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REROOMING NANAMAN?!?

THESE ARE MARINE BOILERS WHICH ARE ESSENTIAL COMPONENTS OF SHIP PROPULSION SYSTEM THAT THEY PROVIDE HIGH PRESSURE STEAM FOR POWER GENERATION HEATING VARIOUS ONBOARD PROCESSES, WHAT THIS IS TYPE OF MARINE BOILER?

Steam Turbine

Fire Tube Boiler

Water Tube Boiler

Turbocharger

T IS A TYPE OF MARINE BOILER USED IN SHIPS AND MARINE VESSELS IT IS DESIGNED TO GENERATE STEAMS BY TRANSFERRING HEAT THROUGH TUBES IN A SHELL?

Turbocharger

Fire Tube Boiler

Steam Turbine

Water Tube Boiler

WHY A BOILER MANHOLE IS OVAL OR EGG SHAPE?

Because of the cross section of the most men are elliptical and smaller opening and less force acting upon it

Because oval or egg shape provides better heat distribution

To reduce the risk of pressure buildup in the boiler

It allows for easier installation and maintenance

BOILER IS COMMONLY USED TO PROVIDE A SOURCE OF STEAM FOR SHIPS MAIN STEAM TURBINE ENGINE, WHAT FACTS THAT WILL SHOW A PERFECT REQUIREMENT OF A GOOD STEAM BOILER?

It has a constant and thorough circulation of water

The boiler has a high level of rust and corrosion.

The boiler has a limited capacity to generate steam.

The boiler requires frequent maintenance and repairs.

EXCESSIVE CARRY OVER IN BOILERS OPEN ENCOUNTER IN THIS CONDITION IN TO STEAM TURBINE BLADES FAILURE, WHAT DOES BOILER CARRY OVER MEANS?

It is the contamination of steam with water solids and pass it out to meet the steam

The process of transferring excess steam from the boiler to the turbine blades

A condition where the boiler releases excessive pressure into the steam turbine blades, causing failure

The act of carrying over excess fuel from the boiler into the steam turbine blades, leading to failure

WHAT HAPPENS TO THE LEVEL OF BOILER WATER WITH IT HEATS UP?

Increase

The level of boiler water decreases

The level of boiler water remains the same

The level of boiler water fluctuates

WHY IS IT IMPORTANT THAT THE BOILER MUST BE FIRED SLOWLY EVERY AFTER OVERHAUL

TO PREVENT THERMAL STRESS OR CRACK

TO PREVENT OVERHEATING

TO PREVENT MISFIRE

TO AVOID EXPLOSION

WHY IS IT IMPORTANT THAT THE BOILER BE PRUGE DURING START UP?

TO AVOID BACKFIRE OR EXPLOSION

TO PREVENT OVERHEAT

TO PREVENT LOCAL THERMAL STRESS

TO AVOID TOO MUCH FUEL CONSUMPTION

SAFETY VALVES PREVENT BOILER FROM STEAM OVER PRESSURE, HOW EVER SAFETY MUST BE CAPABLE TO?

REMAIN OPEN UNTIL THE PRESET PRESSURE DROPS OCCURS AND CLOSES AUTOMATICALLY

CLOSING WITH A CHATTERING MOTION

OPENING GRADUALLY

REMAIN OPEN AND CLOSES MANUALLY

HAMMERING IS THE RESULT OF CONDENSATE THAT BEING REMOVE FROM A LONG RUN OF A STEAM PIPELINE, WHAT ABOUT THE PRIMING, WHAT WILL BE THE EFFECT TO THE SYSTEM?

A condition where a sudden reduction of steam pressure caused by a large sudden load

Is a high concentration of solids in the boiler water

Increased with increases in alkalinity and solid content

Any vapor containment that settle in the steam pipings

WHAT IS THE PURPOSE OF A DEAERATOR ON THE STEAM BOILER?

