Related Questions

A fluid whose apparent viscosity increases with shear rate is termed as the __________ fluid.
A Newtonion
B Viscous
C Dilatant
D Non-viscous
According to Newton's law of viscosity, the shear stress on a layer of a fluid is __________ to the rate of shear strain.
A Equal to
B Directly proportional
C Inversely proportional
D None of these
Two fluids are flowing through two similar pipes of the same diameter. The Reynold's number is same. For the same flow rate if the viscosity of a fluid is reduced to half the value of the first fluid, the pressure drop will
A Increase
B Decrease
C Remain unchanged
D Data insufficient to predict relative pressure drop
Flow rate of those fluids which are insensitive to changes in their density, viscosity or flow velocity profile can be best measured by a
A Magnetic flowmeter
B Pitot tube
C Flow nozzle type flowmeter
D Turbine flowmeter
The strain energy stored in a body due to shear stress, is (where $$\tau $$ = Shear stress, C = Shear modulus and V = Volume of the body)
A $$\frac{{\tau {\text{V}}}}{{2{\text{C}}}}$$
B $$\frac{{2{\text{C}}}}{{\tau {\text{V}}}}$$
C $$\frac{{{\tau ^2}{\text{V}}}}{{2{\text{C}}}}$$
D $$\frac{{2{\text{C}}}}{{{\tau ^2}{\text{V}}}}$$
A fluid whose viscosity does not change with the rate of deformation or shear strain is known as
A Real fluid
B Ideal fluid
C Newtonian fluid
D Non-Newtonian fluid
The kinematic viscosity (in stoke) and the absolute/dynamic viscosity (in poise) are the same for __________ at room temperature.
A Air
B Water
C Mercury
D Alcohol
The rate of shear versus the shear stress curves are time dependent for __________ fluid.
A Thixotropic
B Rheopectic
C Both A and B
D Neither A nor B
Viscous force is the __________ of shear stress due to viscosity and cross-section area of flow.
A Sum
B Different
C Product
D Ratio
Of the five bill collectors at Apex Collection Agency, Mr . Mamun has the highest rate of unsuccessful collections . Yet Mr . Mamun is the best bill collector on the agency's staff. which one of the following , if true, most helps to resolve the apparent
A None of the bill collectors at the agency has been working longer than Mr . Mamun
B The other four bill collectors at the agency consider Mr. Mamun to be a very capable bill collector
C Mr. Manun's rate of collections per year has remained fairly steady in the last few years.
D Before joining the agency , Mr. Mamun was affiliated with the credit department of a large department store

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