Mechanical Operations Cumulative analysis for determining surface is more precise than differential analysis, because of the Assumption that all particles in a single fraction are equal in size, is not needed Assumption that all particles in a single fraction are equal in size Fact that screening is more effective None of these Assumption that all particles in a single fraction are equal in size, is not needed Assumption that all particles in a single fraction are equal in size Fact that screening is more effective None of these ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Mixing mechanism employed in a pan mixer is by Mulling Kneading Dispersion None of these Mulling Kneading Dispersion None of these ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The power number for a stirred tank becomes constant at high Reynolds number. In this limit, the variation of power input with impeller rotational speed (N) is proportional to N° N¹ N³ N² N° N¹ N³ N² ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations What is the critical rotation speed in revolutions per second, for a ball mill of 1.2 m diameter charged with 70 mm dia balls? 2.76 0.5 1 0.66 2.76 0.5 1 0.66 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 size reduction ratio None of these The new surface created The change in volume due to crushing The size reduction ratio None of these The new surface created ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In case of a ball mill, Operating speed should be more than the critical speed Coarse feed requires a larger ball Fine feed requires a larger ball None of these Operating speed should be more than the critical speed Coarse feed requires a larger ball Fine feed requires a larger ball None of these ANSWER DOWNLOAD EXAMIANS APP
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