A safety valve usually employed with stationary boilers is
(A) Lever safety valve
(B) Dead weight safety valve
(C) High steam and low water safety valve
(D) All of these

1 Answer

Answer :

(D) All of these

Related questions

Description : Water tube boilers produces steam at a________ pressure than that of fire tube boilers. a) Higher b) Lower c) Same d) None of the above

Last Answer : a) Higher

Description : Industrial boilers are closed vessels that use a fuel source or electricity to generate ________for industrial purposes. • Fuel Food • Steam

Last Answer : • Steam

Description : Steam Boilers is used in _________industries • Heating Requirement for Facility. • Steam for Batching. • Steam for Processing. • All of the above

Last Answer : • All of the above

Description : Where are steam boilers used in the industries a) heating requirement for facility b) steam for batching c) steam for processing d) all of the above

Last Answer : d) all of the above

Description : The draught in locomotive boilers is produced by a ___________ a) Chimney b) Centrifugal fan c) Steam jet d) All of the above

Last Answer : c) Steam jet

Description : A device known as a _______ is used to release condensate from the pipework whilst preventing the steam from escaping from the system. a. Steam traps b. Steam pipes c. Boiler nose d. Release valve

Last Answer : a. Steam traps

Description : High pressure boilers operate at 1. Lower than 15 psig 2. Higher than 15 psig 3. 15 psig 4. None of above

Last Answer : 2. Higher than 15 psig

Description : Fire tube boilers are those in which a) Flue gases pass through tubes and water around it b) Water passes through the tubes and flue gases around it c) Work is done during adiabatic expansion d) Change is enthalpy

Last Answer : a) Flue gases pass through tubes and water around it

Description : Water tube boilers are those in which a) Flue gases pass through tubes and water around it b) Water passes through the tubes and flue gases around it c) Work is done during adiabatic expansion d) Change is enthalpy

Last Answer : b) Water passes through the tubes and flue gases around it

Description : Boilers are used in places like 1. Domestic heating 2. Commercial heating 3. Industrial heating application 4. All of above

Last Answer : 4. All of above

Description : Use of ______ is prohibited in process boilers. a. Use of a common gas b. combustion air control linkage c. jack shaft d. All of the above

Last Answer : d. All of the above

Description : For process boilers , combustion air fans must meet the following requirements ___ a. The fan motor shall be driven by a variable speed drive b. The fan motor shall include controls that limit the fan motor demand to no more than 30 %. c. Both a. & b. d. None of the above

Last Answer : c. Both a. & b.

Description : Process boilers with capacity of 2.5 MMBtu/h and above are also referred as _ a. Natural draft boilers b. Atmospheric boilers c. Both a. And b. d. None of the above

Last Answer : a. Natural draft boilers

Description : Combustion air positive shut-off shall be provided on all newly installed _______ a. Grant boilers b. Process boilers c. Worcester boilers d. All of the above

Last Answer : b. Process boilers

Description : The economiser is used in boilers to........ A]Increase thermal efficiency of boiler B]Economise on fuel C]Extract heat from the exhaust the gases D]Increase flue gas temperature

Last Answer : A]Increase thermal efficiency of boiler

Description : What is the main disadvantage of Lamont boiler ? a. Less flexible in design b. Low heat transfer rate c. Formation of bubbles d. Low steam generation capacity

Last Answer : c. Formation of bubbles

Description : Which of these is a stationary boiler? • Locomotive boiler • Marine boiler • Mobile boiler • Babcock Wilcox boiler

Last Answer : • Babcock Wilcox boiler

Description : Based on the exhaust gas analysis, a controller maintains stoichiometric combustion __ a. by commanding a servo motor to adjust the combustion air damper b. By commanding servo motor to adjust the fuel supply valve. c. Both a. & b. d. None of the above.

Last Answer : c. Both a. & b.

Description : Where is water steam separator drum located in Lamont boiler ? a. Inside of the boiler b. Right above the furnace c. Before the feed water pump d. Outside the boiler

Last Answer : d. Outside the boiler

Description : Through what is feed water from hot-well is passed through, before entering steam and water drum in Lamont boiler? a. Evaporator tubes b. Economizer c. Distributor header d. Circulating pump

Last Answer : b. Economizer

Description : The propulsion of water into steam drum by extremely rapid, almost explosive boiling of water at the heating surface is called ___________ a) Foaming b) Priming c) Corrosion d) Caustic embrittlement

Last Answer : b) Priming

Description : When the bubbles of steam are produced? • Once the water reaches saturation temperature • Once the water starts evaporating • Once the temperature decreases • None of the above

Last Answer : • Once the water reaches saturation temperature

Description : Find the wrong statement. • Boiler is used to produce electricity in the energy business. • Boiler is used to produce steam for generating electricity. • Boiler can pressurize the water and can also evaporate it. All are wrong.

