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Question
Pick out the wrong statement pertaining to the roll crushers?
Options:
A .  Maximum feed size determines the required roll diameter
B .  For hard material’s crushing, the reduction ratio should not exceed 4
C .  Both the rolls run necessarily at the same speed
D .  Reduction ratio and differential roll speed affect production rate & energy consumed per unit of surface produced
Answer: Option C
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
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