The amount of grain moisture removed by a cubic meter of air in a drying system is 0.0015 kg. What is the volume of air, in cubic meters, required to remove 120 kg of moisture from the grains?
80,000
This is the ratio of the of the heat released by the fuel to the theoretical heat available from the fuel. A. combustion efficiency B. burner efficiency C. furnace efficiency D. None of the above
combustion efficiency
It is the term used to describe the processing of agricultural products without changing its form like drying and cooling. A. Primary Processing B. Refrigeration C. Secondary Processing D. Dehydration
Primary Processing
In milling, what part of the rice grain is removed during the whitening process?
bran layer
Which of the following rice mill products have the smallest size? A. head rice B. brown rice C. broken rice D. brewer's rice
brewer's rice
A blower elevates forage into a 12.2 m high silo at the rate of 455 kg/ minute. Determine the input power of the blower if its efficiency is 40%.
2.3 kW
It is an auxiliary part of modern rice mills which is used to removed light materials like chaffs and unfilled grains. A. destoner B. paddy separator C. whitener D. aspirator
aspirator
As recommended by the PAES, the performance testing of rubber roll mills shall be conducted for at least how many test trials?
two test trials
This property of any material refers to the amount of heat absorbed or released per unit weight of the material per unit rise or drop in temperature.
Specific Heat
Four bags of paddy rice (50 kg per bag) were milled by a mobile ‘baby cono’. The output consists of 118 kg of head rice and 8 kg of brokens. What is the head rice recovery?
59 %
The heat needed to remove moisture from grains by evaporator is _____________. A. latent heat of fusion B. latent heat of vaporization C. sensible heat D. heating value
latent heat of vaporization
What value of relative humidity for the ambient air represents the highest drying potential in in-storage drying? A. 60 % B. 70 % C. 80 % D. 100 %
60 %
What controls the maximum size of feeds in a hammer mill? A. hammer angular speed B. hammer peripheral speed C. size of sieve perforation D. power source
size of sieve perforation
Three cavans of rough rice (50 kg per cavan) was milled by a mobile ‘baby cono’. Output: 95 kg of whole rice and 7 kg of brokens. What is the milling recovery?
68 %
Type of drying system where ambient air is forced through a column of grains. A. mechanical drying B. heated air drying C. unheated air drying D. flash drying
unheated air drying
The minimum heating efficiency of indirect-fired, biomass-fed mechanical grain dryer is _______%? A. 50 B. 65 C. 75 D. 90
50
What is the maximum allowable increase in crack grains for batch-type mechanical rice dryers? A. 2% B. 3 % C. 5 % D. 7%
5 %
What machine is used to reduce the size of forage before storage to reduce its bulk? A. feed mill B. chopper C. sheller D. windrower
chopper
What do you call the product of rice milling when only the outer covering of the rough rice has been removed? A. brown rice B. milled rice C. head rice D. broken rice
brown rice
The static pressure inside a grain dryer can be measured through the use of what instrument? A. thermometer B. manometer C. blower D. conveyor
manometer
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