MECHANICAL OPERATIONS QUIZ

The most common filter aid is

Diatomaceous earth

Silica gel

Sodium carbonate

Calcium silicate

TRUE ANSWER : ?
YOUR ANSWER : ?

Filtration capacity of a rotary drum vacuum filter depends upon the

Cake thickness

Neither A nor B

Both A & B

Characteristics of the feed slurry

TRUE ANSWER : ?
YOUR ANSWER : ?

The critical speed of a trommel (N) is related to its dia (D) as

N ∝ √D

N ∝ D

N ∝ 1/√D

N ∝ 1/D

TRUE ANSWER : ?
YOUR ANSWER : ?

Molten ammonium nitrate is mixed with ground limestone in fertilizer plant in a

Pug mill

Banbury mixer

Muller mixer

Mixer-extruder

TRUE ANSWER : ?
YOUR ANSWER : ?

In case of a ball mill,

Operating speed should be more than the critical speed

Coarse feed requires a larger ball

None of these

Fine feed requires a larger ball

TRUE ANSWER : ?
YOUR ANSWER : ?

For the preliminary breaking of hard rock, we use a

Ball mill

Squirrel-cage disintegrator

Gyratory crusher

Tube mill

TRUE ANSWER : ?
YOUR ANSWER : ?

The main size reduction operation in ultrafine grinders is

Cutting

Compression

Attrition

Impact

TRUE ANSWER : ?
YOUR ANSWER : ?

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

Pitman

Check plates

Toggles

Hanger

TRUE ANSWER : ?
YOUR ANSWER : ?

For spheres, volume shape factor is given by

2π(=2A/D²)

π(=A/D²)

π/6(=V/D³)

AD/V

TRUE ANSWER : ?
YOUR ANSWER : ?

Sorting classifiers employing differential settling methods for separation of particles make use of the differences in their

None of these

Densities

Terminal velocities

Particle sizes

TRUE ANSWER : ?
YOUR ANSWER : ?

↑