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English 20 Public

Review questions about agricultural structures and other allied topics

Study Slideshow

Refers to the capacity of the material to resist fracture under impact loading. A. Toughness B. Hardness C. Elasticity D. Workability

A. Toughness

5

Sheet metal that is thicker than gauge 22. A. gauge 24 B. gauge 26 C. gauge 14 D. both a and b

C. gauge 14

5

Refers to a swine with 40 to 65 kilograms in weight A. grower B. fattener C. finisher

A. grower

5

The ability of a material to retain its strength and other properties over a considerable period of time. A. Durability B. Elasticity C. Toughness D. Stiffness

A. Durability

5

Smaller members which directly support the floor or ceiling. A. Joists B. girders C. rafters D. purlins

A. Joists

5

The minimum space requirement for weaners (up to 10 kg weight) is 0.11 square meter per animal. How many pigs of this category can be confined in a 2m by 1.5m pen?

(2x1.5)/0.11=27.3 =27

10

How many bd-ft is in a piece of lumber with a cross-section of 2”x4” if its length is 216 in?

bd ft = [(2 x 4) (216 x 1/12)]/12 = 12

10

What force is required to punch a 20-mm-diameter hole in a plate that is 25 mm thick? The shear strength is 350 MN/m^2.

P = 350 [pi (20) (25)] = 549.8 kN

15

A load which tends to shorten or crush a structural member. A. compression B. shear C. tension D. bending

A. compression

5

Structural element that transmits, through compression, the weight of the structure above to other structural elements below. A. Truss B. Column C. Beam

B. column

5

One of the most commonly used building material in many parts of the world because of its reasonable cost, ease of working, attractive appearance and adequate life if protected from moisture and insects.

Wood

5

An inclined or horizontal member that establishes the upper edge of a truss. This member is subjected to compressive and bending stresses. A. king post B. bottom chord C. top chord D. webs

C. Top chord

5

A simply supported beam has a span of ‘L’ and a uniformly distributed load of ‘w’. What is the value of the reactions at the support?

1/2 wL

10

Engr. X & Engr. Y were asked by Dean Santos to design 5 pcs. of benches. The engineers found out that they needed 10 pcs. of 2"x3"x12' and 6 pcs. of 2"x2"x12 for each bench. How many board feet of lumber would they need per piece of bench?

Total bd ft= [(10) (2x3x12/12)] + [(6)(2x2x12/12)] = 84 board feet

10

A wooden post with a cross-section of 200mmX100mm has a length of 2,500mm. What is the slenderness ratio?

Slenderness ratio = effective length/least radius = 2500mm/100mm = 25

10

aluminum rod is rigidly attached b/n a steel rod and a bronze rod. Axial loads are applied at the positions indicated. Find the max. value of P that will not exceed a stress in steel of 140 MPa,in aluminum of 90 MPa, or in bronze of 100 MPa

10,000 N or 10 kN

15