As per Taggart's formula, the capacity (kg/hr) of Jaw & Gyratory crushers (for gapes of 10 to 60 cms) is equal to (where, L = Length of feed opening, cms S = Maximum width of discharge opening, cms ) √LS 250 LS LS 93 LS TRUE ANSWER : ? YOUR ANSWER : ?
If dp is the equivalent diameter of a non-spherical particle, Vp its volume and sp its surface area, then its sphericity is Φs is defined by Φs = dp Sp/Vp Φs = Vp/dp sp Φs = 6 dp Sp/Vp Φs = 6 Vp/dp sp TRUE ANSWER : ? YOUR ANSWER : ?
Ore concentration by jigging is based on the difference in the __________ of the particles. Shape Wettability Specific gravities None of these TRUE ANSWER : ? YOUR ANSWER : ?
The process opposite to 'dispersion' is termed as the Sedimentation None of these Flocculation Filtration TRUE ANSWER : ? YOUR ANSWER : ?
For removal of very small amounts of precipitate from large volume of water, the most suitable filter is the __________ filter. Shell & leaf Plate & frame Sand Rotary vacuum TRUE ANSWER : ? YOUR ANSWER : ?
Dust collection efficiency of electrostatic precipitator can be as high as 99.9%. Maximum temperature and pressure of dust laden gas that can be cleaned in an electrostatic precipitator is respectively. 500°C and 50 atm 200°C and 5 atm 1000°C and 500 atm 1000°C and 10 atm TRUE ANSWER : ? YOUR ANSWER : ?
Run of mine (ROM) coal is crushed by a __________ for use in domestic ovens. Jaw crusher Ball mill Tube mill Hammer crusher TRUE ANSWER : ? YOUR ANSWER : ?
Sphericity for a non-spherical particle is given by (where, V and S are volume and surface area respectively of one particle. and, D = equivalent diameter of particle). S/V V/6D.S 6.V/D.S V/D.S TRUE ANSWER : ? YOUR ANSWER : ?
For separation of sugar solution from settled out mud, we use a __________ filter. Sparkler Centrifugal Rotary drum vaccum Plate and frame TRUE ANSWER : ? YOUR ANSWER : ?