POWER PLANT DIESEL

Which of the following is considered an external combustion engine?

Steam boiler

Steam engine

Steam turbine

All of the above

The combustion chamber of steam boiler is commonly called as ____________.

Cylinder

Furnace

Combustion

Reactor

A Diesel engine is an example of external combustion engine.

True

False

A Gasoline engine is considered an internal combustion engine.

True

False

Main Diesel engines are making how many strokes?

Two strokes

Four strokes

Six strokes

Eight strokes

In modern ships, marine steam boilers are using which of the following fuel?

Heavy fuel oil

Diesel oil

Gasoline

Natural gas

In 4-stroke engine, which event is NOT included to complete one cycle?

Intake

Power

Compress

Exhaust

Which devise is needed to supply enough air for 4-stroke Diesel engine?

Turbocharger

Supercharger

Blower

None, it relies on natural aspiration

If the maximum rpm of our 2-stroke main diesel engine is 120, how many degrees of the crankshaft will have to produced to complete one cycle?

120 degrees

360 degrees

720 degrees

240 degrees

In order to have a combustion in marine steam boiler, which of the element is NOT necessary?

Oxygen in the air

Diesel oil

Electric spark in the burner

Carbon dioxide in the exhaust gases

If you got mistaken by pouring gasoline into the fuel tank of a Diesel engine, your engine will still be started?

True

False

In common practice on board, starting a cold steam boiler is using which type of fuel oil?

HFO

Natural gas

Gasoline

N modern ships today, which of the following type of scavenging is commonly used?

Crossflow

Loopflow

Valveless

Uniflow

Which of the following statement is correct about large marine 2-stroke diesel engines?

They are considered slow type engines.

They cannot produce enough air during suction of the piston

Compression of air is the source of heat for combustion.

They require spark plug for ignition

During combustion, which part of the piston received the expansion of gases that tends to forced the piston to moved downward?

Piston crown

The cylinder head

The crankshaft

The spark plug

Which of the following scavenging is more efficient in terms of removing all combustion products?

Loop flow

Uniflow

Crossflow

Either crossflow or uniflow

Which type of engine governor is the most simple in construction?

Mechanical

Hydraulic

Electro-hydraulic

Electronic

In what event can a chief engineer manipulate the engine governor?

Any time

Only during emergency

During dry dock

During severe storm

On board the vessel, diesel engines can be started by which of the following device?

Lead acid battery

Compressed air

Hydraulic accumulated pump

All answer are correct

Part of the amin diesel engine which seals the combustion products and the lubricating oil?

Piston skirt

Piston crown

Piston grooves

None of the answer mention

Which of the following Main Diesel Engine is electronically controlled engines/ ca?

MC engines

ME engines

Both are correct

Both are incorrect

Modern large Diesel engine during full load, the air going inside the cylinder is supplied by which means?

Turbocharger

Blower

Both are correct

Both are incorrect

In machiner space, which of the following are the main function of engine cooling system?

it removes excess heat from the engine

.it maintains the engine operating temperature where it works most efficiently.

.it brings the engine up to the right operating temperature as quickly as possible.

All of the above

During one hour notice for departure, which of the following systems must be in normal operation?

Cooling System

Fuel oil system

Lubrication system

All of the above

Reducing the friction between engine moving parts is the main function of which system?

All answers written are correct

Fuel oil system

Lubrication system

Cooling system

The exhaust port of cross flow scavenging is located partly lower than the intake port?

True

False

In large 2-stroke diesel engine, which part connects the piston and connecting rod?

Piton pin

Piston rod

Piston Crown

All of the above

In modern large ships using large 2 stroke diesel engine, blowers should be in which mode during maneuvering?

Manual

Auto

Both are correct

Both are incorrect

On board the vessel, Engine governors are used for which of the following purposes?

Regulate engine fuel consumption.

Control engine speed

Achieve high efficiency.

All of the above

On board the vessel, diesel oil and clean HFO are stored in which of the following fuel tanks?

Settling tank

Storage tank

Service tank

Double bottom tank

Which of the following Modern Marine Diesel Engine is bigger in construction with same power?

ME engine

MC engine

MV Princess

MMMA

Which of the following is NOT correct about ME engine?

Can used either diesel or fuel oil

Fuel is injected by means of cam shaft

More complex than ME engine.

It uses uniflow type of scavenging

Power Chief is commonly used by which of the following Large Marine Diesel Engine?

MC engine

ME engine

Both are correct

Both are incorrect

Which position of the piston when the timing of injection is commonly made when the piston is which position?

