2017 Forest Utilization Engineering Flashcards by Clyde Louise Arbilo

This species is widely grown in Mindanao and highly suitable for paper manufacture because its fiber averages 1.15 mm long with thin walls, giving it flexibility and good fiber to fiber bonding in paper.
a. Gmelina arborea
b. Endospermum peltatum
c. Albizia saman
d. Albizia falcataria

d. Albizia falcataria

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An instrument used to measure wood decay:
a. Psychrometer
b. Penetrometers
c. Lysimeter
d. Clinometer

b. Penetrometers

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Delignification means:
a. Removal of tree bark
b. Removal of extractives
c. Removal of a wood cell substance by freezing
d. Removal of a wood cell substance using chemicals

d. Removal of a wood cell substance using chemicals

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The property of the wood which enables it to resist external forces is:
a. Physical property
b. Anatomical property
c. Chemical property
d. Mechanical property

d. Mechanical property

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A pulping process which subject the chip wood laterally against a revolving grindstone that reduces the chips to a fibrous mass which after screening and thickening is converted into pulp products.
a. Alkaline process
b. Mechanical process
c. Soda process
d. Sulfate process

b. Mechanical process

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The heartwood of this species is most easily penetrated with preservatives.
a. Apitong
b. Yakal
c. Mancono
d. All

a. Apitong

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A crude method of measuring horizantal distance.
a. Transit
b. Laser
c. Pacing
d. All

c. Pacing

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An example of non-pressure treatment process:
a. Steeping
b. Bethel
c. Lowry
d. Reuping

a. Steeping

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A type of panel made from finely ground wood pulp, held together with a bonding agent and lightly compressed and their density is far less than that of hardboard or particle board.
a. Medium board
b. Black board
c. Perforated board
d. Soft board

d. Soft board

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Find the MC of a piece of wood with an initial weight of 120 grams and an ovendry weight of 100 grams.
a. 1.20%
b. 83.33%
c. 16.67%
d. 20.00%

d. 20.00%

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Knot which appears when a sawn face cuts length-wise through a branch base:
a. Spike knot
b. Round knot
c. Knot
d. Loose knot

a. Spike knot

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These are small patches of bark that are embedded in wood:
a. Embedded knot
b. Brashness
c. Bark pockets
d. None

c. Bark pockets

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If 5.25cm on the map represents 5.25km on the ground, what is the scale?
a. 1:1,000,000
b. 1:1,000
c. 1:10,000
d. 1:100,000

d. 1:100,000

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Compute the equivalent of 350 kilometers to miles.
a. 217.53 miles
b. 563.15 miles
c. 820.00 miles
d. 165.24 miles

a. 217.53 miles

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Extractives lend color to the sapwood making it distinctive for wood identification. Also because of extractives, sapwood is darker than heartwood.
a. Only the first statement is true
b. Only the second statement is true
c. Both statements are true
d. Both statements are false

Both statements are false

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Cork is one minor forest products that is obtained from the outer bark of trees under the genera.
a. Dipterocarpus
b. Abstonia
c. Quercus
d. Casia

c. Quercus

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Solid product obtained from destructive distillation of wood:
a. Charcoal
b. Gasified wood
c. Fluidized wood
d. Ash

a. Charcoal

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A pole, tower or tree used in cable logging to raise the mainline off the ground.
a. Raft
b. Guy lines
c. Boom
d. Spar

d. Spar

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Which does not belong to the group?
a. Quarter sawing
b. Radial sawing
c. Flitch sawing
d. Flat sawing

d. Flat sawing

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Two complementary bordered pits in the adjacent cells:
a. Mini-pit pair
b. Bordered pit pair
c. a & b
d. None

b. Bordered pit pair

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Which of the following scales is an example of representative fraction?
a. 1cm : 3m
b. 1:10,000
c. 500:1
d. 1 in : 20ft

b. 1:10,000

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Which of the following is not a secondary sawmilling operation?
a. Preservation
b. Seasoning
c. Grading
d. Resawing

d. Resawing

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A diameter tape is being constructed. How far from the zero-end should the point 60 cm DBH be marked?
a. 188.50 cm
b. 219.92 cm
c. 182.21 cm
d. 157.08 cm

a. 188.50 cm

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A structure member supporting a load applied transversely to it?
a. Post
b. Stad
c. Purlin
d. Beam

d. Beam

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Pore multiple to two or more pores that are crowded together and flattened along the lines of contact so as to appear as subdivision of single pore. If the subdivision is perpendicular to the wood rays the wood multiple is radial. a. Only the first statement is true b. Only the second statement is true c. Both statements are true d. Both statements are false

c. Both statements are true

A way of distinguishing closely related species (in structure) which involves the burning in still air of a match-size stick from the heartwood and observing the residue: a. Match test b. Destructive distillation c. Splinter test d. Charcoal test

c. Splinter test

The greatest amount of shrinkage or swelling occurs in what direction? a. Radial b. Longitudinal c. Tangential d. Transverse

c. Tangential

The cells which function is to store food in woody plants. a. Fibers b. Parenchyma c. Vessels d. Epithelial cells

b. Parenchyma

Thin sheet of wood uniform-thickness produced by peeling, slicing, or sawing. a. Plywood b. Veneer c. Paper d. Shaving

b. Veneer

In wood, it refers to the average number of rays for a given unit of length (usually one millimeter). a. Spacing b. Abundance c. Number d. None of the above

a. Spacing

What is the slope in degrees if the vertical distance (rise) is 15 meters and the horizontal distance (run) is 55 meters. a. 88.36 degrees b. 47.60 degrees c. 87.90 degrees d. 15.26 degrees

d. 15.26 degrees

The volume of log input needed to sustain the operation of a wood processing plant at attainable capacity for a period of one (1) year. a. Annual log requirement b. Allowable cut c. Annual growth d. Log production

a. Annual log requirement

The classification of land according to what activities take place on it or how humans occupy it. a. Land use b. Land cover c. Land classification d. Land utilization

a. Land use

Which wood smells like a faint cedary odor? a. Narra b. Mayapis c. Almon d. Tindalo

a. Narra

Which of the following is an example of a latitude data? a. 121 23 30.67 E b. 16 34 42.56 N c. 134 35 40.45 S d. 6 42 59.12 W

b. 16 34 42.56 N

An index of the amount of wood substance a piece of contains: a. Specific gravity b. Strenght index c. Mass index d. None

a. Specific gravity

In wood, water in the wood cell lumina is called free water while water in the cell wall materials is called: a. Moisture content b. Locked water c. Humidity d. Bound water

d. Bound water

What is the difference in elevation between two points on the ground if the abney level reading is 10 and the horizontal distance is 35m? a. 6.17 m b. 34.47 m c. 6.08 m d. 7.00 m

a. 6.17 m

A practical yet effective method of aligning points of a survey line. a. 3-pole method b. Estimation of eye and finger c. 3-person approach d. Pacing

a. 3-pole method

In saw milling, a set is provided to avoid friction during cutting. a. Oiling b. Clearance c. Inspection d. Benching

b. Clearance

Softwoods contain more types of cells than hardwoods. About 90% of cells in softwood are longitudinal tracheids. a. Only the first statement is true. b. Only the second statement is true. c. Both statements are true. d. Both statements are false.

b. Only the second statement is true

What is the slope of the land if the difference in elevation is 2.5 meters and the horizontal distance is 35 meters? a. 14% b. 71.43% c. 7.14% d. 32.45%

c. 7.14%

All are interior defects except: a. Brash center b. Center rot c. Heart check d. Unsound knot

d. Unsound knot

Which of the following are form of defects? a. Knot and catface b. Check and split c. Sweep and crook d. Center rot and butt rot

c. Sweep and crook

A biltmore stick is being constructed for use by a person with an arm length of 54 cm. Calculate the distance from the zero-end to the point where 60cm DBH should be marked. a. 41.29 cm b. 41.49 cm c. 41.69 cm d. 43.79 cm

a. 41.29 cm

Strips of boards used to separate the layer of lumber in a pile to improve air circulation. a. Battens b. Stickers c. Planks d. Sleepers

b. Stickers

A lumber package of kiln dried apitiong measure 4 x 8 x 12. The rough estimates of the board foot contents of the unstickered lumber is package is; a. 6,144 bd. ft. b. 4,608 bd. ft. c. 384 bd. ft. d. 32 bd. ft.

b. 4,608 bd. ft.

