MECHANICAL OPERATIONS QUIZ

The material is crushed in a gyratory crusher by the action of

Compression

Impact

Attrition

Cutting

TRUE ANSWER : ?
YOUR ANSWER : ?

In washing type plate and frame filter press, the ratio of washing rate to the final filtrate rate is

1/2

4

1/4

1

TRUE ANSWER : ?
YOUR ANSWER : ?

Horsepower required for a roll crusher is directly proportional to its

Both A & B

Capacity

Reduction ratio

Neither A nor B

TRUE ANSWER : ?
YOUR ANSWER : ?

Moisture can be removed from lubricating oil using

Vacuum leaf filter

Sparkler filter

Tubular centrifuge

Clarifier

TRUE ANSWER : ?
YOUR ANSWER : ?

The filter medium resistance is controlled by

Pressure drop alone

Cake thickness

Both pressure drop and flow rate

Flow rate alone

TRUE ANSWER : ?
YOUR ANSWER : ?

Apron conveyors are used for

Heavy loads & short runs

None of these

Small loads & long runs

Heavy loads & long runs

TRUE ANSWER : ?
YOUR ANSWER : ?

Which one is a filter aid?

None of these

Diatomaceous earth

Convas fabric

Calcined lime

TRUE ANSWER : ?
YOUR ANSWER : ?

Crushing efficiency is the ratio of the

Surface energy created by crushing to the energy absorbed by the solid

Energy absorbed by the solid to that fed to the machine

Energy absorbed by the solid to the surface energy created by crushing

Energy fed to the machine to the surface energy created by crushing

TRUE ANSWER : ?
YOUR ANSWER : ?

Hot, lumpy & abrasive materials are best transported by using a/an __________ conveyor.

Belt

Flight

Apron

Screw

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

1/√μ

√μ

TRUE ANSWER : ?
YOUR ANSWER : ?