WEEK 1 PART 3 Flashcards by Rai Olino

1000 kg/h of milk is heated in a heat exchanger from 45oC to 72oC. Water is used as the heating medium. It enters
the heat exchanger at 90oC and leaves at 75oC. Calculate the mass flow rate of the heating medium, if the heat
losses to the environment are equal to 1 kW. The heat capacity of water is given equal to 4.2 kJ/kgoC and that of
milk 3.9 kJ/kgoC.
A. 1718.40 kg/h
B. 1720.60 kg/h
C. 1724.40 kg/h
D. 1728.60 kg/h

D. 1728.60 kg/h

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A cantilever beam subjected to point load at its free end, then the shape of moment diagram is:
A. Triangular
B. Rectangular
C. Parabolic
D. Trapezoidal

A. Triangular

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Based on PAES 419:2000, the recommended lighting intensity in lux (lumen/m2) for fruit and vegetable
processing plant are: 100 for outside the building, 200 for general indoor locations, and ___ for working tables.
A. 300
B. 400
C. 500
D. 600

C. 500

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What is the electrical energy consumption of a 15-kw vermin cast production shredder plugged in a 220-volt
source if it requires 2 hours to shred 1.5 tonnes of farm waste?
A. 0.02 kWh/kg
B. 0.2 kWh/kg
C. 2.0 kWh/kg
D. 0.002 kWh/kg

A. 0.02 kWh/kg

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This is a type of manure that has 10% to 20% total solids
A. Liquid
B. Semi-Solid
C. Slurry
D. Solid

B. Semi-Solid

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If 9 tons of a product is to be dried from 24% to 14%, the final weight of the product would be:
A. 6765.3 kg
B. 7953.4 kg
C. 8837.3 kg
D. 9741.4 kg

C. 8837.3 kg

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This method of heat transfer occurs when energy is transmitted by direct contact between the molecules of a single
body or between the molecules of two or more bodies in good thermal contact with each other.
A. Conduction
B. Convection
C. Radiation
D. Connection

A. Conduction

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A machine used to remove bran .
A. Polisher
B. Husker
C. Whitener
D. None of the Above

C. Whitener

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Postharvest losses referring to those that result in the loss of the amount of a product.
A. Production Losses
B. Postharvest Losses
C. Quantity Losses
D. Quality Losse

C. Quantity Losses

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Parts of the total solids that pass through the filter after filtration.
A. Fixed Solids
B. Volatile Solids
C. Suspended Solids
D. Dissolved Solids

D. Dissolved Solids

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t is a milled corn kernel with particle size between 1.10mm to 1.19 mm.
A. Corn Grit #12
B. Corn Grit #14
C. Corn Grit #16
D. Corn Grit #18

C. Corn Grit #16

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What is the maximum CPES rating for workmanship during construction?
A. 0.15
B. 0.04
C. 0.5
D. 0.4

D. 0.4

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What is the maximum CPES rating for time upon completion of a project?
A. 0.2
B. 0.3
C. 0.4
D. None of the Abov

B. 0.3

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If a material had a modulus of elasticity of 2.1×106 kgf/cm2 and a modulus of rigidity of 0.8×106 kgf/cm2 then the
approximate value of the Poisson’s ratio of the material would be:
A. 0.27
B. 0.31
C. 0.34
D. 0.26

B. 0.31

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Space inside or outside the digester for the collection and storage of biogas
A. Sludge Tank
C. Plenum
D. Gas Chamber

D. Gas Chamber

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A spherical shaped vessel of 1.2 m diameter is 100 mm thick. Find the rate of heat leakage, if the temperature
difference between the inner and outer surfaces is 200℃. Thermal conductivity of material is 0.0833 W/m℃.
A. 987 W
B. 879 W
C. 789 W
D. 1109 W

B. 879 W

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A swine pen was constructed having a floor area of 36 m2. How many dry sows can fit inside the pen?
A. 30
B. 28
C. 24
D. 20

D. 20

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A furnace is made of a red brick wall of thickness 0.5 m and conductivity 0.7 W/mK. For the same heat loss and
temperature drop, this can be replaced by a layer of material having a conductivity 0.28 W/mK and thickness of:
A. 0.5 m
B. 0.1 m
C. 0.2 m
D. 0. 3 m

C. 0.2 m

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Smallest known quantity of electricity.
A. Ohm
B. Charge
C. ECU
D. Amp

C. ECU

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. A 3 hectare hillside farm is to be energized. It is 20 meters below a river having a dependable summer discharge
of 50 liters/second. Which electricity source will you use recommend?
A. Pico Hydro
B. Mini Hydro
C. Micro Hydro
D. Small Hydro

A. Pico Hydro

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What solid fractions are determined if a sample is filtered using a mechanical sieve of determined mesh size,
placed into a crucible, dried in an oven at 103°C for 24 hours, then placed in a furnace for one hour at 550°C?
A. Total Solids
B. Volatile Solids
C. Fixed Solids
D. Suspended Solids

C. Fixed Solids

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It is a coarse powder from outer covering of the corn kernel removed during milling process.
A. Cob
B. Grit
C. Bran
D. Pericar

C. Bran

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. By-product in corn milling refers to ______?
A. corn grit # 20 and # 24
B. corn grit # 16 and #18
C. corn grit # 12 and #14
D. All of the above

A. corn grit # 20 and # 24

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What is the body or substance that acts as cooling effect by absorbing heat from another body or substance?
A. Absorbant
B. Coolant
C. Refrigerant
D. None of the Abo

C. Refrigerant

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25. It is the process of preserving food materials in hermetically-sealed container which has been sterilized with the use of heat. A. Drying B. Packing C. Steaming D. Canning

D. Canning

. The first principle of HACCP A. Identify/Assess Hazards B. Determine CCPs C. Monitoring Systems for CCPs D. None of the Above

A. Identify/Assess Hazards

One ton of refrigeration (1TR) means that the heat removing capacity is A. 21 kJ/min B. 210 kJ/min C. 420 kJ/min D. 620 kJ/min

B. 210 kJ/min

As an AB Engineer, you were asked to design the steps to a mezzanine floor that is 2.7 m high. If the steps span 4.3 meters long, how long should the stair stringers be? A. 4.5 meters B. 7.0 meters C. 5.08 meters D. 1.6 meters

C. 5.08 meters

What is the volume of the biogas digester needed to accomodate 2000 heads of pig (18 to 36 kg), if the retention period was 20 days. The available manure is 2.55 kg/animal/day A. 201 m3 B. 204 m3 C. 207 m3 D. 210 m

B. 204 m3

For a balloon type digester, _____% of the digester volume should be occupied by the slurry. A. 75% B. 80% C. 85% D. None of the Above

B. 80%

Cooking temperature that destroys most bacteria in foods A. 100 deg C B. 74 deg C C. 110 deg C D. None of the Abov

B. 74 deg C

32. An auxillary device of a rice mil which receives the remaining small bran particles of milled rice and gives a glossy appearance to the product. A. Whitener B. Grader C. Polisher D. Huller

C. Polisher

Rice grain from which the hull, the germ, and the bran layers have been completely removed A. Regular Milled B. Well-milled C. Over-milled D. Under-milled

C. Over-milled

Rice grain from which the hull, the germ, the outer bran layers and the greater part of the inner bran layers have been removed but part of the lengthwise streaks of the bran layers may still be present on 21% to 40% of the sample grains. A. Regular Milled B. Well-milled C. Over-milled D. Under-milled

A. Regular Milled

A rice mill machine was tested using 1 cavan of paddy with 95% purity. After testing, the milled riced weighed about 39 kg. What is the % milling recovery. A. 78% B. 87% C. 95% D. 82%

D. 82% (Milled Rice/Wt of Paddy) = 39kg/(1 cavan x 50kg/1 cavan) = 0.78/0.95 = 82%

It is the extent by which the bran layer of brown rice is removed as a result of whitening A. Milling Recovery B. Milling Percentage C. Milling Degree D. Milling Index

C. Milling Degree

The figure below shows a steel rod of 25 mm2 cross sectional area. It is loaded at four points, K, L, M and N. Assume Esteel = 200 GPa. The total change in length of the rod due to loading is: A. 1 μm B. -10 μm C. 16 μm D. -20 μm

16 μm C.

A power bank can provide 20 joules of energy while moving 10 coulombs of charge. What is the potential difference between the terminals of the power bank? A. 1 V B. 2 V C. 3 V D. None of the Abov

B. 2 V

States that the voltage or potential difference between two points is directly proportional to the current or electricity passing through the resistance and directly proportional to the resistance of the circuit. A. Ohm’s Law B. Kirchoff’s Law C. Avogadro’s Law D. None of the Above

A. Ohm’s Law

A farmhouse requires a minimum conductor size of 2 mm2 which is equivalent to AWG ____. A. AWG 10 B. AWG 12 C. AWG 14 D. AWG 16

C. AWG 14

A farmstead has its farthest load located 350 linear meters from a single phase power source. What length of the wire in meters should be used in the voltage loss computation? A. 350 B. 450 C. 650 D. 700

