Mechanical Operations Quiz 3
1 / 50
Grinding efficiency of a ball mill is of the order of ________ percent?
2 / 50
For transporting pasty material, one will use a/an___________?
3 / 50
Filtration rate through a filter cake is proportional to (where, S = filtering surface R = specific cake resistance ? = viscosity of the filtrate) ?
4 / 50
Grizzlies are used for separating ______ solids?
5 / 50
Filtration of water in a paper mill is done by a/an ________ filter?
6 / 50
For spheres, the surface shape factor is given by (where, A = area, V = volume, and D = diameter) ?
7 / 50
For raschig rings, the sphericity is_______?
8 / 50
Filtration rate does not depend upon the_________?
9 / 50
For sizing of fine materials, the most suitable equipment is a______?
10 / 50
Fluid energy mill comes in the category of_________?
11 / 50
Gold ore concentration is mostly done using_____?
12 / 50
General crushing equation is given by d(P/m) = -K (dD? S/D? n S). Bond?s crushing law is obtained by solving this equation for n = ______ and feed of infinite size?
13 / 50
Filtrate flow rate in case of a rotary drum vacuum filter (in which Rm < < Rc) is proportional to _____ and the cycle time (where, ? = filtrate viscosity Rm = filter medium resistance Rc = cake resistance)?
14 / 50
For spheres, volume shape factor is given by______?
15 / 50
Fick?s law relates to__________?
16 / 50
General mechanism of size reduction in intermediate and fine grinder is by ___________?
17 / 50
For achieving maximum capacity of the ball mill, the ball charge should be equal to about _______ percent of the ball mill volume?
18 / 50
Grinding characteristic of a material is given by its_____?
19 / 50
Fluid medium used in the classification technique of mineral beneficiation is__________?
20 / 50
Np ? 1/NRe choiceno C Short distance transportation of grain, gravel, sand, ash, asphalt etc. is done by using a _______ conveyor?
21 / 50
Fibrous material is broken by a___________?
22 / 50
Filter medium resistance is important during the _______ of filtration?
23 / 50
For the transportation of ultrafine particles, the equipment used is a _____ conveyor?
24 / 50
Filter medium resistance is that offered by the___________?
25 / 50
Froth floatation is the most suitable for treating ______?
26 / 50
For coarse reduction of hard solids, use ______?
27 / 50
Gravity settling process is not involved in the working of a_________?
28 / 50
For a non-spherical particle, the sphericity___________?
29 / 50
For a sphere falling in the constant drag co-efficient regime, its terminal velocity depends on its diameter D. as__________?
30 / 50
For separation of sugar solution from settled out mud, we use a _____ filter?
31 / 50
Filtration should be stopped in a filter press, if the__________?
32 / 50
For a cyclone of diameter 0.2 m with a tangential velocity of 15 m/s at the wall, the separation factor is___________?
33 / 50
For Indian standard (IS) screens, the mesh number is equal to its aperture size expressed to the nearest deca-micron (0.01 mm). Aperture width of IS screen of mesh number 50 will be approximately ______ microns?
34 / 50
For benefication of iron ore, the most commonly used method is_______?
35 / 50
Gravity stamp mill is meant for the _____ crushing?
36 / 50
For classification of potable (drinking) water, we use a ________ filter?
37 / 50
For the preliminary breaking of hard rock, we use a______?
38 / 50
Gyratory crushers compared to the reciprocating jaw crushers___________?
39 / 50
Filter aid is used to______?
40 / 50
Gelatinous solid (which plug the septum) can be filtered by a ______ filter?
41 / 50
For laminar flow of filtrate through the cake deposited on septum, which of the following will be valid ?
42 / 50
Grindability of a material does not depend upon its_______?
43 / 50
For spheres, the specific surface shape factor is given by_____?
44 / 50
Filtration operation carried out by continuous increase of the inlet pressure of slurry, is called the ______ filtration?
45 / 50
Flow of filtrate through the cake in a plate and frame filter press is best described by the _______ equation?
46 / 50
For efficient grinding, ball mills must be operated___________?
47 / 50
For crushing of solids, the Rittinger?s law states that the work required for crushing is proportional to ___________?
48 / 50
For removal of very small amounts of precipitate from large volume of water, the most suitable filter is the _______ filter?
49 / 50
Filtration capacity of a rotary drum vacuum filter depends upon the________?
50 / 50
Float and sink test determines the possibility of cleaning of coal by a process based on the_____?
Provide Your Information
Your score is
The average score is 0%
Restart quiz