Related Questions

__________ are used for the separation of coarse particles from a slurry of fine particles.
A Thickeners
B Classifiers
C Hydrocyclones
D Decanters
Separation of a suspension or slurry into a supernatant clear liquid (free from particles) and a thick sludge containing a high concentration of solid is called
A Classification
B Sedimentation
C Clarification
D Decantation
Which of the following statement is wrong about ultrasonic machining?
A It is best suited for machining hard and brittle materials.
B It cuts materials at very slow speeds
C It removes large amount of material
D It produces good surface finish
In ultrasonic machining, tool is made of
A Tungsten carbide
B Brass or copper
C Diamond
D Stainless steel
Ultrasonic machining is best suited for
A Tool steels
B Sintered carbides
C Glass
D All of these
In ultrasonic machining, the metal is removed by
A Using abrasive slurry between the tool and work
B Direct contact of tool with the work
C Maintaining an electrolyte between the work and tool in a very small gap between the two
D Erosion caused by rapidly recurring spark discharges between the tool and work
In abrasive jet machining, as the distance between the nozzle tip and the work surface increases, the material removal rate
A Increases continuously
B Decreases continuously
C Decreases becomes stable and then increases
D Increases, becomes stable and then decreases
__________ conveyor is the most suitable for long distance transportation of cold, non-abrasive granular/irregular shape/fine materials.
A Bucket
B Belt
C Screw
D Apron
Melt spinning of polymers involves the forcing of polymer melt through spinnerettes (fine holes) into an atmosphere kept at a temperature lower than the melting point of the polymer, which causes the fine diameter polymer melt to harden into filaments. Melt spinning is not used in case of the __________ fibres.
A Acrylic
B Polyester
C Nylon 6:6
D Polypropylene
For the transfer of solution of thick slurry, the pump used is a __________ pump.
A Reciprocating
B Gear
C Diaphragm
D Centrifugal

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