Explore topic-wise MCQs in Mechanical Operations.

This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Operations knowledge and support exam preparation. Choose a topic below to get started.

1.

What is arithmetic mean diameter?

A. Sidi/Si
B. Vidi/Vi
C. Nidi/Ni
D. Widi/Wi
Answer» D. Widi/Wi
Discussion
2.

The Bubble or Drop size diameter, is referred to _____

A. Frisch diameter
B. Bubble diameter
C. Sauter diameter
D. Sphere diameter
Answer» D. Sphere diameter
Discussion
3.

The surface are of the particle, is given as _____

A. πd2s
B. Φd2s
C. πV2s
D. πP2s
Answer» B. Φd2s
Discussion
4.

THE_BUBBLE_OR_DROP_SIZE_DIAMETER,_IS_REFERRED_TO______?$

A. Frisch diameter
B. Bubble diameter
C. Sauter diameter
D. Sphere diameter
Answer» D. Sphere diameter
Discussion
5.

What_is_arithmetic_mean_diameter?$

A. S<sub>i</sub>d<sub>i</sub>/S<sub>i</sub>
B. V<sub>i</sub>d<sub>i</sub>/V<sub>i</sub>
C. N<sub>i</sub>d<sub>i</sub>/N<sub>i</sub>
D. W<sub>i</sub>d<sub>i</sub>/W<sub>i</sub>
Answer» D. W<sub>i</sub>d<sub>i</sub>/W<sub>i</sub>
Discussion
6.

The surface are of the particle, is given as ____?

A. πd<sup>2</sup>s
B. Φd<sup>2</sup>s
C. πV<sup>2</sup>s
D. πP<sup>2</sup>s
Answer» B. ‚âà√≠¬¨‚àÇd<sup>2</sup>s
Discussion
7.

The power required, can be given by ____

A. w*D<sub>p</sub>
B. w*A<sub>s</sub>
C. w*n<sub>c</sub>
D. w*m
Answer» E.
Discussion
8.

On which of the equation below, Energy absorbed can be calculated?

A. es(A1-A2)/D<sub>p</sub>
B. es(A1-A2)/n<sub>c</sub>
C. es(A1-A2)/w<sub>c</sub>
D. es(A1-A2)/s<sub>c</sub>
Answer» D. es(A1-A2)/s<sub>c</sub>
Discussion
9.

The ratio of energy absorbed to the energy input is defined as the ___

A. Crushing Efficiency
B. Mechanical Efficiency
C. Work Done
D. Final Power
Answer» C. Work Done
Discussion
10.

Crushing Efficiency ranges between ____

A. 0.06 and 1%
B. 0.05 and 2%
C. 0.5 to 5%
D. 60 to 90%
Answer» B. 0.05 and 2%
Discussion
11.

Crushing efficiency is the ratio of ____

A. Energy wasted to Energy wasted
B. Energy wasted to Energy created
C. Energy created Energy wasted
D. Energy Destroyed to Energy wasted
Answer» D. Energy Destroyed to Energy wasted
Discussion
12.

Volume of any particle, can be given as ______

A. a*D<sub>p</sub><sup>3</sup>
B. a*D<sub>p</sub><sup>2</sup>
C. a*D<sub>p</sub>
D. a*S<sub>p</sub>
Answer» B. a*D<sub>p</sub><sup>2</sup>
Discussion
13.

The volume surface mean diameter, can be defined as ___

A. 6/Φ<sub>s</sub>A<sub>w</sub>P<sub>p</sub>
B. 6/Φ<sub>s</sub>A<sub>w</sub>V<sub>p</sub>
C. 6/Φ<sub>s</sub>A<sub>w</sub>D<sub>p</sub>
D. 6/Φ<sub>s</sub>A<sub>w</sub>S<sub>p</sub>
Answer» B. 6/‚âà√≠¬¨‚àÇ<sub>s</sub>A<sub>w</sub>V<sub>p</sub>
Discussion