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Marine Boilers advance quiz

Total questions: 93

Worksheet time: 2hrs 4mins

Name
Class
Date
1.

Boilers are required for ______ type of vessels.

a)

all

b)

cargo

c)

passenger

d)

fishing

2.

For motor vessels, boilers are required to supply steam mainly for heating and auxiliary purposes. What is the name of this type of boiler?

a)

Main Boiler

b)

Aux Boiler

c)

Diesel Boiler

d)

Steam Boiler

3.

For steam vessels, boilers are required mainly for propulsion plant, heating and auxiliary purposes. What is the name of this type of boiler?

a)

Main Boiler

b)

Aux Boiler

c)

Diesel Boiler

d)

Steam Boiler

4.

In modern diesel vessels, steam is available at sea through ______ by utilising diesel engine exhaust.

a)

exhaust gas economiser

b)

turbocharger

c)

air cooler

d)

fuel injector

5.

Explain the types of boilers.

4 lines
6.

Describe the construction of a fire, water, and double evaporation boilers.

4 lines
7.

List all boiler mountings.

4 lines
8.

Explain joining of lengths of steam pipes supporting of steam pipes as well as the importance of allowing for expansion & contraction in steam pipes.

4 lines
9.

Describe super heaters, economizers, air & steam pre-heater, at temperatures & de-super heaters.

4 lines
10.

Describe the correct procedure of raising steam boilers and coupling them to the steam system.

4 lines
11.

Explain steam production by combustion of fuel oil, engine exhaust gas, and composite fired boiler.

4 lines
12.

Describe the checks and controls during operation and safety devices on boilers.

4 lines
13.

State the uses of steam on board ship.

4 lines
14.

Explain how the steam supply is provided on a motor vessel while in port and at sea.

4 lines
15.

State the advantages of a water-tube boiler as compared to fire-tube type.

4 lines
16.

With a suitable sketch of a boiler label four important boiler mountings and state the function of each mounting.

4 lines
17.

With reference to boiler water chemistry, state the purpose of water treatment.

4 lines
18.

List the steps to raise steam in a boiler which has been shut down.

4 lines
19.

State the function of nozzles with reference to steam turbine plant.

4 lines
20.

State the function of vacuum condenser with reference to steam turbine plant.

4 lines
21.

State the function of astern turbine with reference to steam turbine plant.

4 lines
22.

State the function of reduction gearing with reference to steam turbine plant.

4 lines
23.

State the function of cascade tank with reference to steam turbine plant.

4 lines
24.

State the function of compounding in turbines with reference to steam turbine plant.

4 lines
25.

Explain the need of steam on a motor vessel.

4 lines
26.

Describe the classification of boilers used in marine applications.

4 lines
27.

What are Fire tube boilers?

4 lines
28.

What are Water tube boilers (Drum type)?

4 lines
29.

Compare Fire tube boilers and Water tube boilers.

4 lines
30.

Explain waste heat recovery in motor ships by composite boiler.

4 lines
31.

What are boiler mountings and why are they important?

4 lines
32.

Discuss boiler water chemistry and its importance.

4 lines
33.

What is one purpose of steam on motor vessels related to heating? Steam is used for ________ on motor vessels.

a)

M/E FW and fuel oil heater, Cargo heating, oil tank heating, Accommodation heating for Air con plant, Calorifier

b)

Propeller lubrication

c)

Navigation system operation

d)

Radio communication

34.

Which of the following is NOT a purpose of steam on motor vessels?

a)

Turbo-generators

b)

Cargo pumps

c)

FWG heating medium

d)

Navigation lights

35.

Name any two purposes of steam on motor vessels.

4 lines
36.

Steam is used for tank washing in tankers on motor vessels.

a)

True

b)

False

37.

What is the main function of the Master Boiler in the steam plant system?

4 lines
38.

Refer to the diagram of the Steam Plant Layout on Motor Ship. Which component is responsible for converting steam energy into mechanical energy to drive the propeller?

a)

Master Boiler

b)

Turbine

c)

Diesel Engine

d)

Feed Water Tank

39.

Refer to the diagram of the Steam Plant Layout on Motor Ship. The Feed Water Tank is labeled as component number _____

a)

6

b)

2

c)

4

d)

9

40.

The Slave Boiler is used as a backup to the Master Boiler.

a)

True

b)

False

41.

Refer to the diagram of the Steam Plant Layout on Motor Ship. Which labeled section represents the heat exchanger area?

a)

A

b)

B

c)

C

42.

