11
Sub-cooling in the air-cooled
condensers take
place in
17
bottom of the condenser
b.
every part of the
condenser
Devices made of a high specific
heat material are cooled
and
provide long term
heat
absorption
without the
refrigeration system attached to
them are known as
middle of the condenser
d.
top of the condenser.
a.
bimetal
b.
eutectic plates
12. Dirty condenser will produce
c
thermocouple
d
thermal conductors
a.
high heed pressure
b.
high refrigeration
18.
The thermometer used to
c.
low suction pressure
d.
sensible heat.
13.
The lowest outdoor ambient
measure the temperature of air
is called
dry-bulb thermometer
temperature a standard air-
cooled unit will operate
satisfactorily
is
a. 65°F
b.
70°F
C.
80°F
d.
100°F.
14. The MOST common cause of
low suction
pressure in an air-
conditioning
system is
a.
b.
pocket thermometer
standard thermometer
d.
wet-bulb thermometer.
19.
The recommended cooling
humidity for an air conditioner
room is
a.
30%
b.
40%
C. 50%
d.
60%.
20.
overloading the system
a.
clean air filter
b. clogged air filter
C.
d.
15.
On three-phase unit, the
under loading the system.
voltage on all three pairs of logs
of the power source MUST be
within
21.
The common instrument used
to measure temperature and
humidity at the same time is
called
a.
anemometer
b. menometer
C.
psychrometer
d. thermometer.
Air that is holding all the
moisture is termed as
a.
3% of each other
b.
10% of each other
c.
15% of each other
d.
20% of each other.
a. condensed
b. saturated
16.
Latent heat load of a product is
C.
subcooled
related to the percentage of its
a.
heat quantity
b.
moisture content
C.
pressure
d. specific heat.
22.
d. superheated.
The equivalent of 0.000008m is
a. 8km
b. 8Mm
C.
8mm
d. 8um.
See next page
​