Mechanical Operations For efficient grinding, ball mills must be operated At a speed less than the critical speed At a speed equal to the critical speed At a speed more than the critical speed With minimum possible small balls At a speed less than the critical speed At a speed equal to the critical speed At a speed more than the critical speed With minimum possible small balls ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following screens has the maximum capacity? Shaking screen Vibrating screen Trommels Grizzlies Shaking screen Vibrating screen Trommels Grizzlies ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Number of particles in a crushed solid sample is given by (where, m = mass of particles in a sample, Vp = volume of one particle, ρ= density of particles) Vp/m . ρ M . ρ/Vp M/ρ . Vp M . Vp/ρ Vp/m . ρ M . ρ/Vp M/ρ . Vp M . Vp/ρ ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Run of mine (ROM) coal is crushed by a __________ for use in domestic ovens. Tube mill Jaw crusher Ball mill Hammer crusher Tube mill Jaw crusher Ball mill Hammer crusher ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following minerals is not subjected to magnetic separation method? Chromite Rutile Siderite Galena Chromite Rutile Siderite Galena ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following is not accomplished by agitation of liquids in agitators? Suspending solid particles Blending of immiscible liquids Dispersing immiscible liquid in form of emulsion Dispersing gas in liquid Suspending solid particles Blending of immiscible liquids Dispersing immiscible liquid in form of emulsion Dispersing gas in liquid ANSWER DOWNLOAD EXAMIANS APP
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