leaking unloader
tripped circuit breaker
control line leak
defective pop valve
第1题：
broken inlet valves
broken discharge valves
pulsations in the air distribution system
overloading of the air distribution system
第2题：
charge air receiver
scavenging air belt
turbine
air cooler
第3题：
A.prime mover speed
B.number of energized main motor poles
C.propulsion generator field strength
D.electric coupling field strength
第4题：
an immediate crankcase explosion
oil contamination in the compressed air
a decrease in compressor capacity
no immediate loss of the compressed air capacity
第5题：
After operation, start the electric motor.
Before operation, stop the electric motor.
Before operation, start the electric motor.
After operation, stop the electric motor.
第6题：
leaking discharge valve
jammed suction valve
tripped overload relay
broken discharge un-loader
第7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8题：
what is the use of “unloader “on main air compressor ?
第9题：
Suez Canal searchlight, air compressor and air conditioning compressor
Air compressor, boiler blower and refrigeration plant
Boiler blower, Suez Canal searchlight and refrigeration plant
Suez canal searchlight, air compressor and boiler blower
第10题：
short proof
ground proof
explosion proof
overload proof