The sphericity of a cylinder of 1 mm diameter and length 3 mm is_________________?
The sphericity of a cylinder of 1 mm diameter and length 3 mm is_________________?
A. 0.9
B. 0.78
C. 0.6
D. 0.5
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A 30% (by volume) suspension of spherical sand particles in a viscous oil has a hindered settling velocity of 4.44 μm/s. If the Richardson Zaki hindered settling index is 4.5, then the terminal velocity of a sand grain is_________________?
A 30% (by volume) suspension of spherical sand particles in a viscous oil has a hindered settling velocity of 4.44 μm/s. If the Richardson Zaki hindered settling index is 4.5, then the terminal velocity of a sand grain is_________________?A. 0.90 μm/s
B. 1 μm/s
C. 22.1 μm/s
D. 0.02 μm/s_______________ mill is normally used for grinding of talc?
_______________ mill is normally used for grinding of talc?A. Tube
B. Compartment
C. Ring-roll
D. PebbleFor laminar flow of filtrate through the cake deposited on septum, which of the following will be valid ?
For laminar flow of filtrate through the cake deposited on septum, which of the following will be valid ?A. Kozeny-Carman equation
B. Leva’s equation
C. Blake-Plummer equation
D. None of theseA sand mixture was screened through a standard 10-mesh screen. The mass fraction of the oversize material in feed, overflow and underflow were found to be 0.38, 0.79 and 0.22 respectively. The screen effectiveness based on the oversize is_________________?
A sand mixture was screened through a standard 10-mesh screen. The mass fraction of the oversize material in feed, overflow and underflow were found to be 0.38, 0.79 and 0.22 respectively. The screen effectiveness based on the oversize is_________________?A. 0.50
B. 0.58
C. 0.68
D. 0.62_______________ mill is not used for grinding wheat into flour and for milling of cereals & other ?
_______________ mill is not used for grinding wheat into flour and for milling of cereals & other ?vegetable products.
A. Buhrstone
B. Roller
C. Attrition
D. PebbleCrushing of mineral particles is accomplished in a ‘cage mill’, when one or more alloy steel bars are revolved in opposite directions. It is a type of ______________ mill?
Crushing of mineral particles is accomplished in a ‘cage mill’, when one or more alloy steel bars are revolved in opposite directions. It is a type of ______________ mill?A. Impact
B. Roll
C. Vibratory
D. None of these