One type of boiler classification is ________ Tube/Fire Tube.

a)

Smoke Tube/Fire Tube

b)

Water Tube/Steam Tube

c)

Gas Tube/Heat Tube

d)

Oil Tube/Pressure Tube

43.

Which of the following is a type of boiler classification?

a)

Water Tube

b)

Steam Tube

c)

Oil Tube

d)

Gas Tube

44.

What is the function of the 'Smoke stack' in the boiler?

a)

To release steam

b)

To remove exhaust gases

c)

To heat water

d)

To store fuel

45.

Refer to the diagram of the Tank type Smoke Tube Boiler. The part labeled 'Steam out' is used to release _______.

a)

steam

b)

water

c)

ash

d)

oil

46.

Refer to the diagram of the Tank type Smoke Tube Boiler. Briefly explain how the smoke tube boiler works based on the diagram.

4 lines
47.

Which type of boiler is described as having hot flue gases from the furnace pass through the fire-tube banks?

a)

Fire tube boiler

b)

Water tube boiler

c)

Electric boiler

d)

Waste heat boiler

48.

In a fire tube boiler, where are the tubes immersed?

a)

In water contained in the boiler shell

b)

In steam above the water level

c)

In the furnace chamber

d)

In the air outside the boiler

49.

What process takes place across fire-tubes in a fire tube boiler?

a)

Water is cooled

b)

Heat transfer from flue gases to water

c)

Steam is condensed

d)

Air is filtered

50.

The main purpose of a fire tube boiler is to produce _______.

a)

steam

b)

electricity

c)

hot air

d)

compressed air

51.

Identify the type of boiler shown in the diagram.

a)

Water tube boiler

b)

Fire tube boiler

c)

Electric boiler

d)

Steam generator

52.

In fire tube boilers, hot flue gases from _______ pass through the fire-tube banks.

a)

furnace

b)

chimney

c)

economizer

d)

superheater

53.

In fire tube boilers, tubes are immersed in _______ contained in the boiler shell.

a)

water

b)

steam

c)

oil

d)

air

54.

In fire tube boilers, heat transfer takes place across fire-tubes, from flue gases to _______.

a)

water

b)

steam

c)

air

d)

metal

55.

What is produced in fire tube boilers as a result of heat transfer from flue gases to water?

a)

Steam

b)

Ash

c)

Smoke

d)

Hot air

56.

Refer to the diagram of the Cochran spheroid boiler. Which part is responsible for containing the water in the boiler?

a)

Tubes

b)

Boiler shell

c)

Furnace

d)

Oil burning assembly

57.

Identify the part labeled 'steam outlet' in the Water Tube Boiler diagram.

a)

steam outlet

b)

water inlet

c)

furnace

d)

mud drum

58.

Which part of the Water Tube Boiler is responsible for allowing water to enter the system?

a)

water inlet

b)

steam outlet

c)

furnace

d)

superheater

59.

What is the function of the combustion chamber in a Water Tube Boiler?

a)

To store steam

b)

To burn fuel and generate heat

c)

To allow water to enter

d)

To release flue gases

60.

Which heat transfer mechanism in a boiler system is represented by label 1 in the diagram?

a)

Radiant Heat from Hot Flame

b)

Heat Conduction across tube wall

c)

Convection flow of liquid where hotter portion will rise and cooler portion fall

61.

In a boiler heat transfer system, ________ occurs where the hotter portion of liquid will rise and the cooler portion will fall.

a)

Convection flow of liquid

b)

Radiation transfer of heat

c)

Conduction through solids

d)

Evaporation of water

62.

What is the main function of the Boiler in this system?

a)

The Boiler generates steam by heating water.

b)

The Boiler cools down the steam to water.

c)

The Boiler stores the steam for later use.

d)

The Boiler filters impurities from water.

63.

Refer to the diagram of the Open Feed System – General Layout. Which component is responsible for returning condensate to the system?

a)

Condensate return header

b)

Feedwater heater

c)

Deaerator

d)

Boiler drum

64.

What is the purpose of the Feed Pumps?

a)

Feed Pumps are used to pump feed water into the boiler.

b)

Feed Pumps are used to cool down the steam.

c)

Feed Pumps are used to generate electricity directly.

d)

Feed Pumps are used to remove ash from the boiler.

65.

Refer to the diagram of the Open Feed System – General Layout. Which tank is used to observe the water level and quality before it enters the cascade tank?

a)

Observation Tank

b)

Hot Well

c)

Deaerator Tank

d)

Storage Tank

66.

Refer to the diagram of the Open Feed System – General Layout. Which component is labeled as 'FWG'?

a)

FWG stands for Fresh Water Generator.

b)

FWG stands for Fuel Water Gauge.

c)

FWG stands for Feed Water Grid.

d)

FWG stands for Flow Water Gate.

