Mechanical Operations Optimum ratio of operating speed to critical speed of a trommel is 0.33-0.45 1.5-2.5 1.33-1.45 0.5-2 0.33-0.45 1.5-2.5 1.33-1.45 0.5-2 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations 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 0.5 0.62 0.68 0.58 0.5 0.62 0.68 0.58 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Cumulative analysis for determining surface is more precise than differential analysis, because of the Fact that screening is more effective Assumption that all particles in a single fraction are equal in size, is not needed None of these Assumption that all particles in a single fraction are equal in size Fact that screening is more effective Assumption that all particles in a single fraction are equal in size, is not needed None of these Assumption that all particles in a single fraction are equal in size ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations With increase in drum speed, in a rotary drum filter, the filtration rate Increases linearly Decreases Is not affected Increases Increases linearly Decreases Is not affected Increases ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations For crushing of solids, the Rittinger's law states that the work required for crushing is proportional to The change in volume due to crushing The new surface created The size reduction ratio None of these The change in volume due to crushing The new surface created The size reduction ratio None of these ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The cake resistance increases steadily with the time of filtration in a plate and frame filter employing constant __________ filtration. Both A & B Neither A nor B Pressure Rate Both A & B Neither A nor B Pressure Rate ANSWER DOWNLOAD EXAMIANS APP
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