Term
The groove that is cut in the top half in the lining of a shell bearing
should not extend closer to the ends than:
Select one:
a. 1.7 cm
b. 1.25 cm
c. 10 mm
d. 3 mm
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b c
d a
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, 2 of 150
Term
How often should the desiccant be checked during a dry layup?
Select one:
a. Semi-annually.
b. Bi-weekly to monthly.
c. Annually.
d. Daily.
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d c
a b
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3 of 150
Term
In the lithium bromide refrigeration system, what is the function of
the concentrator (generator)?
Select one:
a. To cool the concentrated absorbent
b. To speed up the evaporation of the refrigerant
c. To increase the absorbency potential of used absorbent
,d. To exchange heat between the high temperature refrigerant
vapour and the atmosphere
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c a
b d
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4 of 150
Term
Lock washers:
Select one:
a. Prevent the equipment from being dismantled
b. Reduce the chances of unwanted turning of the bolt or nut
c. Distribute the lock nut force
d. Prevent marring of the work surface
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c a
d b
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5 of 150
Term
An advantage of a thermal wheel heat recovery system is
Select one:
a. Thermal wheels require very little space.
b. Piping and pumps are not required.
c. Sealing arrangements are simple and effective.
d. There is no cross contamination of the supply air steam.
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a c
b d
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6 of 150
Term
The top of a ladder should extend approximately _____ above the
level of the upper landing to which it provides access.
Select one: