overfeeding of the expansion valve
damage to the condenser
constant running of the compressor
flooding of the receiver
第1题：
Badly leaking refrigeration compressor discharge valves will cause ______.
A.overfeeding of the expansion valve
B.damage to the condenser
C.constant running of the compressor
D.flooding of the receiver
第2题：
increase the flow of the cooling water through the condenser
adjust the high pressure cutout to maintain the desired pressure
open the hot gas bypass temporarily to reduce capacity
purge non-condensable gases to reduce the excess pressure
第3题：
If the refrigeration compressor crankcase is sweating, the cause may be due to
A.a shortage of refrigerant
B.the compressor running continuously
C.liquid refrigerant returning to the compressor
D.the compressor short cycling on the high pressure cutout
第4题：
system was overcharged with refrigerant
high pressure switch was improperly adjusted
expansion valve strainers were fouled
suction valves were leaking slightly
第5题：
increase compressor discharge pressure on demand
increase compressor operating speed as necessary
allow the motor to turn the compressor opposed only by friction
reduce the compressor frictional load when starting
第6题：
If the suction pressure for an operating refrigeration compressor is below normal, the cause may be ______.
A.an excess of liquid refrigerant
B.the expansion valve overfeeding
C.a fouled compressor suction strainer
D.the compressor short cycling
第7题：
overheated compressor bearings
excess lube oil viscosity
carbon deposits on the compressor piston rings
wax crystals forming in the lubricant
第8题：
The sensing line for the low pressure cutout switch to a refrigeration system is located ______.
A.in the chill box(冰箱)
B.before the receiver
C.on the suction side of the compressor
D.on the discharge side of the compressor
第9题：
high discharge pressure
frosting of the crankcase
high temperature of the overboard water
low suction pressure of compressor
第10题：
continuous running of the compressor
high suction pressure
high discharge pressure
short cycling of the compressor on the water failure switch