AUXSIM
AUXSIM: The Ultimate Refrigeration and Steering Gear Quiz
Test your knowledge on refrigeration systems, steering gear mechanisms, and maintenance protocols with our comprehensive quiz! Designed for professionals and learners alike, this quiz challenges your understanding and provides insights into essential maritime and mechanical systems.
Key Features:
- 30 carefully crafted questions
- Topics cover refrigeration, steering gear, and maintenance
- Designed for both beginners and advanced learners
It is an indispensable part of the entire steering gear arrangement of ships and dictates the exact behavior of the rudder response.
Steering wheel
Rudder angle
Propeller
Rudder Stock
The ______________ is the heart of your refrigeration system. It is an air pump that compresses refrigerant gas and changes its state, which allows it to absorb heat. This process results in cooling, which is then distributed to your facility via your air ducts.
condenser
Evaporator
Expansion joint
Expansion device
Compressor
It occur when moisture picked up by the refrigerant starts to freeze, building ice crystals that block the refrigerant passage in narrow passageways, for example in the expansion valve. This effect is called intermittent cooling, as the compressor stops after a while due to the blockage in the expansion valve.
Freeze ups.
Contamination
Sludge formation
Corrosion
What is the normal temperature of fruits and vegetable room?
+5 degrees celcius
0 degrees celcius
-5 degrees cecius
+35 degrees celcius
Type of steering mode in which the ship will automatically find its way to preset position point along a preset route. If the ship is forced out of the course, the function of this mode will use the rudder to get the ship back to course.
Auto pilot
Follow up
Manual
Non follow up
This is the room in which the actuator is located. On the top of the actuator there is a scale with degrees showing the angle of the rudder port/starboard and also signal transmitters and feedbacks for remote rudder indication and steering gear control system.
Telemotor
Steering Gear compartment
ECR
Wheelhouse
The _____________ contains tubes and fins that absorb the heat from the refrigerant flowing through it, causing the refrigerant to evaporate. The vapors are then carried back to the compressor where they are compressed again and cooled, completing the cycle.
Compressor
Evaporator
Expansion joint
Expansion device
Condenser
Parameters to be considered in operating a purifier, means the quantity of oil pumped into the purifier per hour.
Throughput of oil feed
Fuel inlet oil temperature
Density of oil
RPM of the rotating oil
The purpose of a ____________________ is to regulate the amount of liquid refrigerant entering the evaporator coil. This helps keep the pressure in your system at its optimum level, which prevents unnecessary costs and repairs
Expansion joint
Condenser
Expansion device
Evaporator
Compressor
Maintenance on purifier, which should be carried out every 4,000 operating hours or at least once every year.
Inspection
Cleaning of suction strainer
Overhaul
Oil change
The _________ connected in the system consists of silica gel to remove any moisture from the refrigerant
Compressor
Evaporator
Condenser
Drier
The ______________ is the part of a refrigeration system that absorbs heat from the air or other substance to be cooled.
Expansion joint
expansion device
Condenser
Evaporator
Compressor
Heat energy that causes a change in temperature (Joule).
Latent heat
Superheat
Heat transfer
Sensible heat
It is the location of the main control panel the steering gear system. This control panel features start/stop control alarms, signals and ability to acknowledge alarms.
Steering Gear compartment
Telemotor
ECR
Wheelhouse
What are the four main components of the refrigeration system?
Compressor, Condensing element, evaporation diaphragm, and expansion device
Heat Exhanger
Compressing additives
Condenser, evaporation diaphragm, compressing additives and expansion device
Evaporator, condenser, expansion device and compressor
Expansion joint
Expansion device, Compressor, Condensing element, evaporation diaphragm
Condensing element
It is an equipment with the sole purpose is to clean the oil from water and solid particles. What do we call on this?
Purifier
Oily water separator
Oil cleaner machine
Boiler
It is a component in Refrigeration system where it is commonly used for compressing and supplying the refrigerant to the system. Low-temperature vapor is drawn to it, where it is compressed into a high-temperature, high-pressure vapor
Compressor
Evaporator
Condenser
Expansion valve
Rate of heat flow by either conduction, convection or radiation.
Heat reactor
Heat transfer
Heat absorber
Heat resistance
As per standard requirement, the steering gear should be capable of steering the ship from 35 degrees port to ________ starboard and vice versa with the vessel plying forwards at a steady head-on speed for maximum continuous rated shaft RPM and summer load waterline within a time frame of maximum 28 seconds.
35 degrees
25 degrees
55 degrees
45 degrees
What is the means of removing impurities from fuel using purifier?
Removal element
Filtering device
Evaporation and condensing
Gravity and centrifuging
What do we call to this centrifugal separator for solid-liquid separation, which removes solids such as particles, oil, natural organic matter and color from processed liquid?
