archimedes number is greater than 10000
In a hydrodynamic journal bearing, there is
A A very thin film of lubricant between the journal and the bearing such that there is contact between the journal and the bearing
B A thick film of lubricant between the journal and the bearing
C No lubricant between the journal and the bearing
D A forced lubricant between the journal and the bearing
The usual clearance provided in hydrodynamic bearing per mm of diameter of shaft is
A 0.01 micron
B 0.1 micron
C 1 micron
D 10 microns

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