MM test 1

Which state of matter has neither definite shape nor volume

Gases

Which is most accurate definition of a fluid

A substance that can be made to flow or move

What is used to provide movement to a hydraulic power system

Liquids

Based on Bernoullis principle, velocity of a fluid increases while its pressure decreases as it

Reaches a constriction of a tube

Hydraulics are most like what state of matter

Liquids

Which of the following statement best describe pascal's law

Pressure on a confined liquid is transmitted equally in all directions

Which type of hydraulic power fluid is used for ship electrohydraulic steering and deck machinery system

Petroleum-based fluid

Which of the following systems uses synthetic, fire-resistant hydraulic fluid

Aircraft elevators

What is naturally occurring in the atmosphere that is one of the most undesirable qualities for air compressor

Moisture

Which of the following components of a pneumatic power system are used to store air at pressure greater than 600 pounds per square inch gauge

Air flasks

Which component move dishes through the dishwasher

Rack conveyor

What connects to ship service (ss) switchboards (swbds) to the ships service turbine generators (sstgs) so that any SWBD can't be connected to feed power and allow the generators to operate in parallel

Bus Tie

When one rudder takes longer than or lags behind a second rudder when the system responds to a change in the command angle in a condition, known as

Dynamic rudder split

A conditioning where the steering system positions, the rudder beyond the command angle, and the rudder remains at the position is known as

Overtravel

A condition where the rudders of a ship do not stop at the same exact angle, and that can only occur on ships with independently operated rudders is known as

Static rudder split

The steering ram is a

Double-acting piston

What is the purpose of mooring

Prevent the ship from drifting due to current or wind

An operator controls the electrohydraulic drive-by

Using the hydraulic pump stroke-control handwheel

What kind of anchor is used on the multipurpose amphibious assault ship (LHD) class

Standard navy stockless

The hoist slack wire rope safety device stops the elevator by

Deactivating a circuit

Which of the following is not a requirement for manned maintenance authority

The elevator trunk must be certified as gas free

Which of the following is not part of the drum shaft assembly

Knurled roller

What is the additional heat beyond that which is required to produce saturation Any specific pressure

Superheat

What is completed by transferring the heat from the substance or space being refrigerated to a colder medium

Refrigeration

Which valve controls the amount of refrigerant flowing to the evaporator

Thermostatic expansion valve (TXV)

Extensive damage to the compressor can occur if liquid is allowed to enter the

Compressor suction

Seawater removes heat from the refrigerant, by which component

The condenser

Which component is installed in the compressor to avoid damage to the compressor

Strainer

Which of the following are components to the refrigeration seawater condensing system

Tubes, pressure-reducing valve, sea water cooling pump

Which of the air conditioning (A/C) components absorbs heat at a low temperature and pressure and rejects heat at a higher temperature and pressure

Refrigerant

What component is located after the float valve and before the compressor in each air conditioning (A/C) plant

Evaporator

A float valve between the condenser and evaporator is installed to

Provide a seal between the gas and liquid sides, maintaining condenser pressure

The air conditioning (A/C) plant operates so the ventilated air throughout the ship can

Dehumidify and cool

Which type of fan is usually installed without ductwork

Tube Axial fans

Miss deck refrigeration equipment is self-contained, Meaning it is

Hermetically sealed

What is considered the byproduct of the distillation process

Brine

Low pressure (LP) steam distilling plants use steam from what system

Is auxiliary-exhaust steam system

In order to remove bromine or chlorine from the fresh water in a storage tank, what type of filter is used

Activated-carbon

What dissolves back into remaining seawater when it is rejected by the membrane during reverse osmosis (RO)

Sees salt

What is the purpose of the vacuum priming system

Keeps centrifugal pump primed

Where is portable water stored

Portable water tanks

Which item should be inspected for cuts, cracks, and distortion across sealing surface

Gasket

Which of the following safety devices secures the steam supply

Solenoid valve

What is the function of the anti-tampering device (ATD)

