WINDOWS 2000 SERVER QUIZ

Fluid medium used in the classification technique of mineral beneficiation is

Air

Both A & B

Water

Neither A nor B

TRUE ANSWER : ?
YOUR ANSWER : ?

Sphericity is the ratio of the surface area of a spherical particle having the same volume as the particle to the surface area of the particle. Which of the following has the maximum value of sphericity?

Raschig rings

Cylinder (L/D = 1)

Sphere

Cube

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is not a wet classifier?

None of these

Sharpies supercentrifuge

Dorr Oliver rake classifier

Hydrocyclones

TRUE ANSWER : ?
YOUR ANSWER : ?

Filtrate flow rate in case of a rotary drum vacuum filter (in which Rm < < Rc) is proportional to __________ and the cycle time (where, μ = filtrate viscosity Rm = filter medium resistance Rc = cake resistance ).

1/μ

1/μ²

√μ

1/√μ

TRUE ANSWER : ?
YOUR ANSWER : ?

The filter medium resistance is controlled by

Pressure drop alone

Cake thickness

Flow rate alone

Both pressure drop and flow rate

TRUE ANSWER : ?
YOUR ANSWER : ?

Handling of ashes and similar materials can be done best by a __________ conveyor.

Flight

Ribbon

Drag or slat

Belt

TRUE ANSWER : ?
YOUR ANSWER : ?

For transporting pasty material, one will use a/an

Screw colaveyor

Apron conveyor

Belt conveyor

Bucket elevator

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is not a part of the Blake jaw crusher?

Check plates

Toggles

Pitman

Hanger

TRUE ANSWER : ?
YOUR ANSWER : ?

For spheres, the surface shape factor is given by (where, A = area, V = volume, and D = diameter)

AD/V

π/6(=V/D³)

π(=A/D²)

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Froth floatation is the most suitable for treating

Quartzite

None of these

Sulphide ores

Iron ores

TRUE ANSWER : ?
YOUR ANSWER : ?

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