1. Referring to the triangle ABC below, the ratio of
Sine of angle B
op- posite side/hypotenuse for angle B is called
or Sin B
the:
203.72 GPa
2. A column 10 cm diameter and 2 m long is subject to
a compression force of 800 kN, which shortens the
column 1 mm. Find the modulus of elasticity.
Greater than
3. Ultimate tensile strength designed into an object
the allowable
must be:
working stress
Polymerization
4. In the petrochemical industry many different
re- actions,
prod- ucts are developed by:
which combine
small
molecules to
make larger
5. A word that refers to the change in the position of ones
a body, relative to some reference point is:
Displaceme
6. A 5000 litre oil tank contains 60 litres of water. If the
water is drained off and replaced with fresh oil of
relative density 0.95, what is the change in the nt 3 kg
mass of the tank's contents?
7. Grey cast iron is used for large motor and
compres- sor bases because it:
Dampens vibra-
tion and sound
well and it is
strong in
8. If the factor of safety was increased on an object compres- sion
from 4 to 5, the load on the object operating at and shear
maximum safe working conditions:
Must be
9. What is the angle of inclination of a stairway with reduced from
the floor, if the steps have a tread of 20 cm and a the original.
rise of 18 cm as illustrated in the sketch?
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, 3A1 - Test (III) questions correctly answered to pass
42 degrees
10. 17.28
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, 3A1 - Test (III)
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A tire that turned two and three quarter (2 ¾) rev-
olutions has turned an equivalent of
radians.
11. The formula mass for Na2SO4 is: 142
12. The material balance drawing usually
accompanies a/an: Process Flow Dia-
gram
13. A/an process is one that has no
temperature increase or decrease during the Isothermal
process.
14. Material Balances are usually shown in terms A mole of a sub-
of moles per unit of time because: stance will not
change regard-
less of the
phase, pressure
or tem- perature
300 MPa
15. A steel bar is 4 m long, and has a rectangular cross
section of 3 cm x 4 cm. It is in tension from a force
of 360 kN. Find the stress induced.
16. The mechanical property that determines whetherToughness
a
material will break or stand up under a sudden
impact or hard blow is:
17. The hardness of a material includes its ability to: Resist
penetration
18. A sector has sides of 5 m and an angle of 36°. 2. Electrolyte
Calcu- late the area of the sector. 3. Fluid
4. Family of
19. Galvanic corrosion occurs when one metal is metals
electri- cally connected to another metal in the
same:
1. Area of the boiler or vessel
20 22.4
. mm
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m²
1, 2
20 22.4
. mm
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