AREA 3 Flashcards by Rhealene Cahigas

A wooden pole (SG = 0.65), 9 cm by 9 cm by 5 m long, hangs vertically from a string in such a way that 3 m is submerged
in water and 2 m is above the surface. What is the tension in the string?.
A. 19.87 N C.18.96 N
B.17.89 N D.16.97 N

A. 19.87 N

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A truck with axle loads of 40 kN and 60 kN on a wheel base of 5 m rolls across a 10-m span. Compute for the value of “x”.
A. 1.5 m C. 2.5 m
B. 2 m D. 3 m

B. 2 m

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For class B mix, give the bags of 40-kg cement needed per cubic meter of concrete.
A. 12 C. 8.5
B. 9 D. 6

C. 8.5

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A hole, as shown in the figure below, is to be punched out of a plate having a shearing strength of 275 MPa. The compressive
stress in the punch is limited to 350 MPa. Compute the maximum thickness of plate in which a hole 75 mm in diameter can
be punched.
A. 28.36 mm C. 23.86 mm
B. 26.83 mm D. 36.38 mm

C. 23.86 mm

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What is the total board foot of 5 pieces of 2-in x 6-in x 14-feet wood?.
A. 50 bd ft C. 70 bd ft
B. 60 bd ft D. 85 bd ft

C. 70 bd ft

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A man would like to build a rectangular room having a 5 m x 4 m x 3m (L x W x H) dimension. Estimate the number of
concrete hollow blocks needed (exclude the foundations).
A. 750 C. 575
B. 675 D. 225

B. 675

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A farmer would like to cement the flooring of his warehouse with a total volume of 150 m3
. Using 20 liters of water for
every bag of cement and a 1:3:6 mixture, how many bags of cement are needed?
A. 6 C.85
B. 830 D. 8,000

D. 8,000

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Suppose that the wooden beam to be used is circular in shape, what will be its section modulus if its diameter is 20 cm?
A. 785.4 cm3 C. 98.2 cm3
B. 7068.6 cm3 D. 14137.17 cm3

A. 785.4 cm3

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A 100-kg man is standing in an elevator. Determine the force of the elevator onto the man if the elevator is accelerating
upward at 2.5 m/s2
?
A. 700 N C. 500 N
B. 600 N D. 450 N

A. 700 N

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What is the maximum CPES rating for time upon completion of a project?
A. 0.20 C. 0.40
B. 0.30 D. 0.50

B. 0.30

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This is the most common type of farmstead where buildings are located sufficiently far apart to allow adequate room for
road drives and yards, reasonable fire safety and sanitation, yet sufficiently close together to be effective for farm operation.
A. Concentrated type C. Suburban type
B. Distributed type D. Plantation type

B. Distributed type

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How many years of experience in the actual implementation of project is needed to be an evaluator in CPES?
A. 2 C. 4
B. 3 D. 5

D. 5

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.Command used to control and manage the drawings in autoCAD for different purposes.
A. Isoplane C. Dynamic UCS
B. Grid Display D. Layer

D. Layer

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What is the defect liability period in CPES?
A. 1 year C. 3 years
B. 2 years D. 4 years

A. 1 year

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.In concrete farm-to-market road design, what wall thickness will you use in rectangular grouted riprap ditch?
A. 10 cm C. 20 cm
B. 15 cm D. 25 cm

D. 25 cm

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In concrete farm-to-market road design, what class A concrete thickness will you use in triangular concrete-lined ditch?
A. 10 cm C. 20 cm
B. 15 cm D. 25 cm

B. 15 cm

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It is a more substantial framework progressively buildup as building rises up.
A. Scaffolding C. Staging
B. Form D. None of these

C. Staging

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. It is a small fireproof container placed in a convenient location to enclose the splices which are made with the various wires.
A. Junction box C. Receptacle
B. Panel board D. Feeder board

A. Junction box

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In class AA, A, B and C concrete mixes, how many cubic meters of gravel is required to produce 1 cubic meter of concrete?
A. 1.0 C. 0.6
B. 0.8 D. 0.5

A. 1.0

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As specified under PAES 402:2001, the space requirement for birds 4 weeks old and below is,
A. 5.5 sq. m/100 birds C. 6.5 sq. m/100 birds
B. 6.25 sq. m/100 birds D. 12.5 sq. m/100 birds