Boiler
Purifier
OWS
Clarifier
In starting Refrigeration system, how many percent is to be set on temperature control into MANUAL and adjust capacity control slide, otherwise compressor will trip on overload?
15%
10%
20%
5%
Ideal for testing on packages that contain liquids and that do not contain any air or have much headspace. Milk is often tested this way. Packages are placed in the chamber and it is subjected to a vacuum. An absorbent material such as paper towel is used and after the test, if the paper towel is moist, then the package is compromised.
Bubble emission test
Seal integrity
Dry chamber test
Altitude simulation method
Maintenance on purifier, perform complete separator every 18 months or 12,000 operating hours. Seals, bearings, and friction blocks are renewed.
Oil change
Overhaul
Inspection
Cleaning of suction strainer
One of the commonly used steering gear construction and is quite expensive in construction. The basic principle is same as that of a hydraulically-driven motor engine or lift.
Drum type
Vane type
Ram type
Base type
Steering gear has smaller space required, low installation cost, less weight and smaller power required for the same load, because it can transmit pure torque to the rudder stock.
Two-Ram hydraulic steering gear
Unidirectional steering gear
Four-Ram hydraulic steering gear
Rotary Vane steering gear
It is a metering device which is used to control the flow of refrigerant into the evaporator, or cooling coil, as a low-pressure, low-temperature refrigerant.
Evaporator
Compressor
Expansion valve
Condenser
In Refrigeration system, what is the state of the refrigerant from evaporator going to the compressor?
High pressure, high temperature liquid
Low pressure, low temperature gas
Low pressure, low temperature mixture of liquid and vapor
High pressure, high temperature gas
The _______________ is an important part of a refrigeration system. It controls the flow of liquid refrigerant within the system. It also helps prevent overcharging and undercharging of your cooling system.
Expansion joint
Condenser
Compressor
Expansion device
Evaporator
Acid content inside a system can emulsify with the compressor oil to form an aggressive oil dirt that reduces lubrication properties. This can lead to serious compressor damage. They can also cause a variety of other problems in a system, such as blockages of strainers, expansion valves and other tiny passages.
Sludge formation
Freeze ups
Corrosion
Quality
Maintenance on purifier, which consist of an overhaul of the separator bowl, inlet/outlet and operating water device every 4,000 operating hours or 6 months.
Overhaul
Inspection
Cleaning of suction strainer
Oil change
Refrigeration compressors that use pistons to move the refrigerant through a system of valves and chambers.
Rotary screw compressors
Reciprocating - rotary screw compressors
Reciprocating compressors
Rotary- reciprocating screw compressors
Steering mechanism is consist of two cylinders, a pump and a motor. The pump has a unidirectional variable displacement and constant speed flow.
Four-Ram hydraulic steering gear
Rotary Vane steering gear
Unidirectional steering gear
Two-Ram hydraulic steering gear
The pressure at which a substance at any given temperature can exist in equilibrium with both its liquid and vapor states
Saturation pressure
Saturation temperature
Saturated liquid
Saturated vapor
Other
Please Specify:
Presence of this inside the refrigeration system causes starving of evaporator and rapid condenser pressure rise cause compressor short cycling and frosting of expansion valve inlet
Moisture
Fuel oil
Air
Oil
HFO purification process wherein initial purification by gravity separation takes place. This also provides suction of fuel oil to the separator.
Settling tank
Sludge tank
Service tank
Drain tank
The temperature at which a substance reaches its boiling point.
Saturation pressure
Saturation temperature
Saturated vapor
Saturated liquid
Reciprocating single or two stage _____________ is commonly used for compressing and supplying the refrigerant to the system
Compressor
Pumps
Condenser
Expansion device
Steering gear system which works by introducing pressure into the compartments formed between a stator fixed to the ships structure and a rotor attached to the rudder stock.
Two-Ram hydraulic type steering gear
Unidirectional type steering gear
Four-Ram hydraulic type steering gear
Rotary Vane type steering gear
What do we call for the process by which the effects of gravity can be amplified by the use of centrifugal force to the extent that the separation process becomes rapid and continuous centrifuges work by rapidly spinning a bowl containing the liquid, thus producing the required centrifugal force to produce separation?
Circulating
Eliminating
Rotating
Centrifuging
It’s a system that has the ability to cool and maintain temperatures within a given range. It’s usually mechanical but can also be achieved by using simple means such as using water or any other liquid to lower the temperature.
Lube oil
Steam
Heat Exchanger
Refrigeration
Fuel
Purification
F.W Cooling
Presence of this inside the refrigeration system causes high condenser and compressor temperature, abnormally high discharge pressure, jerky pointer gauge and very small bubbles in liquid sight glass.
Moisture
Fuel oil
Air
Oil
Port state control has very strict on this. Many ships have been fined and detained due to such faults pointed out during port state control inspection.
