問題一覧
1
Which term describes a rotational force?
torque
2
What is the unit of measurement for power?
watts
3
What does calorific value measure?
Energy content of fuel
4
Which principle does a two-stroke diesel engine follow?
) Compression-ignition
5
What is the purpose of the turbocharging system in a two-stroke diesel engine?
*b) To improve combustion efficiency
6
What are the main components of a two-stroke diesel engine?
b) Cylinder block, piston, connecting rod, and crankshaft
7
Which of the following is a common application of two-stroke diesel engines?
Propelling small boats and ships
8
What is the purpose of the intake stroke in a two-stroke diesel engine?
To allow air to enter the cylinder for the next cycle
9
What is the main principle behind the operation of a diesel engine?
*a) Fuel injection and combustion
10
What is the main principle behind electric propulsion onboard a ship?
Conversion of electrical energy into mechanical thrust.
11
Which type of electric propulsion system combines electric propulsion with traditional engines?
Hybrid Propulsion
12
What is the purpose of the cooling systems in an electric propulsion system?
To maintain optimal operating temperatures for electric motors and power electronics
13
Which component of a mooring winch is responsible for rotating the drum and controlling the movement of mooring lines?
) Motor
14
What is the purpose of the clutch and brake mechanisms in a mooring winch? a) *b) c) d)
To hold the mooring lines securely in place
15
During the operation of a mooring winch, what is the first step after the mooring lines are properly attached to the ship's mooring points?
Applying the brake
16
What is the purpose of the brake mechanism in an anchor windlass?
To control the movement of the anchor chain/rope
17
How is the anchor chain/rope handled by the anchor windlass?
It passes through the windlass and is pulled in or paid out
18
What controls the operation of an anchor windlass?
Electric switches or hydraulic controls
19
What is the primary function of an anchor windlass?
To raise or lower the ship's anchor
20
Which component of a winch is responsible for handling and controlling the tension in a cable or rope?
Drum or spool
21
What is the typical power source for operating a winch?
Electric motor or hydraulic system
22
Which driving mechanism used in deck machinery is known for its high power output and compact design?
Hydraulic drive
23
What are some advantages of using electric drive mechanisms in deck machinery?
Precise control and variable speed options
24
What is the primary purpose of an emergency generator onboard a ship?
To supply power to critical systems during a power failure
25
What is the fuel commonly used to power emergency generators on ships?
Diesel
26
What is the typical source of power for an emergency switchboard?
Emergency generator
27
What are some safety features incorporated into emergency generators?
Overload protection and over-speed protection
28
What is the purpose of an automatic start feature in an emergency generator?
To provide a smooth transition during a power failure
29
What is the role of circuit breakers in an emergency switchboard?
To protect the connected circuits from overcurrent and short circuits
30
Which type of pump is commonly used in firefighting systems onboard ships?
Centrifugal pump
31
What is the main principle of operation for centrifugal pumps?
Centrifugal force
32
Which pump type is known for its high-pressure capabilities?
Reciprocating pump
33
What is the purpose of the bilge system onboard a ship?
To remove water from lower compartments
34
What is the main function of a ballast water management system (BWMS)?
To treat ballast water before discharge
35
Which type of pump is commonly used in lubrication systems onboard ships?
Rotary pump
36
What are the primary applications of screw pumps onboard ships?
Fuel oil transfer and lubrication systems
37
What is the primary purpose of a bilge pump onboard a ship?
To remove water from lower compartments
38
Which type of pump is suitable for high-pressure water applications onboard ships?
Reciprocating pump
39
What is the purpose of a ballast water management system (BWMS) onboard a ship?
To treat ballast water before discharge
40
Why are centrifugal pumps commonly used in maritime applications?
They provide high flow rates and moderate pressure
41
What is the primary advantage of reciprocating pumps over other pump types?
They are suitable for transferring high-viscosity fluids
42
Which pump type is commonly used for fuel oil transfer systems onboard ships?
Screw pump
43
How do bilge pumps contribute to the safe operation of a ship?
They maintain stability and prevent flooding
44
What is the purpose of the ballast water management system (BWMS) onboard a ship?
To treat ballast water before discharge
45
A ship's bilge pump is not operating properly, and water is accumulating in the lower compartments. What is the immediate action to be taken? a) b) *c) d)
Conduct an inspection of the bilge pump
46
In an emergency situation, the ship's emergency generator fails to start. What is the next step?
Troubleshoot the emergency generator
47
A ship's rotary pump is overheating during operation. What could be the possible cause?
Insufficient lubrication
48
During a routine inspection, a reciprocating pump is found to have a leaking piston seal. What action should be taken?
Replace the piston seal
49
. A ship's centrifugal pump is installed in a location with limited space. What advantage does the centrifugal pump offer in this situation?
Simple maintenance requirements
50
During cargo operations, which deck equipment is commonly used for lifting and moving heavy loads?
Cranes
51
In a pumping system, which component is responsible for regulating the flow rate of fluid?
Valves
52
What is the purpose of mooring and anchoring during deck operations?
To secure the ship to the dock
53
Which type of pump is commonly used for transferring fuel oil ?
Screw
54
What is the primary function of control systems in a pumping system?
To regulate flow rates
55
What are the potential risks associated with deck operations?
Improper mooring procedures
56
How does the type of cargo influence the design of a pumping system onboard a ship?
It determines the type of pumps used
57
Why is it important to conduct regular maintenance of deck equipment?
To ensure proper functioning and prevent breakdowns
58
What is the purpose of monitoring navigational equipment during deck operations?
To maintain the ship's course and speed
59
How can a pumping system contribute to the safety of a ship?
By maintaining proper ballast levels
60
How does the type of cargo influence the design of a pumping system onboard a ship?
It determines the type of pumps used