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Mechanical Operations Quiz 5

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Mechanical Operations Quiz 5

1 / 50

Screen capacity is not a function of___________?

2 / 50

Reduction ratio of crushers is the_____?

3 / 50

Pick out the correct statement ?

4 / 50

Pick out the correct statement?

5 / 50

Screen capacity is expressed in terms of______?

6 / 50

Moore filter is a _______ filter ?

7 / 50

Rittinger?s crushing law states that_______?

8 / 50

Ore concentration by jigging is based on the difference in the _______ of the particles?

9 / 50

Sauter mean diameter is the same as the _______ mean diameter?

10 / 50

Out of the following size reduction equipments, the maximum feed size can be accepted by the___________?

11 / 50

Removal of activated carbon from glycerine is done by __________?

12 / 50

Pick out the correct statement?

13 / 50

Pick out the correct statement ?

14 / 50

Rod mills employed for grinding__________?

15 / 50

Pick out the wrong statement?

16 / 50

Pick out the material having minimum Rittinger?s number?

17 / 50

Paddle agitator__________?

18 / 50

Pick out the wrong statement?

19 / 50

Molten ammonium nitrate is mixed with ground limestone in fertilizer plant in a___________?

20 / 50

Power required to drive a ball mill with a particular ball load is proportional to (where, D = diameter of ball mill.) ?

21 / 50

Rittinger number which designates the new surface produced per unit of mechanical energy absorbed by the material being crushed, depends on the ________?

22 / 50

Pick out the wrong statement?

23 / 50

Pine oil and Cresylic acid are used as _______ in the froth floatation process?

24 / 50

Pulverised coal passing through 200 mesh screen has a diameter of 0.074 mm (74 micron). The same passing through 50 mesh screen will have a dia of _____ mm?

25 / 50

Pick out the wrong statement ?

26 / 50

Mixing of light fine powder such as insecticides is done by______?

27 / 50

Power consumption during turbulent flow in agitation tank is proportional to the _______ of the liquid?

28 / 50

Pick out the wrong statement pertaining to the turbine agitator ?

29 / 50

Mixing of plastic solids is generally facilitated by_____?

30 / 50

Run of mine (ROM) coal is crushed by a ___________ for use in domestic ovens?

31 / 50

Reciprocal of sphericity is termed as the_________?

32 / 50

Raw materials are charged in the iron blast furnace using______?

33 / 50

Production rate ______ with increased fineness, with a given energy input to the size reduction machine?

34 / 50

Ribbon blenders are exclusively meant for ___________?

35 / 50

Moisture can be removed from lubricating oil using__________?

36 / 50

Range of compressibility co-efficient of the commercial compressible cake obtained in filtration operation is_______?

37 / 50

Rittinger?s number designates the new surface created per unit mechanical energy absorbed by the material being crushed. Larger value of Rittinger?s number of a material indicates its_________?

38 / 50

Pebble mills are tumbling mills widely used for grinding in the manufacture of paints & pigments and cosmetic industries, where iron contamination in the product is highly objectionable. Pebbles used in pebble mill are made of___________?

39 / 50

Percentage of drum submerged in the slurry in case of rotary drum filter is _________?

40 / 50

Pick out the wrong statement ?

41 / 50

Pine oil used in froth floatation technique acts as a/an_______?

42 / 50

Reciprocating screens are normally inclined at an angle of 5? with the horizontal and employ gyratory motion at feed end & reciprocating motion at the discharge end. They are not suitable for the screening of the _____?

43 / 50

Mixing mechanism employed in a pan mixer is by _________?

44 / 50

Pick out the wrong statement pertaining to the roll crushers?

45 / 50

Optimum ratio of operating speed to critical speed of a trommel is_______?

46 / 50

Pick out the wrong statement ?

47 / 50

Number of particles in a crushed solid sample is given by (where, m = mass of particles in a sample, Vp = volume of one particle, ?= density of particles) ?

48 / 50

Particle size range in which dust catcher (gravity settling chamber) works most effectively and efficiently is _______ microns?

49 / 50

Pick out the wrong statement ?

50 / 50

Pick out the wrong statement ?

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