MM A-School Test 1
Refrigerant cylinder us should not be exposed to temperatures above?
130°F
If refrigerant gets in your eye, how long should you wash your eyes out for?
15 minutes
Newton's First Law
A body at rest tends to remain at rest. A body in motion tends to remain in motion
Boyles law
A constant temperature, a change in pressure causes and inversely proportional change in value.
Element
A substance that cannot be reduced by chemical means
Electrohydraulic
A system of having an electric motor driven hydraulic pump that creates force through a hydraulic medium to drive a federal motor.
Idler Tension
Adjusts drive chain tension
What term describes the system used to protect the temperature system and electrical equipment ?
Air-conditioning
Newtons second law
An imbalance of force on a body tends to produce acceleration in the direction of the force
What component is used to prevent on authorized adjustments of the temperature regulator?
Anti-tampering device
Load
Any device that uses the power from power producing equipment
What is Brine?
Any water in which the concentration of chemical salt is higher than what it is in seawater?
Matter
Anything that occupies space and has weight.
What term describes the pressure exerted by the weight of the atmosphere?
Atmospheric pressure
Which component shift control from the online unit to the standby unit?
Auto change over transfer switch
Desalinization plants provide water for?
Boilers, diesel engines jacket water, and portable water system
What should be dispose in water only and enforces the wearing of PPE?
Calcium hypochlorite
What are the two scales the Navy used to measure with?
Celsius in Fahrenheit
What is condensation?
Change and physical state from a gas to a liquid.
What is evaporation?
Change and physical state from a liquid to a gas.
What are the five components of a refrigerator?
Compressor, receiver, condenser, TXV, & evaporator.
What component is located on the high side of the basic refrigerant cycle?
Condenser
Desalinization plants
Converts see what her into freshwater
What Capone it collects water in a distilling plant?
Distilling trough
What is used to prevent temperatures from the coming too low?
EPR valve
What is the term of the anchor windlass power unit?
Electrohydraulic
What is the main advantage of the Leslie Constantemp what are heater?
Eliminates the need for hot water tank
Kinetic energy
Energy of motion
True/false liquid is compressed to create hydraulic pressure?
False
What are the three skids that reverse osmosis is it mounted on?
Filter skid, high pressure skid, and reverse osmosis skid.
Anything that is made to flow or can be made to flow is a what?
Fluid
The room converts to......... to .........energy?
Fluid to Mechanical
What is the primary purpose of Refrigeration?
Food preservation
Newton's Third law
For every action there is an equal or opposite reaction
What time describes the lowering of an anchor by gravity?
Freefall
What is the Leslie constantemp temperature range ?
From 110 to 180
What is Laminar flow?
Has a streamline flow with liquid particles that flow smoothly and even layers and friction losses are minimal.
Latent heat of fusion
Heat energy added to a solid to change it to liquid.
What removes heat from substances and equipment?
Heat exchanger
Latent heat
Heat that is added or move from a substance while it is in the process of changing its physical state (cannot be measured by thermometer).
Latent heat of condensation
Heat that is removed from vapor to turn to liquid
Latent heat of Vaporization
Heath is added to liquid to change it to beaver
What is a brominator?
If this affects what are by treating chemically proportionally to water flow rate, and temperature.
What is the purpose of hydraulics?
It is used to power various tools and machines. For ex: anchor winless, cranes, steering gears, and rocket launchers.
The crossheads connects to the ...... & ......?
Linear and radial movement
What are the three types of rotor and go indicators?
Local remote and master
E stop/ emergency stop button
Located on the control panel.
Door Block
Located on the door to prevent closing if load/unload device is in any position except stow position.
Blend valve
Maintains water temperature of -/+ 4°F
What term describes the amount of matter an object contains?
Mass
British thermal units or (BTU's)
Measurement of heat energy in a substance.
What are testing requirement?
Medical & engineering
Reverse osmosis skid
Module skid where what are these pressure vessel
Principal of pressure
Most common units pounds per square inch or (psi) inches of mercury (in Hg) inches in water (H2O)
DW- 600B
Must be close to operate
Safety Observer
Must know role of all personnel at station stops conveyor under unsafe conditions.
What's term describes one of the key characteristics of refrigerant (The reason why it is used most often)?
No explosives
Where can PTR be found?
PTR chart
What provides the flow path for portable water?
Piping and valves
In what three ways is Mechanical Energy found?
Potential energy ,kinetic energy ,and energy in transition
What is force measured in?
Pounds and tons
Hydraulics
Practical application of liquids in motion
Pascals law
Pressure exerted on a confined liquid is transmitted in all directions and acts with equal force on all areas.
Door interlock
Prevents the conveyor from operating unless only two doors are open.
Whelps
Projection that fits into a chain link.
Turbulent flow
Random or a red pattern of flow and it results in an inefficient operation it also increases friction loss and has increased pressure drops.
What component remove heat from objects or materials and maintains them?
Refrigerant
What cooling agent is used to cool?
Refrigerant
When he is added or move to cause a chemical change of temperature without changing the physical?
Sensible heat
What valve maintains a specific pressure on it area of a system?
Sequence valve
Washtub
Stainless steel drum; perforated to drain during rent instruction.
Potential energy
Stored energy or position possessed by an object
What type of actuator is used on a long work strokes?
Telescoping cylinder
What component meets peak demands?
The accumulator
What is known as the input source and have an electric motor with any type of engine?
The driver or prime mover
What provides mechanical feedback from the router to the differential control unit?
The follow up assembly
What is distillation?
The process of evaporating seawater then cooling it in condensing the resulting vapor to produce freshwater.
Where is the writer angle indicator located on the bridge?
The writer and go indicator is located on the differential control unit (DCU)
What is the purpose of the writer angle indicator?
To indicate the angle of the rudder.
What is the purpose of anchor windlass?
To pay out or heave in
What's the purpose of the hydraulic system pump?
To produce force (pressure), transmit force through liquids, and convert force to mechanical work.
What are the general purposes of air-conditioning?
To protect temperature sensitive electronics and electrical equipment and to maintain proper temperature in ammunition storage spaces into also maintain comfortable crew living in the work kings basis
No pressure flash type advantages
To reduce Scale, classes at Lower boiling point, and requires less energy
What is the purpose of the reduction gear?
To reduce speed and increase torque
What are the dinner purposes of refrigeration?
To remove heat from spaces object or materials to maintain a lower temperature thing to run against we are in the primary purpose Is food preservation
What has a timer that starts the control chart and a master that energizes programmer systems only and it must be on to operate?
Toggles
What controls the flow of fluid and maintains a hydraulic lock/block?
Transfer block valve
True or false abominator uses chemicals to disinfect
True
True/false Are both liquid and gas a fluid?
True
Polycool
Use for delicate permanent cycles
Single tank
Used on small ships, officer messes, and CPO messes (ward room).
Filter skid
Used to clean
FW- 600B
Used to sanitize laundry by using steam
What term describes pressure below atmospheric pressure?
Vaccum
What are the two types of anchor windlass ?
Vertical and horizontal
What automatically stops the machine if there's excessive vibration?
Vibration switch
What is equal to the gravitational force with which an object is attracted to the earth?
Weight
When does the low air pressure activate?
When PSI Drops below 50 psi
High pressure skid
Where RO element takes place
What has drums fitted whelps to engage anchor chains?
Wildcats
