ABE (CHAP10 MATERIAL HANDLING)

Movement of material in a processing plant in any direction may it be horizontal, vertical or any combination.

• Transporting

• Shipping

• Material handling

• All of the above

Commonly used material-handling equipment.

• Bucket elevator

• Screw conveyor

• Belt conveyor

• All of the above

Type of bucket elevator designed to handle grains.

• Centrifugal

• Positive (gravity)

• Continuous (direct gravity)

• None of the above

Which of the following is a good design feature for bucket elevators.

• Replaceable liners at point of wear.

• Belt tension take up.

• Provision to remove large foreign materials such as metals and stones.

• Clean out provision for booth.

• All of the above

What is the theoretical horsepower requirement of a bucket elevator with 545kg/min capacity and has 10.7m lift. The elevator is loaded down side.

• 2.19 hp

• 1.92 hp

• 2.91 hp

• None of the above

When a bucket elevator is to be fed at the downside section, instead of the upside section of the elevator booth, its power requirement will _____.

• decrease

• increase

• be the same

• None of the above

What is the theoretical rpm of a bucket elevator with 0.2m-diameter head pulley and a 0.1m bucket projection?

• 77 rpm

• 120 rpm

• 160 rpm

• None of the above

If the operational efficiency of the bucket elevator in Item 7 is 85% of the theoretical speed, what is the operation speed of the elevator?

• 65 rpm

• 102 rpm

• 136 rpm

• None of the above

What is the theoretical horsepower requirement of a bucket elevator with 740kg/min capacity and 12m lift and is loaded up side?

• 2.3 hp

• 3.5 hp

• 4.1 hp

• None of the above

A drag, flight or scraper conveyor.

• Screw conveyor

• Chain conveyor

• Belt conveyor

• None of the above