ENGINEERING MATERIALS

Question 1

Materials used in the fabrication of
agricultural machines.
a. Standard
b. Fabrication
c. All of the above

Answer 1

All of the above

Question 2

Materials that are ready to adopt as
component of agricultural machines such
as bearing, belts, pulley, etc.

Answer 2

Standard

Question 3

Materials that need to be processed
before it can be used as component of
agricultural machines such as bars, sheets,
plates, etc.

Answer 3

Fabrication

Question 4

Property of a material to join together

with other metal at liquid state.

Answer 4

Fusibility

Question 5

Ability of a material to resist indention

Answer 5

Hardness

Question 6

Materials that are rust resistant

Answer 6

GI sheets

Question 7

Recommended material for the
manufacture of pin sleeves and hitch pins
for walking-type power tillers.

Answer 7

Cold-rolled steel

Question 8

Material commonly used as axle for

agricultural machines.

Answer 8

a. Cold-rolled steel shaft

Question 9

Kind of steel used for making tractor

drawn disk plow bottoms.

Answer 9

b. Soft-centered steel

Question 10

Steel bar used as machine axle is ____.

Answer 10

b. cold-rolled steel

Question 11

Steel bars commonly used in the

manufacture of agricultural machines.

Answer 11

Mild steel

Question 12

What is the rule-of-thumb in the
amperage requirement of a welding rod?
a. 1-in. diameter per 1000 amp
b. 0.001-in. diameter per 1 amp
c. 0.1-in. diameter per 100 amp
d. All of the above

Answer 12

All of the above

Question 13

Which of the following metals is the
strongest?
Which of the following metals is the
strongest?

Answer 13

Tool steel

Question 14

The higher the carbon content of the

steel, the ____ it becomes.

Answer 14

b. stronger

Question 15

Standard length of bars available in

hardware.

Answer 15

20 ft

Question 16

When buying angle bars, the right

specification is ____.

Answer 16

a. thickness and width

Question 17

Required material designation for the
construction of gear based on PAES
standard.

Answer 17

AISI designation 1045

Question 18

Mild steel with 0.15 to 0.23% carbon
content (cold rolled) is designated by
American Iron and Steel Institute as ____.

Answer 18

and Steel Institute as ____.

a. AISI 1021

Question 19

Materials used in the manufacture of

disc plows and disc blades for harrows.

Answer 19

AISI 1080

Question 20

Steel with at least 0.80% carbon is
designated by American Iron and Steel
Institute as ____.

Answer 20

AISI 1080

Question 21

Cold-rolled steel shaft with 0.37% to
0.44% carbon content is designated by
American Iron and Steel Institute as ____.

Answer 21

AISI 1040

Question 22

ANSI means ____.

Answer 22

American National Standard Institute

Question 23

Material that is resistant to salt

corrosion.

Answer 23

Stainless steel

Question 24

Stainless steel used for food industry.

Answer 24

a. SS series 400

Question 25

Stainless steel used for hightemperature

applications.

Answer 25

SS 304

Question 26

Stainless steel used for architectural

purposes such as for rails for stairways.

Answer 26

SS 202

Question 27

The higher the schedule specification
of a steel pipe, the lower is its \_\_\_\_.
a. length
b. nominal diameter
c. thickness
d. None of the above

Answer 27

none

Question 28

If a metal has ⅛ in. thickness, it is

called as ____.

Answer 28

c. plate

Question 29

Material 4ft wide x 8ft long with

1/8in. thick is ____.

Answer 29

Metal plate

Question 30

Metal sheet with gauge number 14

means ____.

Answer 30

14 pieces in one-inch thickness

Question 31

In a 2in. pile of sheet, gauge-20 metal

sheet has ____.

Answer 31

40 sheets

Question 32

Which of the following metal sheets

is thicker than gauge 20?

Answer 32

Gauge 18

Question 33

The higher the gauge number of a

metal sheet, the lower the ____.

Answer 33

thickness

Question 34

Type of paint most suitable for

metals.

Answer 34

Acrylic paint