D. 700

A log has 28 inches diameter and 20 feet length. What is the net total number of board foot that can be obtained from the log? A. 560 bd-ft B. 605 bd-ft C. 650 bd-ft D. 450 bd-ft

B. 605 bd-ft

group of AB engineers were to donate 4 pcs. of workbenches for the ABE REVIEW. The engineers estimated 8 pcs. of 2"x4"x12' and 6 pcs. of 2"x2"x12’ for each workbench. How many board feet of lumber would they need per piece of the workbench? A. 82 bd-ft B. 84 bd-ft C. 88 bd-ft D. None of the above

C. 88 bd-ft

How much money do they need to purchase all lumber materials, if a board foot of lumber costs 24 pesos? A. 8484 php B. 8448 php C. 8840 php D. 8480 php

. 8448 php

It is the distance between the underside of the rafter where it meets the outer stanchion and the internal floor of the building. A. Total Height B. Apex Height C. Column Height D. Eave’s Height

D. Eave’s Height

It is a structural member where the metal roofing sheet is fixed. A. Trusses B. Rafter C. Purlins D. None of the above

. Purlins

The structural member of a timber structure that supports the wood flooring. A. Girder B. Beam C. Joist D. None of the above

C. Joist

Process of manufacturing that ensures quality and safety built into every step of the manufacturing process. A. GMP B. HACCP C. GAP D. All of the above

A. GMP

Drying temperature of copra is ______? A. Less than 50 degrees Celcius B. Between 50 to 95 degrees Celcius C. More than 95 degrees Celcius D. None of the above

B. Between 50 to 95 degrees Celciu

The board used in Arduino open-source electronics platform based on easy-to-use hardware and software which is able to read inputs like light on a sensor, temperature reading, a finger on a button, or a Twitter message and can turn these inputs into outputs like activating a motor, turning on an LED, turning on a solenoid valve, or publishing something online. A. Microcontroller B. Integrated Circuit C. Microchip D. Switch board

A. Microcontroller

One ton refrigeration is equivalent to: A. 50.4 kcal/min B. 50.4 kcal/hr C. 80.4 kcal/min D. 80.4 kcal/hr

A. 50.4 kcal/min

Also called as burr or plate mills, they consist essentially of two roughened plates, one stationary, the other rotating. The material is fed between the plates and is reduced by crushing and shear. A. Hammer Mill B. Roller Mill C. Attrition Mill D. None of the above

C. Attrition Mill

The commodity damage and deductions across the food supply chain from harvesting of crop until its consumption. A. Production losses B. Postharvest losses C. Food insecurity D. Production byproduct

B. Postharvest losses

The ratio of momentum diffusivity to thermal diffusivity. A. Prandtl Number B. Grashof Number C. Nusselt Number D. Reynold’s Number

A. Prandtl Number

The ratio of gravitational forces to the shear forces in a fluid A. Prandtl Number B. Grashof Number C. Nusselt Number D. Reynold’s Number

D. Reynold’s Number

1000 kg/h of milk is heated in a heat exchanger from 45oC to 72oC. Water is used as the heating medium. It enters the heat exchanger at 90oC and leaves at 75oC. Calculate the mass flow rate of the heating medium, if the heat losses to the environment are equal to 1 kW. The heat capacity of water is given equal to 4.2 kJ/kgoC and that of milk 3.9 kJ/kgoC. A. 1718.40 kg/h B. 1720.60 kg/h C. 1724.40 kg/h D. 1728.60 kg/h

D. 1728.60 kg/h

This is also called as subsurface clearing, removal, and disposal of trees below the ground surface. A. Clearing B. Grubbing C. Excavation D. Earthwork

B. Grubbing

A device that converts one type of energy into another type A. Transducer B. Transformer C. Power Converter D. None of the Above

A. Transducer

Ninong Ry used his 220 V – 5A electric cooking range for 30 minutes to cook his 2-hour pre-marinated crispy pata. How much energy does this activity require for the cooking range in kiloJoules? A. 1980 kJ B. 1100 W C. 1776.68 BTU D. 500 Watt-hr

A. 1980 kJ

The Poisson’s ratio is equal to: A. Lateral Strain /Longitudinal Strain B. Longitudinal Strain x Lateral Strain C. Longitudinal Strain / Lateral Strain D. None of the above

A. Lateral Strain /Longitudinal Strain

Under PAES 418:2002, washing of tomato is done by using ____% chlorox solution applied by dipping, spraying or wiping with a damp cloth then drying the fruit before packing. A. 0.5% B. 1.0% C. 1.5% D. 2.0

B. 1.0%

What is the percent moisture content in dry basis of a rice sample having 100 grams and 82 grams wet and dry weights? A. 18 B. 21 C. 22 D. 25

C. 22 MCdb = (100-82)/82 = 22%

A dried palay sample was milled using a rubber roller laboratory rice mill. After milling, the weight of whole milled grains, broken milled grains, and hull were 25 g, 305 g and 170 g, respectively. The milled rice was classified as Class A. Determine the percent head rice. A. 5% B. 6.5% C. 7.6% D. None of the above

A. 5%

What is the heat loss per sq. ft. of the 9-inch-thick wall of a brick kiln made from a material with thermal conductivity of 0.18 BTU/hr-ft-degrees F? The outside and inside temperatures are 1500oF and 400oF, respectively. A. 224 BTU/hr-ft2 B. 242 BTU/hr-ft2 C. 246 BTU/hr-ft2 D. 264 BTU/hr-ft2

D. 264 BTU/hr-ft2 Q = kAT/x = (0.18(1500-400))/9 in x 1 ft/12 in = 264 BTU/hr-ft2

A wastewater sample from a swine farm has the following laboratory analysis: TS = 200 mg/L; TDS = 30 mg/L; FSS = 30 mg/L. What is the Volatile Suspended Solids? A. 30 mg/L B. 140 mg/L C. 170 mg/L D. 200 mg/L

B. 140 mg/L VSS = TSS - FSS TSS = TS - TDS VSS = 200 - 30 - 30 = 140

A Jatropha oil expeller was loaded with 2.2 tonnes dried Jatropha seeds. It produced 700 kg of crude oil in 5 hours. What is its Jatropha cake production rate? A. 700 kg/h B. 500 kg/h C. 400 kg/h D. 300 kg/h

D. 300 kg/h

. PAES 419:2000 requires that food grains stored in a warehouse for bagged storage are in the range of 12 to ____ % moisture content prior to storing. A. 13% B. 14% C. 15% D. 16%

B. 14%

Which one is not a part of a vertical feed mixer? A. Conveyor B. Hopper C. Discharge Chute D. Screw

A. Conveyor

A steel bar of 40 mm × 40 mm square cross-section is subjected to an axial compressive load of 250 kN. If the length of the bar is 2 m and E = 200 GPa, the elongation of the bar will be: A. 1.25 mm B. 1.56mm C. 1.65 mm D. 1.52 mm

B. 1.56mm D = PL/AE

0. Continuous flow dryer wherein the flow of air is transverse to the direction of flow of the grain being dried. A. Counter-flow type B. Cross-flow type C. Concurrent-flow type D. None of the above

B. Cross-flow type

Term used for the internal organs of poultry suitable for cold storage A. Carcass C. Gills D. None of the above B. Giblets

B. Giblets

2. Controlled decomposition of organic matter by micro organisms, mainly bacteria and fungi, into a humus-like product. A. Digesting B. Sedimentation C. Scouring D. Composting

D. Composting

Liquid waste, partially or completely treated, flowing out of a reservoir, basin, or wastewater treatment plant. A. Outflow B. Discharge C. Effluent D. All of the above

C. Effluent

Lagoons that can function as aerobic or anaerobic depending on the environment A. Hybrid Lagoon B. Mixed Lagoon C. Facultative Lagoon D. None of he above

C. Facultative Lagoon

Lagoons should be located on soil with at least ___% clay content. A. 10% B. 12% C. 13% D. 15%

D. 15%

. This refers to the operation of suspending the carcass for particular operation. A. Sienging B. Scalding C. Gambreling D. Pithing

C. Gambreling

A 300 gram-cattle manure sample is oven-dried for 24 hours at 105°C. After oven drying, the sample weighs 100 grams. The dried sample is then heated at 600 °C. After heating, 30 grams of sample remain. Carbon Nitrogen Ratio of manure sample is 18:1. Determine the amount of Total Volatile Solids in the sample: A. 100 grams B. 70 gram C. 40 grams D. 30 grams

B. 70 gram

In the above example, determine the estimated amount of nitrogen in the sample. A. 2.14 g B. 2.15 g C. 2.16 g D. 2.17 g

A. 2.14 g

Type of thresher wherein the panicles of the cut plants are fed into the threshing chamber while the stalks are mechanically or manually held during the threshing operation. A. Axial-flow B. Throw-in C. Hold-on D. Throughflow

C. Hold-on

What is the duration of continuous test for thresher. A. 30 minutes B. 15 minutes C. 1 hour D. None of the above

