第二章船舶辅助机械

更新时间：2019-02-19 18:36:04 类别：二管轮

501、
When the desired rudder angle is attained by a ty
502、
A refrigeration system compressor crankcase is sw
503、
Operating a rotary pump at speeds in excess of de
504、
Refrigeration system compressor crankcase sweatin
505、
Which bearing will carry the load on two small po
506、
Sweating of the refrigeration system compressor c
507、
An increase in rotor clearances in a rotary pump
508、
The internal force of a material, which tends to
509、
In an electro-hydraulic steering system, under mo
510、
Crankcase sweating in a refrigeration system is c
511、
If a refrigeration system compressor crankcase is
512、
A multistage centrifugal pump can be BEST describ
513、
Propeller pitch speed minus ship speed divided by
514、
Which of the devices listed, when used on an elec
515、
The sensible heat of air is dependent upon the __
516、
If an air compressor is used to supply compressed
517、
When it is necessary to open a refrigeration syst
518、
If an air compressor is used to supply air primar
519、
A cracked diaphragm in a thermostatic expansion v
520、
In order to distribute the side pressures over a
521、
Which of the listed operating conditions would ha
522、
Broken valve strips in an operating low pressure,
523、
Which of the problems listed represents the major
524、
If the pump for a hydraulic anchor windlass is ov
525、
If a refrigeration compressor were short cycling
526、
The part of the anchor windlass that engages the
527、
Air blowing from the intake air filter of an oper
528、
If a refrigeration crankcase compressor were shor
529、
Which of the following problems would be the prob
530、
In which of the listed hydraulic systems will the
531、
Which of the following problems could cause air t
532、
A refrigeration unit will tend to short cycle whe
533、
A vacuum is initially created in a flash type dis
534、
What color is used to indicate the last shot of a
535、
If a refrigeration compressor is short cycling on
536、
Most pump manufacturers recommended that the disc
537、
Excessively low air pressure occurring in the int
538、
The refrigeration compressor in a water cooled re
539、
In the operation of a flash type evaporator equip
540、
Most pump manufacturers recommend that the suctio
541、
Which of the following statements about pump oper
542、
Which of the following precautions should always
543、
If an electric motor driven air compressor fails
544、
Machinery driving fuel oil transfer and fuel oil
545、
An air compressor can be unloaded at start-up by
546、
Flexible hose under pressure in a hydraulic syste
547、
Which of the following statements describes the r
548、
If a refrigeration compressor will not start, the
549、
The lowest temperature required to cause self-sus
550、
The purpose of the wearing rings used in a centri
551、
When a refrigeration compressor motor fails to st
552、
Air compressors are equipped with unloading syste
553、
The simplest method to use for determining if a c
554、
Which of the following statements concerning butt
555、
If a large difference exists between the compress
556、
Pressure in an operating hydraulic system is deve
557、
The accumulation of air and other non-condensable
558、
Which pump installation would require an external
559、
A lube oil filter can be used to remove most cont
560、
When installing a hydraulic hose, which of the fo
561、
Air entering an air-cooled refrigeration system i
562、
The presence of bubbles in a refrigeration system
563、
Dirt should not be allowed to contaminate a greas
564、
The function of a centrifugal pump double volute
565、
Differential pressures can be measured with the u
566、
Which of the listed statements is a characteristi
567、
The valve best suited for throttling gas or liqui
568、
In order to properly remove air from the casing o
569、
Scale accumulation on evaporator heat exchange su
570、
Excessive circulation of the lubricating oil with
571、
Which of the following centrifugal pump component
572、
Sludge may form in the crankcase of an air condit
573、
Which of the following statements is correct conc
574、
If your vessel bums 8 tons of fuel per hour at 15
575、
The percentage of impurities in a specific fuel o
576、
Which of the listed characteristics can be applie
577、
Foaming of the oil in a refrigeration compressor
578、
Excessive scale formation in a distilling plant m
579、
In a refrigeration system, foaming of the crankca
580、
The centrifugal pump component responsible for co
581、
Excessive oil foaming in the crankcase of a refri
582、
The basic function of the centrifugal pump impell
583、
Which of the following statements is correct conc
584、
One of the consequences in continuing to operate
585、
The sudden reduction of pressure occurring within
586、
If an operating bilge pump is developing good vac
587、
A centrifugal pump produces flow with a resulting
588、
The size of ball and roller bearings can be ident
589、
An advantage of a helical gear pump over a simple
590、
Refrigerant is normally sub-cooled in a refrigera
591、
The principal purpose of sub-cooling liquid refri
592、
If a bilge pump is able to develop vacuum, but is
593、
Sub-cooling is a method of reducing the temperatu
594、
Some vessels are equipped with a water lubricated
595、
Under normal conditions, the refrigerant enters t
596、
An excessive amount of water is prevented from en
597、
Refrigerant enters the condenser as a _____.