B. 6.25 sq. m/100 birds

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.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 C. 20 cm
B. 15 cm D. 25 cm

C. 20 cm

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It is a building designed for fabrication, repair, and maintenance of tools, implements, equipment, and parts of structures
and provides a place where tools, supplies, spare parts are stored.
A. Machinery shed C. Warehouse
B. Workshop D. None of these

B. Workshop

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Describes a beam that bends downwards.
A. Buckling C. Hogging
B. Sagging D. Deflection

B. Sagging

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The recommended overlapping of corrugated GI-sheet roof between sides.
A. ½ to 1 corrugation C. 3½ to 4½ corrugations
B. 1½ to 2½ corrugations D. None of these

B. 1½ to 2½ corrugations

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Removal and disposal of trees, and other unwanted materials below the ground surface. A. Clearing C. Grubbing B. Salvage materials D. Excavation

C. Grubbing

In open channel design, what is the standard concrete wall thickness of lateral trapezoidal open channel? A. 5 cm C. 15 cm B. 10 cm D. 20 cm

C. 15 cm

. Since it is required that lighting controls should be located to be able to light the path ahead and turn off lights without retracing steps, if a big room has two doors then the appropriate switches to use are: A. Four-way switches C. Two-way switches B. Three-way switches D. One-way switches

B. Three-way switches

The 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 C. 400 B. 500 D. 600

B. 500

The rule-of-thumb, what are the number of outlets allowed for a 15-ampere circuit. A. 8 to 10 C. 6 to 10 B. 8 to 12 D. 6 to 8

A. 8 to 10

A partially lined or unlined underground pit into which raw animal or household waste water is discharged. A. Lagoon C. Cesspool B. Cistern D. Septic tank

C. Cesspool

In the environment, by how many times is methane destructive than carbon dioxide? A. 2 times C. 10 times B. 21 times D. 16 times

B. 21 times

Best type of biogas plant for large-scale animal farms having low solid content of effluents. A. Fixed dome C. Tube-bag B. Floating type D. Covered lagoon

D. Covered lagoon

Value of fee to project owners from Clean Development Mechanism (CDM) fund for carbon emission reduction projects. A. Emission value C. Carbon trading value B. Carbon credit value D. Carbon sequestration

B. Carbon credit value

Quantity of oxygen needed to satisfy biochemical oxidation of organic matter in waste sample in 5 days at 20°C. A. TOC C. DO B. COD D. BOD5

D. BOD5

In PAES 414-2:2002, the contaminated liquid that contains dissolved and suspended materials are called _______. A. Sewage C. Leachate B. Effluent D. Wastewater

C. Leachate

Adding or introducing anaerobic bacteria to the digester. A. Seeding C. Loading B. Innoculating D. None of these

A. Seeding

A holding tank chamber where manure and water are collected, stored and separated from heavy and non-biodegradable materials before feeding them into the digester. A. Storage tank C. Separating type B. Collecting tank D. None of these

B. Collecting tank

Mesophilic temperature range. A. 50-60°C C. 10-20°C B. 20-35°C D. None of these

B. 20-35°C

Biological degradation of organic solids under aerobic conditions to a relatively stable humus-like material. A. Digestion C. Composting B. Manure production D. None of these

C. Composting

What states that if two bodies are in thermal equilibrium with a third body, they are also in equilibrium with each other? A. Zeroth law of thermodynamics C. Second law of thermodynamics B. First law of thermodynamics D. Third law of thermodynamics

A. Zeroth law of thermodynamics

The condition where all three phases of a pure substance coexist in equilibrium is called A. Boiling point C. Freezing point B. Critical point D. Triple point

D. Triple point

A process in which the gas is assumed to change its condition (i.e. pressure, volume and temperature of the gas vary) without the transfer of heat to or from the surroundings is called A. Adiabatic process C. Isothermal process B. Diathermal process D. Polytropic process

A. Adiabatic process

Amount of heat added or removed measured in change of temperature without changing state A. Latent Heat C. Heat Transfer B. Sensible Heat D. Specific Heat

B. Sensible Heat

On what plane is the Mollier diagram plotted? A. p-V C. h-s B. p-T D. T-s

C. h-s

A phenomenon similar to what happens inside a car parked outside on a sunny day. A. Global warming C. Climate change B. Weather pattern D. Greenhouse effect