TO CONTROL THE COMBUSTION AIR FLOW

TO REMOVE AIR AND OTHER GASSES FROM THE FEED WATER

TO CONTROL THE FEED WATER PUMP

TO MAINTAIN ITS VACUUM

WHY DO WE NEED TO REDUCE THE PRESSURE OF STEAM FOR CONSUMER USER?

BECAUSE OF THE EQUIPMENT'S MAWP (MAX. ALLOWABLE WORKING PRESS.)

PREVENT PITTING AND CORROSION IN PIPING

PREVENT HAMMERING

PREVENT EXPLOSION ALONG THE PIPE

THEY ARE INSTALLED IN BOILER DRUM TO ELIMINATE THE AIR WHEN FILLING WATER IN THE BOILER OR DURING RAISING OF THE STEAM, WHAT DO YOU CALL ON THIS?

SDNR

Purge Valve

Check Valve

Feed Valve

WHAT DO WE CALL ON THIS PART OF EXHAUST GAS BOILER WHICH REMOVE THE CARBON BUILD UP CLINGING ON THE OUTSIDE OF THE TUBES?

Soot Blower

Igniter

Burner

Sprayer

HOW DO WE ELIMINATE DISSOLVE OXYGEN CARBON DIOXIDE IN THE FEED WATER OF A BOILER?

Clarifier

Air Separator

Condenser

Purifier

HOW DO WE REMOVE SLUDGE DEPOSIT INSIDE THE BOILER?

BLOWDOWN

WATER ANALYSIS

FOAMING

PURGING

YOU’RE UNDERSTANDING ON HOW TO REMOVE SUSPENDED SOLIDS FROM THE SURFACE OF THE WATER?

The surface blow-off pipe in the scam valve is to be used

Open both bottom blowdown and surface blowdown at the same time

Bottom blowdown valve to be used

Bottom blowdown technique procedure to follow

IN A STEAM BOILER IF THE WATER DRUM IS LOCATED AT THE BOTTOM OF THE BOILER AND ACT AS THE LOWER RESERVOIR OF WATER, WHAT ELSE IS THE PURPOSE OF THE WATER DRUM?

Serve as collecting point for sludge

To provide a platform for workers to stand on

To store extra fuel for the boiler

To act as a soundproofing device for the boiler

BOILER WATER DRUM IS AT THE PART OF THE LOWER PART, AND THE STEAM DRUM IS AT THE TOP OF THE BOILER?

IT GENERATED STEAM COLLECTED AND SEPARATED FROM THE WATER

IT COLLECTS COLD WATER AND PRE-HEAT

IT PREHEATS THE FEED WATER SUPPLY

MAIN GENERATING BANK OF STEAM

REDUCING THE DISSOLVE GASSES IN THE BOILER DRUM IMPROVES BOILER EFFICIENCY, I A BOILER MOUNTINGS WHAT IS THE PURPOSE OF THE AIR VENT?

Evacuate air and dissolve gasses from the drum

To release excess pressure from the drum

To control the temperature inside the drum

To prevent corrosion in the boiler drum

.CAN YOU INFER WHY BOILER HAVE A CHECK VALVE INSTALLED IN A FEED WATER INLET IN A BOILER FRONT?

IT PREVENTS THE BACKFLOW WHEN FEED PUMP STOP

PREVENTS HIGH TEMPERATURE FROM ESCAPING THE STEAM DRUM

SO THAT WATER CAN BE REGULATED

PERMITS ONE DIRECTION OF FEED WATER

WHY SHALL THE COMBUSTION OF AIR BLOWER MAY RUNNING FOR A WHILE AFTER YOU HAVE CLOSE THE OIL TO THE BURNERS?

To remove all gasses from the furnace

To prevent overheating of the blower motor

To allow for proper ventilation of the combustion chamber

To ensure complete combustion of any remaining fuel particles

IN WHAT TUBE IN A WATER TUBE BOILER SLUDGE IS MOST LIKELY TO COLLECT IN?