598、
If the pump for a hydraulic anchor windlass is ov
599、
An independent bilge suction is required for ____
600、
In a flash distilling unit, evaporator feed （seaw
601、
The function of lubricating oil is to _____.
602、
A dirty intercooler on the ship service air compr
603、
Which of the listed conditions will cause the feed
604、
Under normal operating conditions, the highest te
605、
A dirty intercooler on an air compressor will cau
606、
The effect of high vapor superheat in a refrigera
607、
Excessive lube oil consumption by a reciprocating
608、
In which of the listed refrigeration system compo
609、
The vacuum maintained in the salt water feed heat
610、
The refrigerant gas returning to the compressor s
611、
If the electric motor driving an air compressor f
612、
The low pressure side of a refrigeration system i
613、
The component of a refrigerating system in which
614、
In which of the areas listed would you expect to
615、
An AC synchronous transmission type remote steeri
616、
To operate a centrifugal fire pump at reduced cap
617、
Which of the following best describes the thermod
618、
The discharge rate or capacity of a centrifugal p
619、
When operating with a negative suction head, whic
620、
The refrigerant leaves the evaporator of a refrig
621、
Reduced capacity, accompanied by vibration and no
622、
In order to accurately measure very low pressures
623、
If a centrifugal bilge pump were continually oper
624、
Which of the listed pressure control valves would
625、
The temperature of a refrigerant gas is the highe
626、
Condensate formed within the first-effect tube ne
627、
A centrifugal pump attempting to develop flow aga
628、
A compound gage is used to measure _____.
629、
Which of the listed components is considered to s
630、
Which of the listed refrigeration system componen
631、
Which of the valves listed is NOT considered to b
632、
Excessive oil foaming in the crankcase of a refri
633、
Which of the listed statements is correct concern
634、
A compound gauge is typically installed on the __
635、
When refrigerant leaves the receiver, it flows ne
636、
The type of gauge most commonly used to measure p
637、
Refrigerant is circulated through a refrigeration
638、
The temperature of the refrigerant in the evapora
639、
Which of the following statements is true concern
640、
Which of the following types of hydraulic pumps w
641、
An increase in the heat load to a refrigeration s
642、
The discharge head of a centrifugal pump will var
643、
To thoroughly pump out the bilges using a horizon
644、
Which of the following terms would best describe
645、
A refrigerant with oil in solution has a _____.