D. Greenhouse effect

A drying technology that has the ability to maintain the original appearance of the product with no shrinkage, retain shape and structure A. Heated air drying C. Freeze drying B. Conduction drying D. All of the above

C. Freeze drying

Which does not belong to the group? A. Granaries C. Grain driers B. Silos D. Vegetable storages

C. Grain driers

For oil seeds, which is the most suited handling method? A. Belt conveyor C. Screw conveyor B. Chain conveyor D. Pneumatic conveyor

C. Screw conveyor

The process of mixing two or more different products together, such as grains and supplements, to obtain desired food ratios, or the process of mixing different quantities of the same product with different size of kernels to obtain the desired quality grade is called A. Blending C. Mixing B. Grading D. Tempering

A. Blending

The angle measured from the horizontal at which product will start to move downwards over a smooth surface with gravity discharging the product is called A. Angle of discharge C. Angle of repose B. Angle of friction D. Hopper angle

B. Angle of friction

It is a method of freezing the surface of poultry meat using mist of liquid prior to storage in an air blast freezer or cold storage room A. Liquid immersion freezing C. Conveyor tunnel freezing B. Liquid spray freezing D. All of these

B. Liquid spray freezing

It is the meat of sheep that is less than one year old. A. Lamb C. Vension B. Lapan D. Chevon

A. Lamb

The commonly used threshing units for throw-in type thresher. A. Peg tooth C. Rasp bar B. Wire loop D. None of these

A. Peg tooth

The recommended rpm of rice thresher cylinder. A. 400-600 rpm C. 2000-3000 rpm B. 800-1200 rpm D. None of these

B. 800-1200 rpm

It is the meat from rabbit. A. Lamb C. Vension B. Lapan D. Chevon

B. Lapan

The major component of a corn mill that reduces corn kernels into grits. A. Burr mill C. Roller mill B. Hammer mill D. All of these

C. Roller mill

A rice thresher that is fed with panicles at one end and discharges threshed product at the other end is called ___. A. Radial type thresher C. Axial-flow thresher B. Hold-on type thresher D. None of these

C. Axial-flow thresher

The amount of moisture in the grain expressed as a percentage of the total weight of the samples. A. Moisture content dry basis C. Moisture content B. Moisture content wet basis D. All of these

B. Moisture content wet basis

It is the method used in preserving meat. A. Smoking process C. Irradiation B. Refrigeration D. All of these

D. All of these

The speed of the fixed rubber roll in a rubber roll huller is slower by ____ compared to that of the adjustable roller. A. 20 % C. 30 % B. 25 % D. None of these

B. 25 %

The optimum relative humidity for storing fruits and vegetables is ___. A. 60-70% C. 90-100% B. 80-90% D. All of these

B. 80-90%

An air-moving device suitable for grain cleaning. A. Axial fan C. Cross flow fan B. Propeller fan D. All of these

C. Cross flow fan

A kind of a cleaner that uses air in separating lesser-density materials from corn kernel/corn grits such as floured corn, germ, and bran. A. Aspirator C. Cleaner B. Oscillating screen D. Cyclone separator

A. Aspirator

The amount of foreign materials in a sample of grains. A. Impurities C. Dockage B. Chalky grain D. None of these

C. Dockage

An indicator of food quality which determines its acceptability to the consumers. A. Taste C. Palatability B. Flavor D. None of these

C. Palatability

The pre-drying temperature requirement for mushroom. A. 80-90oF C. 250-300oF B. 120-125oF D. None of these

A. 80-90oF

This is a type of milk reconstituted with vegetable oil. A. Skimmed Milk C. Pasteurized Milk B. Filled Milk D. Evaporated Milk

B. Filled Milk

The drying time requirement for solid yellow or slightly brown-flecked bananas in a dehydrator. A. 4 - 8 hours C. 10 - 16 hours B. 8 - 10 hours D. None of these

B. 8 - 10 hours

Most important step in milk processing considering HACCP. A. Filtration C. Sterilization B. Pasteurization D. Standardization

B. Pasteurization

.Suppose you are working in a food processing plant. A contamination had spread in the plant, what must be the first thing you should do? A. Stop the processing C. Conduct clearing in the plant B. Find the source of contamination D. Monitor the critical control points

B. Find the source of contamination

This process applied in food kills bacteria by breaking down bacterial DNA, inhibiting bacterial division. A. Alpha radiation C. Beta radiation B. Gamma radiation D. Infrared

B. Gamma radiation

It is simply known as written sanitation standards (process or step implemented to prevent adulteration and contamination of products. A. HACCP C. GMP B. SSOP D. HAZOP

B. SSOP

A systematic approach to the identification, evaluation, and control of food safety hazards. A. HACCP C. GMP B. CPES D. ISO

A. HACCP

A system for ensuring that products are consistently produced and controlled according to quality standards. A. HACCP C. GMP B. CPES D. ISO

C. GMP

For an 8-A current to produce 10-C charge, how much time is needed? A. 0.80 sec C. 1.25 sec B. 0.16 sec D. 80 sec

C. 1.25 sec

Seventy-five hundred pounds of fresh beef enter a chilling cooler at 102oF and are chilled to 45oF each day. The specific heat of beef before freezing is 0.75 Btu/lboF, and after freezing is 0.40 Btu/lboF. Compute the product load in BTU per 24-hr. A. 320,625 C. 491,625 B. 171,000 D. 149,625

A. 320,625

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

A. 18%

If 200 kg of shelled corn at 32% moisture content are dried to 19% moisture content, how much moisture is taken out? A. 167.9 kg C. 26.0 kg B. 32.1 kg D. 17.4 kg

B. 32.1 kg

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. 4% C. 6% B. 5% D. 7%

B. 5%

What is the rate of rice husk consumption of a 2-ton grain dryer requires to dry paddy from 22 to 14% in 8 hrs. The dryer overall thermal efficiency is 45%. Assume a heat of vaporization for paddy of 600 kcal/kg of moisture evaporated and heating value for rice husk of 3000 kcal/kg. A. 8.34kg/hr C. 12.34kg/hr B. 10.34kg/hr D. 14 kg/hr

B. 10.34kg/hr

.A 40 watt fluorescent lamp produces 3,000 lumens of light in a room with a dimension of 3 meters by 5 meters. What is the illumination of the floor? A. 200 lux C. 200 foot-candles B. 40 foot-candles D. 50 lux

A. 200 lux

How many 75 watt-peak solar modules are needed for a solar powered incubator having a power rating of 144 watts, system voltage of 48 volts and amperage of 6 amperes? All solar modules used have 12 volts nominal voltage and 4.6 amperes peak amperage. A. 4 Modules C. 10 Modules B. 8 Modules D. 12 Modules

B. 8 Modules

How many kilograms of rice hulls are needed to dry 1 ton of palay from 24% to 14% w.b.? Assume latent heat of vaporization is 2,500 kJ/kg, heating value of rice hull is 14 MJ/kg and efficiency of 100%. A. 3.32 kg C. 29.1 kg B. 20.8 kg D. 116.3 kg

B. 20.8 kg

A sample of corn weighing 105 g is heated in an oven kept at 130°C for 30 hours. The sample when removed from the oven weighs 88.5 g. Assuming that all the moisture has been removed from the grain, what is the moisture content of the grain expressed on a wet basis? A. 15.7% C. 19.2% B. 18.6% D. 30 %

A. 15.7%

The factor kn for a certain kW-hr motor is 2.0, and the disk makes 40 revolutions in 10 min. How many kilowatt-hours will be used if the appliances attached to the motor were on for 8 hours? A. 8.43 C. 3.84 B. 7.83 D.4.87

C. 3.84

A centralized solar power plant with DC to AC inverter is used to electrify a farmstead using 75 watt-peak solar modules of the same brand. How many kilowatts-hours of energy in an average day of 5 hours sensible sunlight can be generated by 100 units of solar modules if inversion efficiency is 85%, module matching efficiency is 95% and transmission efficiency from modules to centralized battery bank is 95%? A. 28 C. 30 B. 29 D. 31

B. 29

What is the daily biogas consumption in cubic meters of an industrial boiler using 12 units of 50-cm gas burner 8 hours a day? The consumption of each gas burner is 1.3 m3 /hr. A. 9.6 C. 102 B. 80 D. 125