Oil leakages from steering gear
Unsatisfactory steering gear
Malfunctioning steering gear
Excessive noise from steering gear
The __________ unit act as a heat exchanger to cool down the hold or room area by transferring heat to the refrigerant.
Expansion device
Condenser
Evaporator
Compressor
Moisture can cause __________. However, moisture in combination with a HCFC refrigerant containing chlorine (like for example R-22 or R-409A) creates much more serious, as the chlorine hydrolyses with the water to form hydrochloric acid (HCl) which is aggressive to most metals.
Contamination
Freeze ups
Shields
Corrosion
How to troubleshoot a purifier, when the rectangular ring in the operating slide or bowl body is defective?
Correct the ring
Clean the strainer
Fit the nozzle
Renew the rectangular ring
This is a very efficient way to test packages that have some air or gas in the package. These package are submerged in a leak detecting equipment that contains water and uses a vacuum to see if there are leak, then the package is faulty
Bubble emission test
Seal integrity
Dry chamber test
Altitude simulation method
It is a component in Refrigeration system wherein this process, as heat is removed from the vapor, a change of state takes place and the vapor is condensed back into a liquid, at a high-pressure and high temperature.
Evaporator
Expansion valve
Compressor
Condenser
It is the most important aspect of any refrigeration circuit and ensures that your circuit is hermetically sealed.
Leak test
Current test
Ground test
Parallel test
The ________________ coils in a residential or commercial air conditioning system usually contain a refrigerant called R-22, which was developed for use in these systems. R-22 has been banned by EPA because of its high global warming potential (GWP), but some older systems still use it.
Expansion joint
Condenser
Evaporator
Expansion device
Compressor
Which statement is not true in check points of condensers on Refrigeration system?
Refrigeration inlet and outlet temperature
Air intake and exhaust temperature
Condenser oil condition
Pump motor flow temperature
In Refrigeration system, what is the state of the refrigerant from expansion valve going to the evaporator?
High pressure, high temperature liquid
Low pressure, low temperature gas
Low pressure, low temperature mixture of liquid and vapor
High pressure, high temperature gas
What do we call on this solid assembly made up of high thin style steel working within purifier frame with ample space to accumulate and discharge is latch?
Bowl
Disck stack
Friction clutch
Hood
The_____________ is the part of a refrigeration system that removes heat from the refrigerant. It is an air-cooled device, so it must be mounted where air circulation is good
Expansion device
Steam
Condenser
Compressor
Compressor
Expansion joint
Shell and tube type__________is used to cool down the refrigerant in the system
Compressor
Expansion device
Evaporator
Condenser
They are called Refrigeration system impurities and element except?
Fuel oll
Air
Moisture
Oil
It is installed on the horizontal shaft to safeguard and protect the electric motor from damage as the complete purifier assembly is too heavy for a motor to take the full load from the start without overheating. Once the system attends a preset required momentum, the pads gradually move out under centrifugal force connecting the motor directly to the bowl. What do we call on this?
Friction pad
Friction block
Friction Clutch
Friction shaft
Presence of this inside the refrigeration system causes incorrect condenser and evaporator temperature differential, and system running longer than normal and difficulty to cool down room temperature.
Moisture
Fuel oil
Oil
Air
It is the removal of unwanted heat from a selected object, substance, or space and its transfer to another object, substance, or space
Compression
Condensation
Evaporation
Refrigeration
What is the process in which solid particles in a liquid are removed?
Conduction
Purification
Filtration
Separation
The cooled refrigerant is supplied to the maintenance purpose which is also used to drain out the refrigerant from the system for
Evaporator
Receiver
Expansion device
Compressor
An __________ regulates the refrigerants to maintain the correct hold or room temperature
Expansion valve
Evaporator
Compressor
Condenser
The. Unit consist of different safety and operating circuits for safe operation of the refer plant
Evaporator
Condenser
Compressor
Control
They are one of the common steering gear used on ship, they contain hydraulic cylinders attached to discs connected to the hydraulic pumps
Rotating type steering gear
Rotary vane type steering gear
Bam type steering gear
Ram type steering gear
A__________system is a group of components used for cooling and sometimes heating
Purifier
Fuel
Boiler
Refrigeration
Pumps
Lube oil
Parameters to be considered in operating a purifier, as the dirty oil entering the purifier is heated to reduce the viscosity of the oil.
Density of oll
Fuel inlet oil temperature
Throughput of oil feed
RPM of the rotating oil
Heat energy that causes change in state at constant temperature
Sensible heat
Superheat
Latent heat
Heat transfer
Different_______________ are used to control the flow of refrigerant into the hold or room.
Solenoid valve
Bypass valve
Gate valve
Relief Valve
What is the normal temperature of meat and fish room?
-18 degree celsius
-15 degree celsius
-10 degree celsius
-13 degree celsius
The use of a __________ cycle in which there is a flow of heat from one place to another.
Thermodynamic
Thermal expansion
Hydromechanic
Thermocouple
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