Last Answer : • Boiler can pressurize the water and can also evaporate it.

Description : A boiler or steam generator is a device used to create steam by applying heat energy to _____. • Water • Petrol • Oil • All of the above

Last Answer : • Water

Description : ……… is excellent carrier of heat a) Water b) steam c) solid d) None of above

Last Answer : b) steam

Description : Steam is regularly used for propulsion (as a driving force) in applications such as ________ turbines. • Gas turbine • Steam turbine • Water turbine

Last Answer : • Steam turbine

Description : The generated heat is transferred to water to make ______ the process of boiling. • Steam • Boiler • Both • None

Last Answer : • Steam

Description : The _______ system includes anywhere that the steam condenses to form liquid water. a. Loop b. Power c. Liquid d. Condensate

Last Answer : d. Condensate

Description : A boiler is an enclosed vessel that provides a means for ________ and ______ heat to water until it becomes hot water or steam. a. Generate, boiler b. Condenser, loop c. Combustion, transfers d. All of above

Last Answer : c. Combustion, transfers

Description : A __________ is a type of heat exchange system where water is heated to its' boiling point via combustion of a fuel blown through a tube submerged in water. a. Condensate loop b. Hyperbolic cooling tower c. Steam boiler d. All of above

Last Answer : c. Steam boiler

Description : _________is the most widely used media in distribution of heat over distance in industries a) Steam b) light c) Springs c) water

Last Answer : a) Steam

Description : A boiler is a device used to create steam by applying __________to water a) Light energy b) heat energy c) Wind energy d) mechanical energy

Last Answer : b) heat energy

Description : What type of steam is generated by evaporator tube of Lamont boiler ? a. Saturated steam b. Unsaturated steam c. Superheated steam d. Flash steam

Last Answer : a. Saturated steam

Description : A turbine is said to have an axial discharge when the steam leaves the blade tip at _________ to the direction of the blade motion. (A) 60° (B) 90° (C) 180° (D) 270°

Last Answer : (B) 90°

Description : In a steam condenser, the partial pressure of steam and air are 0.06 bar and 0.007 bar respectively. The condenser pressure is (A) 0.007 bar (B) 0.053 bar (C) 0.06 bar (D) 0.067 bar

Last Answer : (D) 0.067 bar

Description : The pressure of steam in the engine cylinder at the beginning of the stroke is ________ the boiler pressure. (A) Equal to (B) Less than (C) Higher than (D) None of these

Last Answer : (B) Less than

Description : If steam is pressurized _____ • It occupies more space • It occupies less space • Both are correct • None of the above

Last Answer : • It occupies less space

Description : A steam and condensate system represents a _____ loop. • Discontinuous • Continuous • None of the above • All of the above

Last Answer : • Continuous

Description : Direct relation between…….. &………of saturated steam, the amount of energy input to process easy to control. a) volume, pressure b) volume, temperature c) temperature, pressure d) None of above

Last Answer : c) temperature, pressure

Description : when steam is condensate volume is drastically……. a) reduces b) increase c) both a) & b) d) None of above

Last Answer : a) reduces

Description : Rankine cycle efficiency in a good steam power station may be in the range between........ a.15% - 20% b.35% - 40% c.50% - 60% d.90% - 95%

Last Answer : b.35% - 40%

Description : What kind of energy output is obtained from a ‘Steam Power Plant’? a. Heat energy b. Sound energy c. Electricity d. Thermal energy

Last Answer : c. Electricity

Description : What increase as steam pressure increase inside a boiler • Force • Density • Rate of steam conversion • Viscosity

Last Answer : • Density

Description : What is the temperature at which the steam boiler are capable to withstand • 200°C • 280°C • 540°C • 358°C

Last Answer : • 540°C

Description : What is the function of boiler? • To burn the fuel in a confined closed system With the supply of air • To generate steam in varying pressure • To generate steam at constant pressure • To produce flue gases by burning fuel at a given pressure

Last Answer : • To generate steam at constant pressure

Description : Steam Properties and Qualities: • they are capable of dividing and renewing themselves for long periods • they are unspecialized • they can give rise to specialized cell types. • All of above

Last Answer : • All of above

Description : A _______ incorporates a firebox or furnace in order to burn the fuel and generate heat. • Steam • Boiler • Hydrogen • None

Last Answer : • Boiler

Description : Condensate is the liquid formed when steam passes from the ________ to the ______ state. a. Vapor, solid b. Solid, liquid c. Vapor, liquid d. None

Last Answer : c. Vapor, liquid

Description : Steam produced in a boiler can be used for a variety of purposes including space heating, drying and _________________ a. Sterilization b. Humidification c. Power generation d. All of above

Last Answer : d. All of above

Description : A -________ incorporates a firebox or furnace in order to burn the fuel and _________ heat. a. Boiler, generate b. Heat, boiler c. Steam, pressure d. None

Last Answer : a. Boiler, generate