1000+ Mechanical Operations Interview Questions and Answers - 1

Question: 1

A filter press is

(A) not suitable for wide range of materials under varying operating conditions of cake thickness and pressure

(B) having prohibitively high maintenance cost

(C) not suitable if the liquid is the main product

(D) a batch filter

Question: 2

According to Rittinger’s law crushing efficiency

(A) is constant and for a particular machine and feed materials, is independent of the feed and product sizes

(B) depends on both feed and product sizes

(C) depends on the product size

(D) depends on the feed size

Question: 3

Which of the following represents the plot of filtrate volume versus time for constant pressure filtration?

(A) exponential curve

(B) hyperbola

(C) straight line

(D) parabola

Question: 4

During the washing of cake

(A) cake resistance decreases

(B) filter medium resistance decreases

(C) filter medium resistance increases

(D) all the resistances are constant

Question: 5

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

(A) muller mixture

(B) pug mill

(C) banbury mixer

(D) mixer extruder