Downcomer Tube

Fire tube

Steam drum

Economizer tube

WHAT IS THE PURPOSE OF THE DEARAETOR IN A BOILER FEED WATER SYSTEM?

Removal which is oxygen in a feed water

To increase the temperature of the feed water

To remove impurities from the feed water

To regulate the pressure in the boiler feed water system

AFTER CLOSING THE DRAIN, DURING BLOWING PROCEDURE FOR A GLASS WATER GAUGE, THE WATER COCK IS OPEN AND THE VALVE AND THE WATER FLOWS AT THE TOP OF THE GLASS THEN THE STEAM COCK IS OPEN AND THE WATER FLOWS DOWN AND OUT OF THE GLASS, WHICH STATEMENT IS THE CORRECT?

The water level is between the water cock connection of the boiler at the bottom of the gauge glass safe to put feed water in to the boiler

The water level is too high and the boiler is at risk of overflowing.

The water level is too low and the boiler is at risk of running dry.

The blowing procedure is not necessary and can be skipped.

.WHAT IDEA JUSTIFY THE VARYING OF NUMBER DROPLETS OF WATER IN THE STEAM?

Evidence found that presence of contaminants increased solid contents that leaves the boiler with the steam

The varying number of water droplets in the steam is justified by the temperature of the water.

The varying number of water droplets in the steam is justified by the pressure inside the boiler.

The varying number of water droplets in the steam is justified by the size of the boiler.

WHAT IS SOMETHING WORTH KNOWING THAT ENGINEERS KNOWS AND OTHERS DON’T KNOW REGARDING ON THE DISTRIBUTION OF STEAM PRESSURE?

Pressure losses is due to friction resistance and condensation within the pipe work

Pressure losses are caused by the presence of air bubbles in the steam

The distribution of steam pressure is affected by the alignment of the planets

Steam pressure can be increased by adding more water to the system

THE USE OF PRESSURE REDUCING VALVE IS THE COMMON METHOD IN REDUCING STEAM PRESSURE IN A TYPICAL STATION WHY IS SEPARATOR INSTALLED UPSTREAM ALONG THE REDUCING VALVE?

Remove drain water in wet steam

To increase the steam pressure before it reaches the reducing valve.

To prevent the steam from entering the reducing valve and causing damage.

To regulate the flow of steam after it passes through the reducing valve.

WHEN YOU DRAIN OUT UNCLEAR THE LINES WATER YOU PREVENT WATER HAMMERING, CAN WATER HAMMERING DANGEROUS?

Potential danger for pipe damage and personal injury

Water hammering is a myth, it doesn't actually exist

Water hammering only occurs in old plumbing systems, so it's not a concern

Water hammering can actually improve the water flow in your pipes

. IN A AUXILLARY STEAM BOILER, WHAT SPECIFIC PLACE SHOULD STEAM TRAPS SHOULD BE INSTALLED?

It should be below the lowest condensate discharge of the equipment

Above the highest condensate discharge of the equipment

Inside the combustion chamber

At the point where steam is generated

IT IS THE MOTION OF THE WORKING FLUID IN THE EVAPORATING TUBE OF A BOILER, WHAT IS THIS MOTION THAT AFFECT BY HEAD OR PRESSURE DIFFERENCE IN THE WORKING FLUID BETWEEN DOWN COMER OR RISER TUBE?

Circulation Motion

Linear Motion

Rotational Motion

Oscillatory Motion

HOW NATURAL CIRCULATION IN A BOILER BE ACCOMPLISHED?

