Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Marine Engineering > Basic Systems & Diesel Engines > Flashcards

Basic Systems & Diesel Engines Flashcards

1
Q

What is a System?

A

A system is a series of interconnecting pipes and components that will deliver a substance from one point to another

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Two types of System

A

Open Loop, Closed Loop

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

In which system is the working fluid consumed?

A

In an Open Loop system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

In which system is the working fluid reused?

A

With a Closed Loop System.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

An example of an Open Loop system

A

Fuel system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Example of a Closed Loop system

A

Fresh water cooling system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is a Header Tank used for?

A

To top up a tank or system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What does a service tank contain?

A

A reservoir of clean fuel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Used to collect oil returning from a system and acts as a reservoir…

A

A Drain Tank

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

3 Types of Tank Gauges

A
  • Contents gauge
  • Sounding tube
  • Gauge glass
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Contents Gauge

A

Indicates remaining liquid in a tank. Dial Type.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is a Sounding Tube?

A

Used to measure the depth of liquid inside a tank.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

How is a Gauge glass used?

A

Gives a visual indication of how much liquid is left in the tank.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Dip Tape

A

Used to measure the liquid level left in a tank.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is used to remove large, coarse particles from a system?

A

Strainers

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

5 common pipework materials?

A

Phosphor bronze, Copper, Copper Nickel, Brass, Plastic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Phosphor Bronze usage?

A

High Pressure Salt Water system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Copper usage?

A

Domestic fresh water system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Copper Nickel usage?

A

Lub Oil system

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Brass usage?

A

Used for Castings. Taps, Valve bodies, Junctions and Unions.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Plastic usage?

A

Sewage and Pre Wet.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What do seals prevent?

A

Fluid leakage

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Four seal types

A
  • Gaskets (NAF, Paper, Leather, Cork, Copper, Rubber)
  • Mechanical seals
  • Keelering couplings
  • Gland packing
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

One application of a Mechanical Seal?

A

Used for a Rotating shaft in water pump

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

One application of Keelering couplings?

A

Pipe joining for Air systems

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

When would you use Gland Packing?

A

To pack around the shaft of a pump to prevent fluid loss due to a weakened gland

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

How does a valve work?

A

It controls the flow of liquid, and is used as a means of isolating various systems.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

3 main functions of a valve

A
  1. Changes to pressure
  2. Changes to direction
  3. Shuts off supply
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

Name me 5 types of Valves

A

Globe, Gate, Flap, Saunders, Pressure Relief

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
30
Q

A valve which screws down (in the shape of a sphere)

A

Globe Valve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
31
Q

Raises and lowers, used for large ventilation pipes

A

Gate valve

32
Q

A simple non-return valve is also known as a

A

Flap Valve

33
Q

What is a Ball seated cock and how does it work?

A

Simple isolating valve. Turn the handle 90 degrees off/on.

34
Q

Protects system from over-pressurisation

A

Pressure Relief Valve

35
Q

Reduces and regulates pressure at a particular part before continuing through system.

A

Pressure Reducing Valve

36
Q

Prevents flow reversal

A

Non-return valve

37
Q

Which 4 main substances are transported through a pump?

A

Cooling, Heating, Lubrication, Fuel

38
Q

What does a Pump do?

A

In a system it forces the movement of fluid through a system using pressure

39
Q

What are the 2 main groups of Pumps?

A

Positive and Dynamic Displacement.

40
Q

Finish the sentence: A gearwheel pump is an example of a ________ ___________ pump.

A

Positive Displacement

41
Q

Centrifugal and Axial refers to what kind of pump?

A

Dynamic displacement pump

42
Q

What does flow/ pressure look like in a POSITIVE DISPLACEMENT Pump?

A

Low flow, High pressure

43
Q

What does flow/ pressure look like in a DYNAMIC DISPLACEMENT Pump?

A

High flow, Low pressure

44
Q

Bernoulli’s Theorem (classroom door theory)

A

Fluid -> impeller -> velocity increase -> slows down in larger space -> pressure increase.

45
Q

An Electrical Motor converts what into what?

A

Converts electrical energy into mechanical motion

46
Q

What drives the HPSWS?

A

Electric motor

47
Q

A Tachometer is a type of what?

A

System indicator

48
Q

5 types of System Indicators

A

Pressure and Vacuum Gauges, Tachometers, Thermometers, Flow meters, Voltage meters.

49
Q

Generally, all pressure and vacuum gauges are…

A

Bourdon tube gauges

50
Q

A gauge cock allows a gauge to…

A

be isolated from the system

51
Q

A type of system indicator whereby as pressure increases, fluid levels are forced apart. Reduction in pressure causes levels to equalise. What is it?

A

Manometer

52
Q

A Tachometer…

A

Measures the speed of a moving body or substance

53
Q

3 Types of Thermometer?

A
  1. Fixed brass (sheathed or cased)
  2. Standard Pocket/ Oblong
  3. Clock/ Dial face
54
Q

Its plug is screwed into a threaded hole in a system pipe or machine. What is it?

A

A thermometer pocket

55
Q

A standard or fixed brass thermometer is inserted into…?

A

A thermometer pocket’s recess

56
Q

What do you do when a pocket is deliberately removed from a system?

A

Isolate and tag out the equipment.

57
Q

Thermometer pockets are painted with… what?

A

Black and yellow warning stripes

58
Q

How should you house a sheathed or cased thermometer?

A

In a thermometer pocket

59
Q

The pocket is filled with transmission fluid, usually engine oil. Why?

A

To aid smoother heat energy transmission

60
Q

Voltage meter

A

Measures the potential difference in an electrical circuit

61
Q

What does a Filter do?

A

Removes fine particles from a system.

62
Q

What are the two main types of filter?

A

Metallic and Absobent

63
Q

Metallic filters are made from what? What are they for?

A

Wire wool, thin steel plates or gauze screens, and tend to filter coarser particles from a system.

64
Q

Absorbent filter are made from what?

A

Paper, cloth, felt, yarn and other fabrics.

65
Q

Fuel systems and lub oil systems require what? What type of filter is used?

A

A higher standard of cleanliness. They use absorbent filters

66
Q

What does a Pressure Control Valve do?

A

It monitors outlet pressure and opens and closes as required to maintain a constant system pressure.

67
Q

What is Rod Gearing?

A

Rod Gearing allows a valve to be shut off manually from a remote location in the event of flood or fire.

68
Q

It prevents over-pressurisation in a system. What is it?

A

A pressure relief valve

69
Q

Where is a Pressure relief valve generally found?

A

On the Outlet side of the Pump.

70
Q

Why is a thermometer screwed into oil rather than air?

A

Heat travels faster through liquid, resulting in a faster, more accurate reading.

71
Q

Why must we use the correct oils for their set purposes?

A

Each are manufactured for a certain job to avoid damage to components.

72
Q

What does an Accumulator do?

A

Stores energy and smooths out pulsation. They can be used as a surge/pulsation dampener/ absorber.

73
Q

2 purposes of an Accumulator?

A

It stores substance pressure and is a pulsation pressure dampener.

74
Q

Most common type Accumulator?

A

Hydro-Pneumatic

75
Q

2 Main Accumulator types?

A

Bag and Piston

76
Q

It stores enough energy to safely start up or finish an operation in the event of pump stoppage. What is it?

A

An Accumulator

77
Q

What is the difference between a Dynamic and Positive Displacement pump?

A

D Pumps maintain a steady flow of the fluid areas, whereas P Displacement pumps contain portions of fed fluid that are enclosed before being moved along.

Marine Engineering (8 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions