Mechanical Operations Pick out the wrong statement pertaining to the roll crushers. Both the rolls run necessarily at the same speed Maximum feed size determines the required roll diameter Reduction ratio and differential roll speed affect production rate & energy consumed per unit of surface produced For hard material's crushing, the reduction ratio should not exceed 4 Both the rolls run necessarily at the same speed Maximum feed size determines the required roll diameter Reduction ratio and differential roll speed affect production rate & energy consumed per unit of surface produced For hard material's crushing, the reduction ratio should not exceed 4 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations A suspension of glass beads in ethylene glycol has a hindered settling velocity of 1.7 mm/s, while the terminal settling velocity of a single glass bead in ethylene glycol is 17 mm/s. If the Richardson-Zaki hindered settling index is 4.5, the volume fraction of solids in the suspension is 0.6 None of these 0.4 0.1 0.6 None of these 0.4 0.1 ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations All resistances during washing of cake Remain constant Decreases Increases None of these Remain constant Decreases Increases None of these ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations A tube mill as compared to a ball mill All of these Gives finer size reduction but consumes more power Employs smaller balls Has larger length/diameter ratio (>2 as compared to 1 for ball mill) All of these Gives finer size reduction but consumes more power Employs smaller balls Has larger length/diameter ratio (>2 as compared to 1 for ball mill) ANSWER DOWNLOAD EXAMIANS APP
Mechanical Operations In a roll crusher, the specific power consumption and the production rate is affected by the Differential roll speed Reduction ratio Both A & B Neither A nor B Differential roll speed Reduction ratio Both A & B Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
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