List of practice Questions

The main size reduction operation in ultrafine grinders is
Heat transfer by conduction is described by
The thermal conductivity of a solid
The Prandtl number (\(N_{Pr}\)) is the ratio of
If \( d_p \) is the equivalent diameter of a non-spherical particle, \( V_p \) its volume and \( S_p \) its surface area, then its sphericity \( \Phi_s \) is defined by
Two particles are called to be equal settling, if they are having the same
Device in which the pressure drop is constant and the area through which the fluid varies with flow rate is
For sizing of fine materials, the most suitable equipment is a
Filter aid is used
Maximum size reduction in a fluid energy mill is achieved by
Which of the following equipment is used for size reduction of coarse solids?
The conveyor suitable for transportation of sticky material is
The loss due to sudden contraction is proportional to
For Non-Newtonian fluids, power law model consists parameter \( K \) known as
Empirical equation that is applicable for flow through beds at \( Re = 1.0 \) is
Once the bed is fluidized, with increasing the flow, the pressure drop across the bed
If the suction pressure is only slightly greater than the vapour pressure, some liquid may flash to vapour inside the pump is
The heart of the centrifugal pump is
Henry’s law is closely obeyed by a gas when component
For an ideal gas, the activity co-efficient is
Modified Raoult’s law is written as (where \( \gamma \) is the activity coefficient)
NRTL equation is a ....parameter model
Potential flow is the flow of
Newton’s law of viscosity relates
Dimensions of kinematic viscosity is