Used to prevent unauthorized adjustments to the temperature regulator

What component is perforated to allow for drainage during rinse and extraction

Cylinder

What is the purpose of the DW600B washer-extractor

Provides a structural support

What term indicates the natural tendency of objects at rest to remain at rest, and objects to remain in motion until acted upon by an outside force

Inertia

A fluid that has a relatively large change in velocity over a wide temperature signifies a

Low VI

Which is the most accurate definition of a fluid

A substance that can be made to flow, or move

Which of the following is a property of fluids

Being nearly impossible to compress

If two pistons are in a hydraulic system, the force on each piston will be directly proportional to its

Area

In a multichambered hydraulic system, The voice required to observe the fluid's inertia equals what

The original force

What is the outside power source that drives the hydraulic pump in hydraulic power systems?

Prime Mover

Hydraulic pumps transform energy from the driver into

Mechanical kinetic energy

What is the appropriate response to leaking mechanical joints in pneumatic piping

Replace O-ring seals to stop leaks

To which other system is the pneumatic power system similar

Hydraulic

Which of the following is not found on single-tank dishwashers

Rinse tank

which of the following is not a source of electrical power

Ships motor service generator (SSMG)

What is the primary control surface used to steer a ship through the water

Rudder

When the steering system turns the rudder beyond the commanded angle, then reverses direction to position the rudder where it Should have stopped it in a condition known as

Overshoot

The steering ram is a

Double-acting piston

A condition where the rudders of a ship do not stop at the same exact angle and that can only occur on ships with independently operated rudders is known as

Static rudder split

A type of hauling or lifting device (consisting of rope, cable, or a chain around a rotating drum) typically used for hoisting anchors is called a

Windlass

The change stripper is used to

Break out the chain if it clings or sticks during recovery

What is a capstan

A board, cylindrical, vertically mounted, revolving piece of a deck equipment used for winding mooring lines

Which of the following is not a type of test performed on elevators

Ratcheting drop test

Which of the following safety devices are designed to protect personnel

Audible alarms

Which component directs the wire rope from the drum to platform or trunk

Wire rope deflection sheave

What is heat that is present but not evident or apparent

Latent heat

The boiling point, or any given liquid varies, according to ——— the liquid

Pressure on

Which refrigeration component acts as pump for the refrigerant

Compressor

Which component as a storage tank for liquid refrigerant?

The receiver

When liquid refrigerant boils, what type of heat is picked up

Latent heat

What time best describes the circulation of sea water through the condenser

Continuous

Which of the following valves control the quality of circulating water flowing through refrigerant condenser

Water regulating valve (WRV)

What does the compressor do

Pressurize refrigerant vapor, increasing its pressure and temperature

Electrical equipment could spark and be hazardous, therefore——— or not electrical

Gravity coils

A float valve between the condenser and evaporator is instilled to

Provide a seal between the gas and liquid side, maintaining condenser pressure

Which of the following air components absorbs heat at a low temperature and pressure and rejects heat at a higher temperature and pressure

Refrigerant

Ventilation fan systems are operated for a maximum of——— per hour

20 minutes

What is considered a definition of the mess deck refrigeration equipment

Refrigerating system with a cabinet or housing that performs a specific function

What is a result of reduced supply-steam pressure as it passes through regulating valve

Superheated steam

Insoluble minerals that are formed in the water during evaporation process are called

Scale

By what means does the duplex strainer remove heavy, suspended particles, such as sand and slit

Centrifugal force

What is the physical process in which a solvent, such as water moves across a semi-Premable membrane and separates into two different concentrated solutions

Osmosis

A potable water pump is classified as which type of pump

Centrifugal

What is the purpose of the bromine cartridge

Kills or inactivates disease-carrying pathogens

Bromine content in sample water is indicated by ———intensity

Color

Which of the following maintenance procedures will mitigate hazards

Danger tags

What best describes a load alert unit

A pipe assembly with two pipes (legs)

What does the extractor cylinder hold

Clothing

Which of the following is true about the booster heater

Sanitizes laundry in washer-extractor