MECHANICAL OPERATIONS QUIZ

A belt conveyor used for the transportation of materials can

Travel at a speed upto 300 metres/minute

Handle materials upto 5000 tons/hr

Run upto 1 km

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

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

π(=A/D²)

None of these

AD/V

π/6(=V/D³)

TRUE ANSWER : ?
YOUR ANSWER : ?

Vertical transportation of materials can be done by a/an

Both B & C

Bucket elevator

Apron conveyor

Pneumatic conveyor

TRUE ANSWER : ?
YOUR ANSWER : ?

increasing the capacity of a screen __________ the screen effectiveness.

Decreases

None of these

Does not effect

Increases

TRUE ANSWER : ?
YOUR ANSWER : ?

Raw materials are charged in the iron blast furnace using

Skip hoist

Screw conveyor

None of these

Bucket elevator

TRUE ANSWER : ?
YOUR ANSWER : ?

200 mesh screen means 200 openings per

Cm

Inch

Cm²

Inch²

TRUE ANSWER : ?
YOUR ANSWER : ?

Supporting legs of a plate and frame filter is normally made of

Wooden plank

High speed steel

Stainless steel

Cast iron

TRUE ANSWER : ?
YOUR ANSWER : ?

The energy consumed by a ball mill depends on

The density of the material being ground

Its ball load

All of these

Its speed

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following mineral dressing operations is termed as 'comminution'?

Tabling

Panning

None of these

Spiralling

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following oxides is not present in hematite iron ore?

Cobalt oxide

Manganese oxide

Calcium oxide

Titanium oxide

TRUE ANSWER : ?
YOUR ANSWER : ?

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