SK1 Steam Boilers

What is the function of an economizer in a boiler?

• To convert liquid into gas through applied heat

• To regulate the flow of steam from the boiler to the main pipe

• To empty the boiler when needed for cleaning or maintenance

• To heat fluids or recover residual heat from combustion products

Which type of boiler is suitable for large power plants?

• Oil Burning Equipment

• Electrical boiler

• Water-tube boiler

• Fire-tube boiler

What is the purpose of a superheater in a boiler?

• To convert saturated steam into dry steam

• To measure the pressure exerted in the vessel

• To relieve pressure of steam by discharging the steam

• To indicate the water level in the boiler

What is the main function of a feed water heater in a boiler?

• To empty the boiler when needed for cleaning or maintenance

• To convert liquid into gas through applied heat

• To pre-heat water delivered to a steam generating boiler

• To regulate the flow of steam from the boiler to the main pipe

How is fuel distributed in a boiler during stoking?

• By converting liquid into gas through applied heat

• By heating water that falls from the steam drum

• By blowing pulverized coal into the firebox

• By injecting fuel into the combustion chamber using a spray nozzle

What is the purpose of a mud drum in a water tube boiler?

• To heat fluids or recover residual heat from combustion products

• To regulate the flow of steam from the boiler to the main pipe

• To collect solid residues formed from hardness and silica corrosion products

• To convert liquid into gas through applied heat

Which type of superheater is used to reheat exhaust steam to a superheated temperature once more?

• Tertiary superheater

• Primary superheater

• Intermediated superheater

• Secondary superheater

What is the main difference between a fire-tube boiler and a water-tube boiler?

• Hot gases are inside the tube and water is outside in a fire-tube boiler

• Both have the same rate of steam generation

• Water is inside the tube and hot gases are outside in a water-tube boiler

• Both use the same operating pressure

What is the main advantage of an electric boiler over fuel-heated boilers?

• Lower maintenance requirements

• Safety of operation

• Independence from external power sources

• Higher energy efficiency

What is the purpose of a fusible plug in a boiler?

• To convert liquid into gas through applied heat

• To regulate the flow of steam from the boiler to the main pipe

• To prevent fire when water level in the boiler drops too low

• To heat fluids or recover residual heat from combustion products