VOLUME 9: AREA 3 (AB STRUCTURES & ENVIRONMENT ENGINEERING & BIOPROCESS ENGINEERING & ALLIED SUBJECTS)

RED (WRONG ANSWER)  / GREEN (CORRECT ANSWER) 

Question 1: Which of the following methods is not applicable to increase the total solids content of liquid manure?

A) Drying

B) Dilution

C) Solid-liquid separation

D) Add bedding

Question 2: When planning the layout buildings in a farm, which zone should implement shed and other storage structures with dry and quiet activities be placed?

A) Zone 2

B) Zone 1

C) Zone 3

D) Zone 4

Question 3: What solids fraction is determined if an oven dried sample is placed in a furnace for 1 hour at 550°C?

A) Suspended solids

B) Total solids

C) Volatile Solids

D) Dry matter

Question 4: According to PAES 419:2000, this is the optimum stack height in layers when storing sacks of maize.

A) 18

B) 17

C) 16

D) 15

Question 5: A natural or artificial process of nutrient enrichment whereby a water body becomes abundant in plant nutrients and low in oxygen content.

A) Acidification

B) Eutrophication

C) Nitriifcation

D) Erosion

Question 6: Based on PAES 401:2001, compute the number of farrowing pens for a 26-sow swine farm. Set a litter index of 0.89, litter size of 9, and occupancy period of 45 days.

A) 4

B) 3

C) 1

D) 9

Question 7: Based on PAES 401:2001, what is the minimum ventilation rate for a farrowing unit under normal conditions?

A) 0.08 m^3/min

B) 0.28 m^3/min

C) 0.12 m^3/min

D) 0.24 m^3/min

Question 8:Based on PAES 401:2001, compute the number of nursery pens for a 26-sow swine farm. Set a litter index of 0.89, litter size of 9, number of pigs per pen is 3, and occupancy period of 38 days.

A) 4

B) 8

C) 3

D) 9

Question 9: Based on PAES 402:2001, determine the floor space requirement for a 10,000-head broiler house from 0 to 4 weeks old.

A) 625 m^2

B) 1,250 m^2

C) 1,600 m^2

D) 1,0000 m^2

Question 10: Based on PAES 403:2001, determine the minimum floor space requirement for a 200-head layer poultry house with a cage type system.

A) 5 m^2

B) 100 m^2

C) 10 m^2

D) 200 m^2

Question 11: Based on PAES 403:2001, determine the minimum floor space requirement for a 250-head layer poultry house with slotted flooring. The layers are at least 22 weeks old

A) 9 m^2

B) 23 m^2

C) 125 m^2

D) 250 m^2

Question 12: It refers to the stress in a material tending to cause deformation by slippage along a plane or planes parallel to the imposed force.

A) Strain

B) Bearing Stress

C) Normal Stress

D) Shear Stress

Question 13: It refers to the stress in a material tending to cause deformation along a plane or planes perpendicular to the imposed force.

A) Strain

B) Bearing Stress

C) Normal Stress

D) Shear Stress

Question 14: It is a rigid structure that consists of a collection of two-force structural elements connected at pin joints or nodes.

A) Shell

B) Frame

C) Truss

D) Bearing Stress

Question 15: This refers to a mixture of cement, water and sand that is used to fill spaced between tiles.

A) Concrete

B) Paste

C) Mortar

D) Grout

Question 16: Concrete is a rigid aggregate of materials consisting of the following:

A) Hollow blocks, cement, sand, water

B) Gravel, cement, sand

C) Gravel, cement, sand, water

D) Hollow blocks, gravel, sand, water

Question 17: This refers to a swine ranging from 40 to 65 kg in terms of weight.

A) Grower

B) Fattener

C) Weanling

D) Finisher

Question 18: It is a female swine that has not farrowed.

A) Boar

B) dry sow

C) Sow

D) Gilt

Question 19: It is a type of poultry raised primarily for meat production

A) Broiler

B) Layer

C) Game fowl

D) Breeder

Question 20: It is the process of providing supplemental heat to broiler chicks from hatching up to the time they have grown sufficient feathers to control their own body temperature.

A) Hatching

B) Candling

C) Brooding

D) Weanling

Question 21: It refers to female cattle between two to three years of age which has not given birth.

A) Calf

B) Yearling

C) Heifer

D) cow

Question 22: The total energy does not include ___.

A) conductive energy

B) chemical energy

C) electro-magnetic energy

D) nuclear energy

Question 23: Given the thermodynamic identity dU = TdS - PdV, an adiabatic process assumes a constant __.

A) V

B) U

C) T

D) S

Question 24: Which of the following materials has the highest absorptivity at room temperature?

A) Concrete

B) Aluminum

C) Asbestos

D) Wood

Question 25: For an isotropic medium, the Fourier’s law is __.

A) q = ∇(kT)

B) q= -k ∇T

C) q = k ∇T

D) q = -k dT/dx

Question 26: The Moody chart for pipe shows the friction factor as a function of the Reynolds number at various roughness. Which of the commercial ducts has the highest roughness values?

A) Concrete

B) Rubber

C) Steel

D) Wood

Question 27: The boundary layer theory is applicable to systems with __.

A) very large Nusselt number

B) very large Reynolds number

C) very small Nusselt number

D) very small Reynolds number

Question 28: Light is simply the visible portion of the electromagnetic spectrum that lies __.

A) between 0.3 and 3.0 μm

B) between 0.4 and 0.76 μm

C) between 0.76 and 100 μm

D) between 0.01 and 0.4 μm

Question 29: In a geometry that consists of two concentric spheres, the view factor Fsub(1-2) = 1 since the entire radiation leaving the surface of the smaller sphere (R1) is intercepted by the larger sphere (R2). What is the value of Fsub(2-1)?

A) Less than 1

B) 1

C) More than 1

D) Cannot be determined

Question 30: The highest pressure drop in the refrigeration cycle occurs at the __.

A) compressor

B) condenser

C) expansion device

D) evaporator

Question 31: In a throttling device, the enthalpy in the direction of flow __.

A) decreases

B) remains constant

C) can either increase or decrease

D) increases

Question 32: Infiltration most commonly occur because of air density differences between rooms. Heat gain through doorways from air exchange is influenced by the following factors:

A) doorway area, enthalpy of refrigerated air, density factor

B) doorway height, doorway width, sensible heat ratio of infiltration air

C) sensible and latent refrigeration load

D) open-time factor, flow factor, effectiveness of doorway protective device

Question 33: Typically, the height of refrigerated spaces varies between 8.5 and 10.5 m or more clear space between the floor and structural steel to allow forklift operation. The practical height for stalking pallets without rack is 4.5 to 5.5 m. How much allowance is given to aisles and space above the pallet stacks?

A) 20%

B) 50%

C) 40%

D) 10%

Question 34: An air stream at a specified temperature and relative humidity undergoes evaporative cooling by spraying water into it at about the same temperature. The lowest temperature the air stream can be cooled to is ___.

A) the dew point temperature at the given state

B) the dry bulb temperature at the given state

C) the wet bulb temperature at the given state

D) the saturation temperature corresponding to the humidity ratio at the given state

Question 35: Psychrometry is the study of moist air and its properties. For drying, which processes occur?

A) Dehumidification and cooling

B) Dehumidification and heating

C) Humidification and heating

D) Humidification and cooling

Question 36: Microorganisms are capable of growth over a wide range of temperatures. Temperature is used to categorized microorganisms. Those capable of growth at 5°C, some are able to grow at temperature as slow as -5°C and are the primary cause of spoilage of perishable foods are called __.

A) thermopiles

B) mesophiles

C) psychrotrophs

D) xerotrophs

Question 37: Fresh fruits and vegetables respire and release heat during storage. This heat produced by respiration varies with the product and its temperature. As the product temperature decreases, ___.

A) heat of respiration decreases exponentially

B) heat of respiration increases exponentially

C) heat of respiration increases linearly

D) heat of respiration decreases linearly

Question 38: All life-forms require water for growth. Water activity refers to the availability of water within a food system and is defined at a given temperature as ___.

A) vapor pressure of air over the vapor pressure of solute

B) vapor pressure of air over the vapor pressure of solution

C) vapor pressure of solution over vapor pressure of solute

D) vapor pressure of solute over the vapor pressure of solution

Question 39: According to PAES 201: 2000: Agricultural Machinery-heated air mechanical grain dryer, an indirect-fired dryer is in which the products of combustion do not come in contact with the products being dried. What is the minimum required heating system efficiency for furnace with biomass fuel?

A) 50%

B) 65%

C) 75%

D) 90%

Question 40: Adiabatic drying assumes constant ___.

