Related Questions

With decrease in particle size to be fluidised by a particular fluid, the operating range of fluidisation velocity
A Widens
B Squeezes
C Does not change
D Unpredictable from the data
Minimum porosity for fluidisation is
A That corresponding to static bed
B That corresponding to completely fluidised bed
C The porosity of the bed when true fluidisation begins
D Less than that of the static bed
Which of the following is not an advantage of fluidisation from transfer operation point of view?
A Intimate contact of the fluid with all parts of the solid particles
B Lower fluid pumping power requirement
C Minimisation of temperature variation
D Prevention of particle seggregation
When larger particles e.g., grains are subjected to fluidisation, the corresponding bed produced is termed as the __________ bed.
A Spouted
B Sluggish
C Boiling
D Teeter
In continuous fluidisation
A Solids are completely entrained
B The pressure drop is less than that for batch fluidisation
C There is no entrainment of solids
D Velocity of the fluid is very small
The specific cutting energy used for establishing the machinability of the metal depends upon its
A coefficient of friction
B micro-structure
C work hardening characteristics
D all of the mentioned
Specific heat of an ideal gas depends upon its
A Molecular weight
B Pressure
C Temperature
D Volume
Specific speed of a centrifugal pump depends upon the __________ head.
A Suction
B Delivery
C Manometric
D None of these
The specific speed of a hydraulic turbine depends upon
A Speed and power developed
B Discharge and power developed
C Speed and head of water
D Speed, power developed and head of water
Velocity of a reaction depends upon the
A Nature of the reactants
B Concentration of the reactants
C Temperature at which the reaction is carried
D All of the above

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