67.

What is the function of the Main steam stop valve?

a)

The Main steam stop valve controls the flow of steam from the boiler to the steam distribution header.

b)

It regulates the temperature of the steam in the boiler.

c)

It measures the pressure of the steam in the system.

d)

It removes impurities from the steam before distribution.

68.

The Cascade Tank is used for heating the feed water before it enters the boiler.

a)

True

b)

False

69.

Refer to the diagram of the Open Feed System – General Layout. Which component is responsible for removing oil from the system?

a)

Oil drain

b)

Feed pump

c)

Heater

d)

Deaerator

70.

What does EGE stand for in the diagram?

a)

EGE stands for Exhaust Gas Economizer.

b)

EGE stands for Electric Gas Engine.

c)

EGE stands for Emergency Generator Equipment.

d)

EGE stands for Engine Gas Evaporator.

71.

What type of boiler is shown in the diagram?

a)

Fire Tube Boiler

b)

Water Tube Boiler

c)

Electric Boiler

d)

Steam Boiler

72.

In a Water Tube Boiler, water flows through the ______ and is heated by external combustion gases.

a)

tubes

b)

chamber

c)

furnace

d)

shell

73.

Which type of boiler has hot flue gases from the furnace passing around the tubes?

a)

Fire tube boiler

b)

Water tube boiler

c)

Electric boiler

d)

Steam generator

74.

In water tube boilers, water circulates through the _____

a)

tubes

b)

furnace

c)

chimney

d)

drum

75.

Heat transfer in water tube boilers takes place across firetubes, from flue gases to _____

a)

water

b)

air

c)

steam

d)

oil

76.

Water tube boilers are used for higher pressure and temperature steam generation.

a)

True

b)

False

77.

What is the efficiency of water tube boilers?

a)

Less than 50%

b)

About 60%

c)

Over 85%

d)

100%

78.

Which of the following is NOT a characteristic of water tube boilers?

a)

Capable of very high output

b)

Steam can be raised quickly from cold condition

c)

Heavy and bulky

d)

Compact and light weight

79.

In the diagram, the _____ supplies oil fuel to burners.

a)

Supply of oil fuel

b)

Water tank

c)

Air compressor

d)

Steam generator

80.

The saving in weight for Water Tube Boilers compared to Smoke Tube Boilers is about ____ with the same heating area.

a)

3:1

b)

1:1

c)

5:1

d)

10:1

81.

What is the efficiency of Water Tube Boilers that leads to reduced fuel consumption?

a)

Over 85%

b)

Over 50%

c)

Over 70%

d)

Over 95%

82.

Water Tube Boilers can produce steam at high _______ and _______.

a)

pressures and temperature

b)

voltage and current

c)

speed and velocity

d)

density and viscosity

83.

Water Tube Boilers are capable of very high output (high evaporative rate).

a)

True

b)

False

84.

Water Tube Boilers are _______ and _______ compared to smoke tube boilers of the same capacity.

a)

compact and light weight

b)

bulky and heavy

c)

less efficient and costly

d)

difficult to maintain and operate

85.

High temperature and pressure in Water Tube Boilers make them suitable for _______ operation.

a)

steam turbine

b)

domestic heating

c)

hot water supply

d)

low pressure steam

86.

Steam can be raised rapidly in Water Tube Boilers in comparison to Smoke Tube Boilers because of positive water circulation.

a)

True

b)

False

87.

One advantage of Water Tube Boilers is a wider safety margin in the event of explosion due to a ______ amount of water.

a)

smaller

b)

larger

c)

constant

d)

variable

88.

Water Tube Boilers help in ______ space.

a)

saving

b)

wasting

c)

heating

d)

cooling

89.

Water Tube Boilers experience less ______ stress.

a)

thermal

b)

mechanical

c)

chemical

d)

electrical

90.

Which type of boiler has the largest heat transfer surface in the boiler furnace where combustion takes place?

a)

Fire-Tube Boilers

b)

Water-Tube Boilers

c)

Both

d)

None

91.

What is the steam pressure typically less than in Fire-Tube Boilers? Steam pressure < ___ bar.

a)

20

b)

50

c)

100

d)

200

92.

Which type of boiler is not recommended to operate steam turbines except onboard few ships with turbines designed to run on saturated steam?

a)

Fire-Tube Boilers

b)

Water-Tube Boilers

c)

Both

d)

None

93.

Which type of boiler has higher operating efficiency?

a)

Fire-Tube Boilers

b)

Water-Tube Boilers

c)

Both

d)

None

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