A) Humidity ratio

B) Relative humidity

C) Enthalpy

D) Wet bulb temperature

Question 41: The equilibrium moisture content at zero relative humidity is __

A) 100

B) 14

C) 0

D) 18

Question 42: In a flat bed dryer, as the airflow rate (m^3/s-m^2) is increased exponentially, the pressure drop per meter depth

A) can either increase or decrease

B) decreases

C) Increases

D) remains constant

Question 43: The minimum set of requirements for producing safe and wholesome food, which is an important part of regulatory control over the safety of the country’s food supply is called ___.

A) effective management practices

B) standard operating procedure

C) good manufacturing practices

D) total quality management procedures

Question 44: Many of the procedures for the control of microorganisms are managed by HACCP system of food safety. Developed in the food industry since the 1960s, HACCP is now accepted by food manufacturers and regulators. It is a preventive system that builds safety control features in the food products design and the process by which it is produced. HACCP stands for ___.

A) Hazard Analysis and Chemical Corrective Point

B) Hazard Analysis and Critical Control Point

C) Health Analysis and Critical Control Point

D) Health Awareness and Critical Criteria Program

Question 45: Refers to the application of engineering science and designs to the processes and systems involved in the sustainable production, post production and processing of safe food, feed, fiber, timber and other agricultural and biological materials and the efficient utilization, conservation, and management of natural and renewable resources in order to enhance human health in harmony with the environment

A) Civil Engineering

B) Agriculture

C) Agricultural and Biosystems Engineering

D) Agricultural Chemistry

Question 46: The protection of inventions by RPABE registered as patents and utility models.

A) Trademarks

B) Copyright

C) Intellectual Property

D) Industrial Property

Question 47: The agency mandated to develop standards for agriculture and fishery machinery, tools and equipment.

A) PhilMech

B) AMTEC

C) BAFS

D) BAFE

Question 48: Items indicated in the documents signed, used or issued by PABE in connection with the practice of profession except:

A) professional tax receipt

B) duration of validity

C) registration date of license

D) professional license number

Question 49: The equilibrium moisture content at zero relative humidity is __

A) 100

B) 14

C) 0

D) 18

Question 50: Part of the BAC that purpose is to enhance transparency of the government procurement process.

A) TWG

B) BAC Secretariat

C) observers

D) End user

Question 51: Republic Act No. 9367 is also known as:

A) CARP Law

B) Renewable Energy Act

C) Biofuels Act

D) CARPER

Question 52: The code that deals with minimum standards and requirements for all buildings and structures:

A) RA 9367

B) RA 9003

C) RA 6541

D) RA 6657

Question 53: The agency mandated in the testing and evaluation of agricultural and fisheries machinery and equipment to be sold in the market.

A) PhilMech

B) BAFS

C) AMTEC

D) BAFE

Question 54: The following are the qualifications to become a member of the Board of ABE except:

A) natural-born citizen

B) registered PABE

C) active practitioner for not less than 7years

D) at least 35 years old

Question 55: What should be the color of the neutral wire in a building electrical system?

A) red

B) black

C) white

D) green

Question 56: A type of fault that occurs when there is an erratic flow of current in the conductors

A) Earth fault

B) Ground fault

C) Arc fault

D) Sinusoidal fault

Question 57: It is a device that opens a circuit whenever it detects a ground fault.

A) AFCI

B) circuit breaker

C) GCFI

D) Fuse

Question 58: How much is the maximum allowable resistance of a grounding electrode?

A) 24 ohms

B) 30 ohms

C) 25 ohms

D) 34 ohm

Question 59: Electric motors can _____ the power factor in a system.

A) Maintain

B) increase

C) Improve

D) decrease

Question 60:When does the power factor become greater than 1?

A) It will never happen

B) When the apparent power is greater than the reactive power

C) When the apparent power is greater than the true power

D) When the apparent power is equal to the true power

Question 61: Majority of electric power in the Philippines is produced using this.

A) When the apparent power is equal to the true power

B) Friction

C) Magnetism

D) Heat

Question 62:Majority of the energy consumed by incandescent light bulbs is converted into __.

A) x-rays

B) cosmic rays

C) heat and infrared radiation

D) Light

Question 63: Which room is required to have a GFCI outlet?

A) Living room

B) bedroom

C) Dining room

D) Bathroom

Question 64: Which is an assumption that should be considered when solving problems using the OHM’s LAW?

A) Conductors have negligible resistance

B) Conductors have infinite length

C) Conductors have finite length

D) Conductors have considerable resistances

Question 65: Which statement is most likely true?

A) Joule heating will occur when there is no current in a circuit

B) Joule heating will occur in systems with high voltages

C) Joule heating will occur in circuits with resistors

D) Joule heating will occur in circuits with no resistance

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