Hammer Mill PAES 216-217: 2004

Question 1

classification system that indicates the uniformity of grind in the resultant product; sum of the weight fractions retained above each sieve divided by 100

Answer 1

fineness modulus

Question 2

device use for grinding which is a result of the impact between the particles and hammers, which are mounted on a shaft rotating along a horizontal axis

Answer 2

hammer mill

Question 3

ratio of the average size of input to the average size of the product

Answer 3

reduction ratio

Question 4

Ear corn (Coarse, Medium, Fine, Very Fine )

Answer 4

4.80, 3.60, 2.40, 1.80

Question 5

Shelled corn (Whole Grain) (Coarse, Medium, Fine, Very Fine )

Answer 5

6.00 , 4.80, 3.60 ,2.40, 1.80

Question 6

Barley (Whole Grain) (Coarse, Medium, Fine, Very Fine )

Answer 6

5.00, 4.10, 3.20, 2.30, 1.50

Question 7

Oats (Whole Grain) (Coarse, Medium, Fine, Very Fine )

Answer 7

4.50, 3.70, 2.90, 2.10, 1.40

Question 8

Soybeans (Whole Grain) (Coarse, Medium, Fine, Very Fine )

Answer 8

6.00, 4.80, 3.60, 2.40, 1.80

Question 9

Wheat (Whole Grain) (Coarse, Medium, Fine, Very Fine )

Answer 9

5.00, 4.10, 3.20, 2.30, 1.50

Question 10

Corn fodder (Coarse, Medium, Fine)

Answer 10

5.50, 4.20, 2.90

Question 11

Hay (Coarse, Medium, Fine, Very Fine )

Answer 11

4.00, 3.10, 2.20, 1.40

Question 12

The hammer mill should be used for the desired product having a reduction ratio of at least ___

Answer 12

50:1.

Question 13

The noise emitted by the hammer mill shall not be more than ___

Answer 13

96 db (A).

Question 14

all matters other than input materials such as sand, gravel, dirt, pebbles, stones, metal fillings, lumps of earth, clay, mud, chaff, straw, weed seeds and other crop seeds

Answer 14

foreign matter, impurity

Question 15

device used for milling which consists of rotating hammer(s) and a heavy perforated screen at the bottom

Answer 15

hammer mill

Question 16

weight of input materials per unit loading time into the hopper/intake pit, expressed in kilogram per hour

Answer 16

input capacity

Question 17

equipment with definite shaking motion used to sort size of the milled materials using standard screen sieves

Answer 17

laboratory sieve shaker

Question 18

quantity of input materials that the hammer mill can process to produce milled materials per unit of time, expressed in kilogram per hour

Answer 18

milling capacity

Question 19

weight of the milled materials collected, expressed in kilogram per hou

Answer 19

output capacity

Question 20

amount of input materials free of foreign matter expressed as percentage of the total weight of the sample

Answer 20

purity

Question 21

locally grown (as much as possible single variety)

Answer 21

Variety

Question 22

maximum moisture content of 14 %

Answer 22

Moisture Content

Question 23

Purity

Answer 23

98 %, minimum

Question 24

The amount of test material to be supplied shall be at least ___ of input capacity of the hammer mill.

Answer 24

75 %

Question 25

Dry the sample in the oven with temperature of ___.

Answer 25

103 oC + 1 oC for 72 h.