MECHANICAL OPERATIONS QUIZ

For benefication of iron ore, the most commonly used method is

None of these

Flocculation

Jigging & tabling

Froth floatation

TRUE ANSWER : ?
YOUR ANSWER : ?

The opening of a 200 mesh screen (Taylor series) is

0.0047 cm

0.0074 mm

74 mili-microns

0.0074 cm

TRUE ANSWER : ?
YOUR ANSWER : ?

Gummy & sticky materials like molasses, sugar etc. are best transported/handled by using a __________ conveyor.

Slat

Ribbon

Screw

Drag

TRUE ANSWER : ?
YOUR ANSWER : ?

The porosity of a compressible cake is

Minimum at the filter medium

Minimum at the upstream face

Maximum at the filter medium

Same throughout the thickness of cake

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Toggles

Hanger

Check plates

Pitman

TRUE ANSWER : ?
YOUR ANSWER : ?

Sphericity of a cubical particle, when its equivalent diameter is taken as the height of the cube, is

√2

1

√3

0.5

TRUE ANSWER : ?
YOUR ANSWER : ?

Traces of solids are removed from, liquid in a

Classifier

Sparkler filter

Rotary vacuum filter

Clarifier

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following may prove unsuitable for filtering volatile liquids?

Vacuum filter

Gravity filter

Centrifugal filter

Pressure filter

TRUE ANSWER : ?
YOUR ANSWER : ?

Vibrating screens are used for handling large tonnages of materials. The vibrating motion is imparted to the screening surface by means of

Unblanced fly wheels

Either A, B or C

Cams or eccentric shafts

Electromagnets

TRUE ANSWER : ?
YOUR ANSWER : ?

Mass flow of granular solid (M) through a circular opening of dia, D follows

M ∝ D

M ∝ D³

M ∝ √D

M ∝ D²

TRUE ANSWER : ?
YOUR ANSWER : ?

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