Crop Processing

Question 1

What do you call a milled rice grain whose length is less than ¾ of the length of paddy rice?

Answer 1

Broken rice

Question 2

What value of relative humidity for the ambient air represents the highest drying potential in in-storage drying?

Answer 2

60%

Question 3

A kind of primary crop processing where moisture is remove from grains to prevent the multiplication of microorganisms and pests such as weevils.

Answer 3

Drying

Question 4

What type of equipment is recommended to reduce the size of feed grains?

Answer 4

Hammer mill

Question 5

Under conditions of ideal in-storage drying, what is the relative humidity of air going out of the column of grains being dried?

Answer 5

100% RH

Question 6

What will you do to increase the size of hays handled by a chopper?

Answer 6

Increase the feeding rate

Question 7

This is the part of a heated air dryer that forces the circulation of heated air in the column of grains.

Answer 7

Blower

Question 8

It is a type of dryer in which the material being dried moves through the drying chamber in a substantially continuous stream and is discharged without being recirculated

Answer 8

Continuous flow dryer

Question 9

In a rubber roll huller rice mill, too much broken rice is found in the milled product. The grains were at the correct moisture content prior to milling. What could possibly be wrong with the rice mill?

Answer 9

High differential velocity between the rollers

Question 10

The rice product obtained after the removal of the hull is _____.

Answer 10

Brown rice

Question 11

Before grinding corn in a feed mill, it was discovered that the corn kernels is mixed with large quantities of ‘silks’ and other light materials of small sizes such as grated corn husks and cobs. What process will you recommend as a preparatory process before grinding the corn?

Answer 11

Pre-cleaning by aspiration

Question 12

How will you control the size of grounded feed material using a hammer mill?

Answer 12

By selecting the appropriate size of the screen perforations

Question 13

The grain stored in a bin has a 14% moisture content wet basis. What is the equivalent moisture content on a dry weight basis?

Answer 13

16.3%

Question 14

It is a rice from which only the husk has been removed and the bran layer still remains making it more nutritious than milled rice.

Answer 14

Brown rice

Question 15

It is a measure of the ability of a milling machine to remove the hulls.

Answer 15

Coefficient of hulling

Question 16

It is the means by which food is preserved in its original fresh state

Answer 16

Refrigeration

Question 17

It is a mechanical grain dryer wherein a fixed volume of grain is held in the drying chamber without stirring until the grain reaches the desired moisture content.

Answer 17

Batch type dryer