ABE (CHAP01 AGRICULTURAL AND FOOD PRODUCTS)

Unhulled grain of Oryza sativa.

• a. Palay

• b. Paddy

• c. Rough rice

• d. All of the above

Fibrous layer of paddy when hull is removed and is commonly known as the silver skin of brown rice.

• a. Lemma and Palea

• b. Pericarp

• c. Bran layer

• d. None of the above

Angle with tangent equals the coefficient of friction between surfaces of the stored materials.

• a. Angle of contact

• b. Angle of friction

• c. Angle of repose

• d. All of the above

Coefficient of friction of rice to steel material is 0.41. What would be the minimum angle of the hopper required for the system?

• a. 22 deg

• b. 30 deg.

• c. 50 deg

• d. None of the above

Drying temperature of copra is ____.

• a. less than 50°C

• b. between 50° to 95°C

• c. above 95°C

• d. None of the above

Density of pig and poultry feeds is approximately ____

• a. 250 kg/m3

• b. 450 kg/m3

• c. 650 kg/m3

• d. None of the above

Slender type paddy has ____ length to width ratio.

• a. less than 2.0

• b. between 2 to 3

• c. more than 3.0

• d. None of the above

Free space between the husk of rough rice and the brown rice kernel greatly affects milling in the sense that ____

• a. the larger the free space the greater is the amount of broken grains

• b. the smaller the free space the lesser its abrasive effect to the rubber-roll huller

• c. the larger the free space, the lesser the breakage and losses

• d. All of the above

Uneven expansion and contraction of the inner and the outer layers of the grains that cause fissuring is a factor of ____.

• a. mechanical stress

• b. thermal stress

• c. physical stress

• d. All of the above

• e. None of the above

Property of a product that holds moisture when subjected to a prolong condition of known temperature and relative humidity.

• a. Dry matter loss

• b. Mass transfer coefficient

• c. Equilibrium moisture content

• d. None of the above