Bottom dead center

Before top dead center

Top dead center

None of the above

In correcting injector adjustments, which of the following is the most reliable source?

Internet

Instruction Manual

Automotive magazine

YouTube tutorial

Correct Adjustment of injection timing will result to which of the following?

Higher cylinder pressure

Lower exhaust temperature.

Increased fuel efficiency.

All of the above

For a 5 cylinder four stroke diesel engine the most common firing order is _____________.

1-2-5-3-4

1-5-2-4-3

1-3-5-4-2

1-2-4-5-3

The most common firing order of an in-line 6 cylinders 4-stroke diesel engine is __________.

1-5-3-6-2-4

1-4-3-2-6-5

1- 5-4-6-3-2

1-4-6-5-2-3

The main diesel engine is running at full rpm and the fuel meter reading at 1200 is 1453 cu.m and after 24 hrs it became 1847 cu.m. Find the daily consumption in cu.m

16.42

18.75

17.58

15.29

The indicated hp of your diesel generator is 255 hp. What is the actual power produced if the engine mechanical efficiency is 75%?

200.15 hp

187.25 hp

191.25 hp

194.35 hp

Which of the following types protection were installed in modern main propulsion?

Alarm

Slowdown and shut down

Starting interlock

All of the above

Turning gear serves as an interlock of our main diesel engine when it is engaged. Which of the following is/are correct about the interlocking of the Turning gear?

It prevents the engine from being started.

It blocks the starting air from reaching the engine.

Both statement are correct

Both statement are incorrect

Shipboard marine diesel engine parameters are the following, EXCEPT?

Specific fuel consumption

indicated mean effective pressure

Compression ratio

Engine maker

Which of the following were Engine Performance Parameters?

Power

Torque

.Specific fuel consumption

All of the above

Which device is used to determine the indicator diagram of each cylinder?

Engine indicator

Pressure indicator

Both are incorrect

Both are correct

Your main diesel engine has the following data: Ihp is 22,538 hp and Bhp is 17,212 hp. Find its mechanical efficiency.

The mechanical efficiency is 76.4%

The mechanical efficiency is 82.5%

The mechanical efficiency is 68.2%

The mechanical efficiency is 90.1%

Your diesel generator has an actual of 1,250 hp. Compute it’s equivalent in Kw.

932 kW

1,250 kW

1,500 kW

750 kW

Mean effective pressure of your main diesel engine is 120 bars. Solve for it’s equivalent in kg/cm².

122 kg/cm²

12 kg/cm²

15 kg/cm²

20 kg/cm²

Your main diesel engine has a Friction loss of 12% of Bhp. If the Bhp is 12,728 hp compute for Ihp.

14,463 hp

11,000 hp

12,000 hp

11,200 hp

Why modern 2-stroke diesel engine is better than 4-stroke diesel engine?

Less maintenance

Reliability

Efficiency

All of the above

When the above diagram is compared with the general graph, it can be seen that the compression pressure is normal and the maximum firing pressure is too high. This can be due?

Early Injection

Incorrect fuel timing of the cams

Wrong VIT setting or leaking fuel injector

All of the above

When the above diagram is compared with the general graph, it can be seen that the compression pressure is normal and the maximum firing pressure is too high.

Deficiency Type 1

Deficiency Type 2

Deficiency Type 3

Deficiency Type 4

In this diagram, it can be seen that the compression is same, but the peak pressure is too low.

Deficiency Type 1

Deficiency Type 2

Deficiency Type 3

Deficiency Type 4

In this diagram, it can be seen that the compression is same, but the peak pressure is too low. This effect can be a result of following factors

This diagram shows that the compression pressure is low, and the peak pressure is also too low.

Deficiency Type 1

Deficiency Type 2

Deficiency Type 3

Deficiency Type 4

This diagram shows that the compression pressure is low, and the peak pressure is also too low. This can be due to?

This diagram shows high compression pressure together with high peak pressure.

Deficiency Type 1

Deficiency Type 2

Deficiency Type 3

Deficiency Type 4

This diagram shows high compression pressure together with high peak pressure. This can be due?

Exhaust valve opening too late I.e. Incorrect exhaust valve timing

Overload of the engine

Both statement are correct

Both statement are incorrect

In modern ships, which of the following main diesel engine is considered cam less?

MC engines

ME engines

Both are correct

Both are incorrect

In modern 4 stroke diesel engine, which part connects the piston and crank shaft?

Cross head

Piston rod

Connecting rod

Piston pin

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