Discussion
Consider the following pairs of elevator feature and its purpose:
Boot - Where buckets pick up the material
Head - Where discharge takes place
Centrifugal discharge - Requires a relatively high belt speed
Continuous buckets - Used where the highest speeds are wanted
How many of the pairs given above are correctly matched?
Answer: D
Correct answer: Only three
Three pairs are right. The boot is where the buckets pick up material at the bottom of the elevator; the head is where discharge takes place; and centrifugal discharge requires a relatively high belt speed to throw the material clear.
The fourth is wrong. Continuous buckets, set close together so material slides out over the back of the bucket ahead, are used at low speed - precisely where gentle handling of a fragile product matters more than throughput.
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