646、
Machinery operating features are designed to help
647、
On which of the following heated surfaces of a fl
648、
Strainers are commonly used in hydraulic systems
649、
Excessive oil foaming in the crankcase of a refri
650、
In a compression refrigeration cycle, the tempera
651、
Which of the following statements concerning ener
652、
By which of the following means is force efficien
653、
Which of the listed statements is correct concern
654、
When the vessels steering wheel on the navigation
655、
Which of the conditions listed represents the gre
656、
In the design of hydraulic piping and equipment c
657、
If a refrigeration compressor is running continuo
658、
Which of the valves listed should be used either
659、
Which of the following modes of heat transfer doe
660、
A gate valve installed in a pipeline should be __
661、
The movement of heat within a fluid, caused by th
662、
Air compressor cylinder un-loaders enable the com
663、
Which of the conditions listed will cause a refri
664、
Which of the listed methods of heat transfer take
665、
The unloading system on an air compressor will __
666、
A warmer than normal compressor suction line migh
667、
Which of the following conditions must exist for
668、
In the refrigeration system, a shortage of refrig
669、
Condensate must be drained from the intercooler a
670、
If a refrigeration system were short of refrigera
671、
When air becomes trapped in the hydraulic fluid o
672、
Before starting a reciprocating, steam-driven pum
673、
The air charge leaving an intercooler, or after-c
674、
Noise in a refrigeration compressor can be caused
675、
Thermal energy in transition is also referred to
676、
"Flooding back" is a condition where the liquid r
677、
The energy associated with molecules is known as
678、
Overgreasing of ball bearings installed on pumps
679、
Air trapped in the hydraulic fluid of a steering
680、
While troubleshooting a refrigeration system for
681、
On small, low pressure, air compressors, the cyli
682、
To correct the condition of slugging and flooding
683、
Power is defined as the _____.
684、
Which of the listed devices would be installed at
685、
Air line lubricators are used in compressed air s
686、
When a vessel is in dry-dock, the vessel ’s engin
687、
If you change from a low pour point lubricant to
688、
Mechanical energy in transition is referred to as
689、
Badly leaking refrigeration compressor discharge
690、
The delivery rate of an axial-piston hydraulic pu
691、
Which of the following terms could be applied to
692、
If the discharge valves on a refrigeration compre
693、
Increasing the speed of a centrifugal pump will r
694、
Excessive air leakage into the suction side of a
695、
While inspecting the steering system at sea, you
696、
Which of the following forms of energy is demonst
697、
The capacity of a centrifugal pump can be increas
698、
A spur gear pump should be operated with the disc
699、
The oil in a cargo winch gear box should be sampl
700、
When the steering gear is in operation, you shoul
701、
An excessive charge of refrigerant in an air-cool
702、
The output volume of a positive fixed displacemen
703、
If you are given the job of adding hydraulic flui
704、
A gradual decrease in the discharge pressure of a
705、
The rate of heat transfer from a hot region to a
706、
Who is responsible for ensuring that someone is as
707、
Which of the following statements is correct conc
708、
When a refrigeration compressor has developed a h
709、
On tank vessels equipped with power operated carg
710、
If the viscosity of the liquid being transferred
711、
If the suction pressure at the refrigeration comp
712、
A salinity indicator is used to determine the ___
713、
If the relief valve on the discharge side of a hy
714、
The rate of heat transfer between the hot and col
715、
The temperature differential occurring between th
716、
The general purpose of a heat exchanger is to ___
717、
Which of the following problems could cause the h
718、
An increasing head pressure in a refrigeration sy
719、
A salinity indicator is used to determine the ___
720、
If the head pressure of a reciprocating refrigera
721、
Pitting in the suction areas of a centrifugal pum
722、
The control mode in which the final control eleme
723、
One cause of high head pressure occurring in a re
724、
The usual symptoms of cavitation in a centrifugal
725、
Which of the problems listed would came the disch
726、
Low compressor head pressure in a refrigeration s
727、
A pressure drop through the refrigerant liquid li
728、
Heavy wear in a particular area of the inner circ
729、
Which of the listed pumps is NOT a positive displ
730、
If the thermal bulb of an expansion valve is inco
731、
The major source of chemical contaminants in hydr
732、
The amount of fluid friction or internal friction
733、
Thermostatic expansion valves can be adjusted for
734、
A grease gun is generally used to lubricate a ___
735、
An internal bypass is provided on some hydraulic

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