The value of ‘angle of nip’ is generally about__________________?
The value of ‘angle of nip’ is generally about__________________?
A. 16°
B. 32°
C. 52°
D. 64°
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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__________________?
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__________________?A. Bronze
B. Stainless steel
C. Flint or porcelain
D. ConcreteA centrifugal filtration unit operating at a rotational speed of w has inner surface of the liquid (density ρL) located at a radial distance R from the axis of rotation. The thickness of the liquid film is δ and no cake is formed. The initial pressure drop during filtration is ___________________?
A centrifugal filtration unit operating at a rotational speed of w has inner surface of the liquid (density ρL) located at a radial distance R from the axis of rotation. The thickness of the liquid film is δ and no cake is formed. The initial pressure drop during filtration is ___________________?A. ½w2 . R2 . ρL
B. ½w2 . δ2 . ρL
C. ½w2 . δρL (2R + δ)
D. ½w2 . R . ρL(R + 2δ)In case of a plate and frame filter press, filtrate flow through the cake follows _______________ flow?
In case of a plate and frame filter press, filtrate flow through the cake follows _______________ flow?A. Plug
B. Turbulent
C. Laminar
D. None of theseAccording to Bond crushing law, the work required to form particle of size ‘D’ from very large feed is (where (S/V)p and (S/V)f are surface to volume ratio of the product and feed respectively) ?
According to Bond crushing law, the work required to form particle of size ‘D’ from very large feed is (where (S/V)p and (S/V)f are surface to volume ratio of the product and feed respectively) ?A. (S/V)p
B. √(S/V)p
C. (S/V)2p
D. (S/V)fSize reduction of asbestos and mica is done by____________________?
Size reduction of asbestos and mica is done by____________________?A. Hammer mills
B. Rod mills
C. Gyratory crushers
D. Crushing rollsRun of mine (ROM) coal is crushed by a _________________________ for use in domestic ovens?
Run of mine (ROM) coal is crushed by a _________________________ for use in domestic ovens?A. Jaw crusher
B. Hammer crusher
C. Ball mill
D. Tube mill