5-34. Belt selection for a large motor should be
based on what ideal percentage of motor size?
1.
100%
2.
125%
3.
150%
4.
175%
5-35. What type of air distribution system is used for
isolated service or in situations where special
requirements dictate a single path?
1.
Parallel
2.
Loop
3. Radial, one way
4.
Radial, two way
5-36. What type of closed-route air distribution
system can be used throughout a building?
1.
Parallel
2. Loop
3.
Radial, one way
4.
Radial, two way
5-37. Normally, a compressed air distribution system
is sized by calculating what factor?
1.
Friction loss
2.
Pipe size
3. Compressor size
4. Oil loss
5-38. In situations where compressed air pipes are
pitched upward causing condensate to flow
against the flow of air, e minimum pitch of
how many inches per hundred feet should be
allowed?
1.
10
2.
2
3.
6
4.
4
5-39. When testing e system with dry air or
nitrogen, you should use what percentage of
maximum working pressure for a minimum of
4 hours?
1.
7
5%
2.
100%
3.
125%
4.
150%
5-40. What maintenance program prevents most
major prime-mover breakdowns?
1.
Manufacturer
2. Operator
3.
Equipmentman
4.
Construction Mechanic
5-41. When a manufacturer’s recommended
tolerance level between two moving parts is
exceeded on a compressor, you must perform
which, if any, of the following actions?
1.
A component adjustment only
2. An equipment overhaul only
3. A component adjustment or an equipment
overhaul
4.
None of the above
5-42. Air filters should be checked and cleaned a
minimum of how often?
1.
Daily
2. Weekly
3. Monthly
4. Quarterly
5-43. For assistance in air system maintenance and
inspection, you should refer to what NAVFAC
publication?
1.
P-320
2. P-322
3.
P-324
4.
P-330
5-44. When done properly, what is the most
important single point in the successful
operation of a boiler?
1.
Installation
2. Selection of the site
3. Accessory procurement
4.
Quality of replacement parts
5-45. A boiler should normally be installed in which
of the following locations?
1.
Close to the galley
2. Close to the laundry
3. Near the area of greatest load demand
4.
Near the area of least load demand
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