Mechanical Operations Pick out the wrong statement pertaining to the roll crushers. Maximum feed size determines the required roll diameter For hard material's crushing, the reduction ratio should not exceed 4 Reduction ratio and differential roll speed affect production rate & energy consumed per unit of surface produced Both the rolls run necessarily at the same speed Maximum feed size determines the required roll diameter For hard material's crushing, the reduction ratio should not exceed 4 Reduction ratio and differential roll speed affect production rate & energy consumed per unit of surface produced Both the rolls run necessarily at the same speed ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations To produce talcum powder, use Ball mill Jet mill Hammer mill Pin mill Ball mill Jet mill Hammer mill Pin mill ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Which of the following is the most suitable for cleaning of fine coal dust (<0.5 mm)? Spiral separator Trough washer Froth floatation Baum jig washer Spiral separator Trough washer Froth floatation Baum jig washer ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In case of a revolving mill, wet grinding compared to dry grinding Requires more energy Has less capacity Complicates handling & classification of the product None of these Requires more energy Has less capacity Complicates handling & classification of the product None of these ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations Where the density difference of the two liquid phase to be separated is very small (as in milk cream separator), the most suitable separator is a Sharpies supercentrifuge Disc bowl centrifuge Batch basket centrifuge Sparkler filter Sharpies supercentrifuge Disc bowl centrifuge Batch basket centrifuge Sparkler filter ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations The value of work index does not change materially from one equipment to another. If the value of work index determined for close circuit grinding is Wi, then the same for open circuit grinding will be Wi 3.34 Wi 1.34 Wi 0.5 Wi Wi 3.34 Wi 1.34 Wi 0.5 Wi ANSWER DOWNLOAD EXAMIANS APP
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