THE NATURAL CONVECTION CURRENT IS INDUCED TO WATER DUE TO DIFFERENCE DENSITY

HE NATURAL CONVECTION CURRENT IS INDUCED TO WATER DUE TO DIFFERENCE IN PRESSURE

HE NATURAL CONVECTION CURRENT IS INDUCED TO WATER DUE TO DIFFERENCE CHEMICAL DOSAGE

HE NATURAL CONVECTION CURRENT IS INDUCED TO WATER DUE TO DIFFERENCE VISCOSITY

THE FOLLOWING CASES ARE THE CAUSES OF WATER LEVEL FAILURE OUT OF SIGHT OF A WATER GAUGE EXCEPT ONE?

Condenser failure

Pump malfunction

Pipe blockage

Valve leakage

WHAT ARE THE EFFECT OF AN AIR LEAKAGE IN THE CONDENSER?

Result in increase back pressure or turbine thermal efficiency will drop

The condenser will become more efficient

There will be a decrease in the overall system pressure

The air leakage will have no effect on the condenser

.HOW A TURBO GENERATOR OVER SPEED TRIP IS BEING TESTED?

At no load increase rpm by speed adjuster will trip at 115% of normal speed

The turbo generator over speed trip is tested by increasing the load gradually until it reaches 150% of normal load, at which point it will trip.

To test the turbo generator over speed trip, the speed adjuster is set to decrease the rpm by 10% of normal speed, and if it trips at this reduced speed, it is considered functioning properly.

During the testing of the turbo generator over speed trip, the speed adjuster is bypassed and the rpm is manually increased by 50%, and if it trips at this higher speed, it is deemed to be working correctly.

.PRIOR DEPARTURE WARMING UP IS DONE IN A STEAM TURBINE, HOW DO YOU CREATE A VACUUM IN A CONDENSER?

Start steam jet ejector does evacuating air in the condenser

Using a vacuum cleaner to suck out the air from the condenser

Installing a large fan to blow out the air from the condenser

Injecting helium gas into the condenser to create a vacuum

THE BRIDGE GIVE YOU 2 HOURS NOTICE PRIOR ARRIVAL; WHAT ARRIVAL PROCEDURE MUST EXECUTED FIRST?

All the fall away procedure done in reverse order

Notify the captain of the bridge

Prepare the gangway for disembarkation

Check the ship's position on the navigational chart

IN THROTTLE THERE WERE NAME CONSEQUENTLY WITH THEY INCREASE CENTRIFUGAL FORCE THE BALLS FLIES APART AS A PART CAN BE EXPLAIN, WHAT WILL HAPPEN NEXT?

Axial movement of sleave and followed activation of lever and it turns the activatist of main valve to partially close

The balls will collide with each other and form a solid mass

The centrifugal force will cause the balls to disintegrate into smaller pieces

The throttle will malfunction and cause the balls to explode

THERE IS ALWAYS SOME STEAM LEFT IN THE CLEARANCE SPACE FROM THE PREVIOUS STROKE THIS STEAM LEFT IN THE CLEARANCE SPACE IS CALLED?

Cushion Steam

Residual Vapor

Remnant Steam

Excess Condensation

AN IMPULSE TURBINE STEAM EXPAND?

Only in the nozzle

The steam expands in the turbine blades.

The steam expands in the condenser.

The steam expands in the boiler.

Is a type of steam turbine where the rotor derives its rotational force from the impact force, or the direct push of steam on the blades.

Impulse turbine

Reaction turbine

Condensing turbine

Back pressure turbine

A type of steam turbine that works on the principle that the rotor spins, as the name suggests, from a reaction force rather than an impact or impulse force.

Impulse turbine

Reaction turbine

Steam turbine

Impact turbine

Name from the fact that steam is extracted at an intermediate point in the turbine casing, at a positive pressure.

