更多"The device, which is installed in t"的相关试题:
[单项选择]The purpose of an air compressor unloading device is to （）
A. drain water from the air receiver
B. drain water from the cylinders
C. delay the compression process until the motor is up to speed
D. check pump alignment
[单项选择]An electrical device which employs a stationary armature and a rotating electromagnetic field is used aboard ship as a （）.
A. magnetic amplifier
B. ship’s service alternator
C. three-wire DC generator
D. saturable core reactor
[单项选择]An electrical device which prevents an action from occurring until all other required conditions are met is called a/an （）.
A. limit
B. monitor
C. modulator
D. interlock
[单项选择]A device which functions to bring a diesel engine to a full stop to protect it from damage is known as a/an （）
A. torque limiter
B. over-speed trip
C. over-speed governor
D. load limit governor
[单项选择]A device which prints out a permanent record of the plant operating conditions is known as the （）.
A. analogger
B. bell logger
C. alarm logger
D. data logger
[单项选择]A(n) （） is a device which adds to the energy of a liquid or gas causing an increase in its pressure and a movement of the fluid.
A. pump
B. engine
C. turbine
D. boiler
[单项选择]A person may operate an air compressor in which of the following areas on board a tank barge?（）
A. Pumproom
B. Generator room
C. A space adjacent to a cargo tank
D. A space two meters from a cargo valve
[单项选择]An un-loader is installed on an air compressor to （）.
A. bypass the high pressure stage to the low pressure stage on 100% of the air compressors in service
B. prevent excessive inter-stage pressure buildup
C. control compressor discharge pressure
D. remove all but the frictional load during starting
[单项选择]The over-speed trip device installed in some diesel engines is automatically actuated by（）
A. spring force
B. hydraulic pressure
C. centrifugal force
D. mechanical linkage
[单项选择]Which device is designed to automatically hold the load if power should fail to an electric winch?（）
A. Pneumatic brake
B. Electromagnetic brake
C. Hand brake
D. Motor controller
[单项选择]Which of the listed devices would be installed at a control system air pressure reducing station?（）
A. Moisture separator
B. Vacuum breaker
C. Lubricator
D. Non-return valve
[单项选择]Which device provides the main means in the GMDSS for locating ships in distress or their survival craft（）.
A. Radio direction finder
B. Satellite EPIRBs
C. MF/HF DSC
D. VHF homing device
[单项选择]Which of the devices listed is installed on a diesel engine to isolate some of the crankshaft vibrations caused by rotational and reciprocating forces?（）
A. Planetary gear set
B. Torsional vibration damper
C. Friction clutch
D. Air bladder clutch
[单项选择]Which tensioning device is used with chain to secure heavy vehicles aboard Ro-Ro vessels（）.
A. Chain lever
B. Buckle tensioner
C. Adjust-a-matic tensioner
D. Ratchet tensioner
[单项选择]Which of below device has the maximum coverage range（）
A. AIS
B. Radar
C. VHF
D. LRIT
[单项选择]A centrifugal compressor’s purge recovery unit（）
A. reclaims water
B. purges air without losing refrigerant
C. purges air with some loss of refrigerant
D. purges lube oil from the refrigerant
[单项选择]Refrigeration system compressor crankcase sweating is an indication of （）.
A. insufficient lube oil circulating through the system
B. excessive circulation of lube oil through the system
C. insufficient refrigerant in the system
D. an overworked compressor