A piece of wood measures 10 cm thick, 40 cm wide, and 60 cm long. After ovendrying, the wood becomes 9.9 cm thick, 39.8 cmm side and the length remains the same. What is the volumetric shrinkage? a. 1.50% b. 1.52% c. 1.64% d. 1.25%

0.015

Refers to the direction of the alignment of wood elements when considered en masse. a. Grain b. Texture c. Hardness d. Weight

a. Grain

Which of the following is not a physical property of wood? a. Moisture content b. Density c. Elastic Properties d. Decay resistance

c. Elastic properties

High quality veneer that is used for the exposed surfaces of plywood. a. Core veneer b. Back veneer c. Narra fly d. Face veneer

d. Face veneer

Treatment which reduce combustibility of wood. a. Polyethylene glycol b. Visual grading c. Insecticides d. Fire-retardant

d. Fire-retardant

As Foresters what do you think is the main purpose of discovering the economic use of the lesser used species in the forest? a. Sustainable development through maximization of benefit derive from forest resources b. Biodiversity conservation c. Industrialization of the country d. Educational purpose

a. Sustainable development through maximization of benefit derive from forest resources

The first operation in sawmilling, which involves breakdown of log into planes, boards, or dimensions. a. Resawing b. Headsawing c. Edging d. Trimming

b. Headsawing

A resin which, because of a high content of volatile oil, is softer than one which contain little or no oil: a. Latex b. Gum c. Balsam d. Oleoresin

b. Gum

Hardwoods are not treated well by this non-pressure method: a. Dipping b. Steeping c. Cold soaking d. Brushing

c. Cold soaking

If the photo scale is 1;12,000, what is the actual length of the stream if measures 0.17 cm on the photograph. a. 20.40 m b. 204 m c. 2.04 m d. 2,040 m

a. 20.40 m

Convert 170 azimuth (reckon from north) to bearing. a. S80E b. S10E c. S15W d. S75E

b. S10E

Substances which have some adhesive properties and are added to the synthetic resin to reduce cost of glue-mix: a. Extenders b. Glue c. Filler d. Extractives

a. Extenders

Distinguished from the other members of the Philippine Mahogany and other related wood by its empty resin canals: a. Almon b. Mayapis c. Red lauan d. White lauan

b. Mayapis

Plywood is an offshoot of the ancient art of veneering which dates back more than three thousand years as proven by: a. Veneered furniture was already introduced during the Medieval age. b. Japan Emperor used veneer plywood in the 16th century. c. Plywood has already been used by the Roman Empire d. Veneered furniture has been found in the tombs of the pharaohs.

d. Veneered furniture has been found in the tombs of the pharaohs.

Bearing reckons from the north or south meridian. It ranges from 0 to 90. a. Only the first statement is true b. Only the second statement is true c. Both statements are true d. Both statements are false

c. Both statements are true

An ovendried wood, which has a volume of 240 cc absorbed water and swelled into 245 cc. What is the volumetric swelling? a. 2.05% b. 2.08% c. 5.00% d. 50.00%

b. 2.08%

If the cross-sectional area of the stream channel where measurement of the streamflow was made is 6 sq. meter and velocity of the water current is 3 meter per second. The streamflow discharge is: a. 30 cu.m./min b. 1,000 cu.m./min c. 18 cu.m./min d. 1,080 cu.m./min

d. 1,080 cu.m./min

A rectangular hole cut into a piece of wood to accept a tenon. a. Groove b. Knot c. Outlet d. Mortise

d. Mortise

The soft core in the center of a tree trunk. a. Peat b. Pit c. Pith d. Tylosis

c. Pith

Given 2 logs with measurements: L=6 m, Ds=36 cm, Db=42 cm; and L=9 m, Ds=44 cm, Db=58 cm. Find the combined volume in cubic meters using the government scaling method. a. 2.45 b. 2.56 c. 1.94 d. 2.95

a. 2.45

Tissues produced by the apical meristem: a. Primary b. Secondary c. Tertiary d. None of the above

a. Primary

All of these products can be produced from nipa except: a. Shingles b. Lambanog c. Broom d. Resin

d. Resin

If the cross-sectional area of the stream channel were measurement of the streamflow was made is 6 sq. meter and velocity of the water current is 3 meter per second. The streamflow discharge is: a. 30 cu.m./min. b. 1,000 cu.m./min. c. 18 cu.m./min. d. 1,080 cu.m./min.

d. 1,080 cu.m./min.