D. 125

In the Clean Development Mechanism (CDM), how much will the project owner of a new covered lagoon biodigester receive annually from CDM fund for the first 10 years if his biodigester produces 8,000 tonnes of methane and 3,000 tonnes of carbon dioxide per year. Assume that the current carbon credit costs $8 per tonne of carbon equivalent. A. $30,000 C. $1,368,000 B. $100,000 D. $2,200,000

C. $1,368,000

Estimate the biogas production in cubic meters per day from a large balloon type digester using 1:1 water-manure ratio. The source farm has 1,100 heads of porkers of mixed ages. Use a retention period of 30 days. The mean daily manure production of porkers is 2.2 kg/head while the specific gas production for 30-day manure retention period is 0.063 m3 /kg. A. 97 C. 153 B. 125 D. 193

C. 153

How many heads of breeding cattle are needed as source of manure to generate 80 m3 of biogas a day if the retention period is 25 days and water-manure ratio is 1:1. The mean daily manure production of breeding cattle is 13 kg/head while its specific gas production for 25-day manure retention period is half of that of chicken dung. A. 139 C. 205 B. 192 D. 206

D. 206

When approved as Clean Development Mechanism (CDM) project, how much will the project owner of a new covered lagoon biodigester receive annually from CDM fund for the first 10 years if the digester produces 7,000 tonnes of methane plus 3,000 tonnes of carbon dioxide annually. Assume current carbon credit costs $12 per tonne of carbon equivalent. A. $1,800,000 C. $1,200,000 B. $120,000 D. $204,000

A. $1,800,000

The initial volume of a certain gas is 528 cm3 at 45 kPa pressure. During an isothermal process, the volume of gas increased to 888 cm3 . What is the pressure of the gas after the process? A. 55.26 kPa C. 36.22 kPa B. 48.73 kPa D. 26.76 kPa

D. 26.76 kPa

An automobile tire is inflated to 32 psig pressure at 50°F. After being driven, the temperature rises to 75°F. Assuming that the volume remains constant, the final gage pressure is A. 34.3 psig C. 39.4 psig B. 37.4 psig D. 46.7 psig

A. 34.3 psig

A 10m long by 3m high composite flat wall is made up of 200 mm of common brick (kcb = 0.77 W/m.K), an air space (Ca= 6.9 W/m2 .K), 150mm concrete (kco = 1.73 W/m.K), and 75mm face brick (kfb =1.32 W/m.K). The outside and inside film coefficient are 35 W/m2 .K and 8.5 W/m2 .K, respectively. The outside air is at 40°C and the room air temperature is 25°C. Calculate the interface temperature between concrete and face brick. A. 26.7℃ C. 28.7℃ B. 27.7℃ D. 29.7 ℃

C. 28.7℃

.A Carnot machine operates between a hot reservoir at 200℃ and a cold reservoir at 20℃. When operated as an engine, it receives 1000 kJ/Kg. Find the coefficient of performance when operated as refrigerator. A. 1.63 C. 3.43 B. 2.53 D. 4.33

A. 1.63

A seed processing warehouse requires a refrigerating capacity of 150,000 BTU/hr to maintain the required 20oC storage temperature. How many tons of refrigeration is required for the warehouse? A. 12.5 TR C. 14.5 TR B. 13.5 TR D. 15.5 TR

A. 12.5 TR

A vapor compression refrigeration system is to have a refrigerant mass flow rate of 0.4kg/s. The evaporating temperature is -10°C, and condensing temperature is 40°C. What is the refrigerating capacity of the refrigeration system? The enthalpy at the beginning of compression = 401.6kJ/kg, at the end of compression = 440kJ/kg, and at the end of condensation = 252.4kJ/kg. A. 15 kW C. 75 kW B. 60 kW D. 80 kW

B. 60 kW

Shrimp harvested in a pond situated in Bohol are packed in insulated sheet metal containers and mixed with crushed ice while in transit to the shrimp processing plant in Manila. Initial temperature of the product is about 25°C and it is desired to cool the shrimp at approximately 0°C during shipment. Estimate the product load, in kJ/kg. For shrimp highest freezing temperature is –2.2°C, cp above freezing is 3.38 kJ/kg∙K, cp below freezing is 1.79 kJ/kg∙K, and latent heat of fusion is 254 kJ/kg.? A. 44.8 C. 88.4 B. 84.5 D. 91.9

B. 84.5

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AREA 3 Flashcards

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