Extraction turbines

Reaction turbines

Intermediate pressure turbines

Impulse turbines

Casing extraction turbines

A machine that extracts thermal energy from pressurized steam and uses it to do mechanical work on a rotating output shaft. Its modern manifestation was invented by Charles Parsons in 1884

Steam turbine

Boiler

Heat exchanger

Condenser

If the turbine wheel is driven by the kinetic energy of the fluid that strikes the turbine blades through the nozzle or otherwise, the turbine is known as

Impulse turbine

Reaction turbine

Rotary turbine

Fluid-driven turbine

Pelton, Turgo, and Cross-flow turbines are three types of?

Impulse turbine

Reaction turbine

Hydraulic turbine

Wind turbine

A modified type of impulse turbines that is classified as an impulse turbine due to the rotation of the runner at atmospheric pressure and not as a submerged turbine.

Cross-flow turbine

Kaplan turbine

Francis turbine

Pelton turbine

If the sum of potential energy and kinetic energy of water which are due to the pressure and velocity, respectively cause the turbine blades to rotate, the turbine is classified as

Reaction turbine

Impulse turbine

Axial flow turbine

Radial flow turbine

In these types of turbines, the entire turbine is immersed in water and changes in water pressure along with the kinetic energy of the water cause power exchange.

Reaction turbine

Impulse turbine

Tangential or peripheral turbines

Mixed flow turbines

All of the choices are types of reaction turbine, except?

Pelton

Francis

Kaplan

Deriaz

If the flow in the runner moves radially, the turbine is

Radial flow turbine

Axial flow turbine

Mixed flow turbine

All of the above

In these turbines, water enters the turbine casing through the Penstock, and travels through the fixed guide vanes to the rotor, and exits from there.

Inward radial flow turbine

Outward radial flow turbine

Left face radial flow turbine

Right face radial flow turbine

In these turbines, water flows in a tangential direction to the runner. Pelton belongs to this category of turbines.

Tangential flow turbine

Axial flow turbine

Mixed flow turbine

Radial flow turbine

In this type of turbine, the fluid flows parallel to the turbine shaft (turbine axis). Kaplan is one of these turbines.

Axial flow turbine

Mixed flow turbine

Radial flow turbine

Tangential turbine

A turbine in which the flow enters the turbine radially and leaves it axially is a mixed flow turbine, like modern Francis turbines.

Mixed flow turbine

Radial flow turbine

Tangential flow turbine

Axial flow turbine

Hydraulic turbines operating in the head range of fewer than 45 meters are considered

Low head turbines

Medium head turbine

High head turbine

Low low head turbine

Turbines with heads higher than 250 meters are known as

Medium head turbine

High head turbine

Low low head turbine

Low head turbine

He working range for heads of 45 to 250 meters is known as

Low head turbine

Low low head turbine

High head turbine

Medium head turbine

Defined as the speed of a turbine with a geometric similarity that can generate a unit of power under a head unit.

Specific speed

Specific heat

Critical speed

None of the above

The values between 1 and 10 are low specific speeds. Impulse turbines operate in this range.

Medium specific speed turbine

Low specific speed turbine

High specific speed turbine

Low low specific speed turbine

Turbines that operate in the specific speed range of 10 to 100, such as Francis, have a

Low low specific speed turbine

High specific speed turbine

Low specific speed turbine

Medium specific speed turbine

Specific speeds above 100 are considered high values. Kaplan turbine works at a

High specific speed turbine

Medium specific speed turbine

Low specific speed turbine

Low low specific speed turbine

That carries the blading to convert the thermal energy of the steam into the rotary motion of the shaft,

Rotor

Blades

Combustion chamber

Nozzle

Inside of which the rotor turns, that serves as a pressure vessel for containing the steam

Casing

Nozzle

Blades

Governor

Modern turbine blades often used, except one

Chromium

Cobalt

Rhenium

Copper

S a safety system located in the steam flow path having a ________ located in the steam flow path upstream of the turbine.

Stop valve

Purge valve

Check valve

Relief valve

Located in the stream flow path downstream of the turbine, and a combined regulating and safety device connected to the turbine

Vacuum break valve

Stop valve

Gate valve

Check valve

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