C. 1 hour

. As an engineer, what thickness of the portland cement concrete pavement will you use in a two lane farm to market road? A. 10 cm B. 15 cm C. 20 cm D. 25 cm

C. 20 cm

In farm to market roads, the minimum radius of curvature for flat, rolling and mountainous terrains, respectively, shall be ________. A. 500, 150, 50 m B. 50, 150, 500 m C. 5, 150, 500 m D. 500, 150, 5 m

A. 500, 150, 50 m

Estimate the number of hollow blocks required for the portion of a wall of a farm workshop which is 3.5 meters high from the finished floor line and 25 meters long (excluding columns and beams). From the finished floor line, the wall is extended 0.8 meters lower for the wall footing. Add a contingency of 10%. A. 1399 CHB B. 1400 CHB C. 1538 CHB D. 1358 CHB

C. 1538 CHB

4. In concrete canal construction, how many 40 kg bags of cement are needed for a 20 km lateral channel if it requires 0.6 cubic meter concrete per linear meter? Use 5% safety factor. A. 113,400 B. 131,400 C. 134,100 D. None of the above

A. 113,400

What is the cement budget for 18 km canal requiring 2/3 cubic meter concrete per linear meter? Cement costs P 200/bag while transport costs Php 10/bag. Use 5% safety factor A. 22,825,907 pesos B. 23,825,907 pesos C. 23,925,807 pesos D. None of the above

B. 23,825,907 pesos

Based on PAES 419:2000, the recommended optimum stack height for storage of wheat, barley and maize grains. A. 4.27 m B. 4.75 m C. 4.57 m D. None of the above

C. 4.57 m

. A defect in a piece of wood caused by the presence of a branch. A. Wane C. Knot D. Pith B. Check

C. Knot

The component of a rice mill that removes the remaining bran on the milled rice and produces a glossy appearance. A. Rubber-roll B. Whitener C. Polisher D. Impeller

C. Polisher

Determine the coefficient of wholeness of a rice mill with 72 grams weight of whole rice derived from a 100 gram sample. A. 0.65 B. 0.72 C. 0.89 D. 0.90

B. 0.72

How many tonnes of agricultural waste is needed annually to optimally operate a 27-ampere 9-kw vermi-cast production shredder having a capacity of 0.27 tons of waste per hour? It optimally operates 16 hours daily during the 3-month peak sunny months and 8 h/day at 26 days/month for the rest of the year. A. 810 tons/year B. 512 tons/year C. 894 tons/year D. 521 tons/yea

C. 894 tons/year

Favorable C:N Ratio for composting A. 25:1 to 40:1 B. 35:1 to 40:1 C. 25:1 to 35:1 D. None of the above

A. 25:1 to 40:1

It is otherwise known as the Philippine Clean Water Act of 2004 A. RA 8559 B. RA 8749 C. RA 9725 D. RA 9003

C. RA 9725

his is issued by the DENR to certify that a new vehicle or vehicle type meets the mandatory requirements in terms of pollution prevention as per RA 8749. A. Certificate of Compliance B. Environmental Permit C. Certificate of Conformity D. Environmental Seal

C. Certificate of Conformity D

The values of enthalpy at the beginning of compression, at the end of compression, and at the end of condensation are 185 kJ/kg, 210 kJ/kg, and 85 kJ/kg, respectively. What is the value of the COP of the vapor compression refrigeration system? A. 0.25 B. 5.4 C. 4 D. 1.25

C. 4 COP =Q/W Q = hevap -hcon W = hout - hin (185-85)/(210-185) = 4

A sample of palay has a MC of 80% dry basis. What is the MC of said sample in wet basis. A. 41% B. 42% C. 43% D. 44%

D. 44%

The required number of sets of building plans, specifications and other documents prepared during application of building permit. A. 1 B. 3 C. 5 D. 4

C. 5

sample of palay has a MC of 24% wet basis. What is the MC of said sample in dry basis. A. 31% B. 32% C. 33% D. 34%

B. 32%

The diameter of the seal of ABE is ____ A. 42 mm B. 44 mm C. 45 mm D. 40 mm

A. 42 mm

. The load added to the cooling equipment when cooled air is displaced by outdoor air entering through the cracks around doors and windows when doors open A. Product Load B. Infiltration Load C. Transmission Load D. Internal Lo

B. Infiltration Load

An instrument used in measuring wind speed. A. Barometer B. Anenometer C. Hygrometer D. Speedometer

B. Anenometer

WEEK 1 PART 3 Flashcards

(100 cards)