Related Questions

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
Which of the following is not a natural abrasive?
A Garnet
B Silicon
C Diamond
D Flint
The instruction state that Sumi may need 4/9 square yards of one type of material and 2/3 square yards of another type of material for a project. She buys exactly that amount. After finishing the project, however, she has 8/18 square yards left that she did not use. What is the total amount of square yards of material Sumi used?
A 1/12
B 1/9
C 2/3
D 10/9
Which of the following is the most suitable abrasive for grinding high tensile strength materials?
A Silicon carbide
B Corundum
C Aluminium oxide
D Boron carbide
Which of the following is a synthetic abrasive ?
A Corundum
B Emery
C Pumice
D Silicon carbide
Which of the following is the most suitable filter for separation of abrasive solids suspended in a corrosive liquid?
A Sand bed filter
B Plate and frame filter press
C Vacuum filter
D Batch basket centrifuge
Which of the following conveyors cannot be recommended for transportation of abrasive materials?
A Belt conveyor
B Apron conveyor
C Flight conveyor
D Chain conveyor
The silicon carbide abrasive is chiefly used for grinding
A Cemented carbide
B Ceramic
C Cast iron
D All of these
The size of abrasive grain required in a grinding wheel depends upon the
A Amount of material to be removed
B Hardness of material being ground
C Finish desired
D All of these
They protect plants from water loss and abrasive damage.
A Leaves
B Waxes
C Minerals
D None of the above

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