The largest genus of rattan in the Philippines a. Korthalsia b. Dillenea c. Plectomia d. Calamus

d. Calamus

A recess in secondary wall which provides inter-cell communication for the translocation of liquid. a. Pit b. Vessel c. Fiber d. Tracheid

a. Pit

One consideration in the choice of wood furniture making. a. High density b. Light in weight c. Kiln dried d. High specific gravity

d. High specific gravity

Lumber (primarily hardwoods) in which the annual rings make angles of 30 to 60 with the surface of the piece. a. Flat sawn b. Bastard sawn c. Quarter sawn d. Plain sawn

b. Bastard sawn

A separation of the wood along an annual ring or cracks radiating from the heart caused by frost, wind, or felling of the tree. a. Warp b. Split c. Shake d. Check

c. Shake

A hardboard used chiefly as exterior siding. a. Patterned hard board b. Perforated board c. Striated board d. Grooved hard board

d. Grooved hard board

Most favored species for furniture and cabinet work: a. Gubas b. Falcata c. Ipil-ipil d. Narra

d. Narra

To make the surface of paper smooth by pressing it between steel rollers during manufacture. a. Rolling b. Calendar c. Calender d. Sanding

c. Calender

A pole, tower or tree used in cable logging to raise the mainline off the ground. a. Raft b. Guy lines c. Boom d. Spar

d. Spar

Forester Lingon wants to find out the distance between points A and B. If his double pace factor is 1.16 and it took him an average of 110 double paces to cover the distance, how far is point A from point B? a. 63.8 m b. 94.83 m c. 127.6 m d. 132.45 m

c. 127.6 m

The radial separation of the wood fibers starting from the pin outwards: a. Heart check b. Loose heart c. Ring shake d. Center rot

a. Heart check

An instrument for determining vertical angle in the field: a. Protractor b. Haga altimeter c. Compass d. Abney level

d. Abney level

A circular plot with a radius of 18 meters has an area of: a. 18 ha b. 1.0 ha c. 1.8 ha d. 0.1 ha

d. 0.1 ha

The wood with thicker cell walls and smaller cavities have: a. A greater amount of wood cell cavities b. Small/Lesser amount of wood substance c. Wood substance and cell cavities are equal d. Greater amount of wood substances

d. Greater amount of wood substances

Which of the following species is characterized by a ring-porous topography? a. Binuang b. Almon c. Bagtikan d. Kalantas

d. Kalantas

It is a fixed relation that every distance on the map will correspond to the distance on the ground. a. Base map b. Contour map c. Map scale d. Geographic map

c. Map scale

The distance between two points (A to B) over a sloping ground was measured and the slope distance was found out to be 60 meters and the vertical angle was found out to be 8. Determine the horizontal distance. a. 23.48 m b. 8.43 m c. 8.35 m d. 59.42 m

d. 59.42 m

A distilled chemical produced from tapping a living pine and harvesting the sap. a. Latex b. Resin c. Turpentine d. Sap

c. Turpentine

Defect characteristics by division of the main stem or bole of a tree into two or more stems. a. Fluted b. Fork c. Knot d. Check

b. Fork

This error occurs when the end stations of the closed traverse survey do not meet when plotted on paper owing to errors in field measurements. a. Resultant error b. Discrepancy c. Linear error of closure d. Systematic error

c. Line error of closure

In bandmilling, the recommended gauge of the sawblade is dictated by. a. Diameter of the flywheel b. Feed speed c. Length of the sawblade d. Horse power of the motor

a. Diameter of the flywheel

Narrow brown or black lines in decayed or decaying wood. a. Zone line b. Pitch c. Figure d. Hypae

a. Zone line

The wood density of kamagong is greater than that of binuang. Therefore, lesser shrinkage is expected for kamagong than binuang. a. Only the first statement is true b. Only the second statement is true c. Both statements are true d. Both statements are false

a. Only the first statement is true

Which of the following agents of wood deterioration is responsible in the bio-deterioration lumber/timber? a. Martesia b. Weathering c. Fire d. Wear and tear

a. Martesia

A factor that least affects production of smooth surface during machining. a. Hard metal deposits b. Interlocked and variable grain c. Reaction wood d. Size of pores

d. Size of pores

The distance that the stock being processed moves during given interval of time or operational cycle: a. Orthogonal cycle b. Feed rate c. Peripheral cycle d. Complete cycle

b. Feed rate

Exhibiting different properties when tested along axes in different directions: a. Hygroscopic b. Anisotropic c. Isotropic d. Plagiotropic

b. Anisotropic

Due to alternating humidity and drying which is common in the Philippines, what would you recommend as a remedy to this situation that causes problems in seasoning? a. Subject heater b. Subject to constant air circulation c. Install a vapor barrier d. Regulate the room temperature

c. Install a vapor barrier

Process of submerging wood in a tank of water-soluble preservative. a. Vacuum treating b. Dipping c. Hot and cold bath d. Osmosis

b. Dipping

Which of the given species of wood belong to the Fagaceae family? I. Mt. Apo Oak II. Ulaian III. Pagatpat IV. Mankono a. II and IV b. I and III c. III and IV d. I and II

d. I and II