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 Boiler Operation Engineer (BOE) Question And Answer Set - 46 1. What purpose do baffle plates serve in a Babcock and Wilcox boiler? a) They direct the flow of water b) They direct the flow of steam c) They direct the flow of hot gases d) They direct the flow of air to combustion chamber Ans. c 2. Stirling boiler is _____ a) a fire tube boiler b) a bent-tube (water tube) boiler c) a horizontal straight tube (water tube) boiler d) a high pressure boiler Ans. b 3. Which of the following statements is FALSE for a cross drum Babcock and Wilcox boiler? a) The alignment of boiler drum is different in cross drum and longitudinal drum boilers b) Any number of connecting tubes can be used c) Steam of pressure 100 bar could be generated d) Steam capacity is 45000 kg/hr Ans. d 4. In Babcock and Wilcox boiler, just before entering the superheater the steam enters _____ a) uptake header b) down take header c) main stop valve d) anti priming pipe Ans. d 5. What is the maximum steam capacity of a...

1. Which of the following statements about Velox boiler is FALSE? a) It starts quickly b) It is compact c) Combustion rates are low d) Pressurized air is used Ans. c 2. Which of the following statements about super-critical is TRUE? a) It only needs preheater and superheater b) It only needs economizer and preheater c) It only needs economizer and superheater d) It only needs preheater Ans. a 3. Which of the following statements about Benson boiler is correct? a) It requires large surface area b) It is prone to explosions more than other boilers c) It takes a lot of time to start d) It is lighter than other boilers Ans. d 4. Which of the following statements is FALSE about Benson boiler? a) Bubble formation in the heating tubes is prevented by slow heating b) It is a forced circulation boiler c) Oil is used as fuel d) Feed water is compressed to 235 bar Ans. a 5. What is the maximum working pressure obtained by a commercial Benson boiler? a) 300 atm b) 400 atm c) 500 atm d) 600 atm Ans...

1. What is boiler mountings & its purposes? Ans.   Boiler mountings are installed for safety of a boiler. Examples of boiler mountings are water level indicator, steam stop valve, man hole, pressure gauge, safety valve,  feed check valve  etc. 2. Purpose of  w ater level indicator in boiler? Ans.  Water level indicator constantly indicates the level of water inside the boiler. The water level in a boiler must not fall below a certain safe-level. If the level of water inside the boiler happens to fall below safe-level, crack and leak can occur. 3. What is the purpose of guard glass in a glass-tube water level indicator? Ans.  The guard glass is tough. It doesn’t give shards on breaking. Guard glass covers the gauge glass. If due to sudden rush of water and steam the gauge glass breaks, the guard glass protects the attendant from getting hurt. 4.  What is the purpose of pressure gauge? Ans. Pressure gauge measures the pressure exerted inside the boil...

Boiler Operation Engineer MCQ Set - 45 1. Which of the following is NOT a valid type of air preheater? a) Tubular type b) Plate type c) Temperature type d) Storage type Ans. c 2. The degree of preheating does not depend on _____ a) type of fuel b) initial temperature of air c) type of fuel burning equipment d) boiler and furnace ratings Ans. b 3. Which of the following statements about air preheaters is FALSE? a) It increases the temperature of air being supplied to the furnace b) Storage type air preheaters cannot be used in larger plants c) The temperature of the hot gases released through the chimney is kept minimum d) It facilitates the burning of fuel Ans. b 4. What is the function of a superheater? a) It increases the temperature of the air being supplied to furnace b) It increases the temperature of steam above saturation temperature c) It increases the temperature of feed water d) It increases the temperature of the flue gases leaving the furnace Ans. b 5. Which of the followin...

 Fourier transform infrared (FTIR) spectroscopy examine the surface changes of anion exchangers. FTIR spectroscopy enables identification of the foulants. FTIR analyses enabled identification of the foulant as humic substances, which accumulated on the beads surface and remained after regeneration. The image analyses helped to observe the changes of beads shapes from smooth and circular to uneven and oval. Related Post : How to calculate suction head in centrifugal pump Top 16 Power System Interview Questions   Boiler Feed Pump (B.F.P) Starting Procedure In Thermal Power Plant Types of Mechanical Seals in Pump  Why pumps are used in parallel and series mode of operations ? What is priming of a centrifugal pump and why it is required  What are the types of pumps | Classification of pumps - interview questions Gland Seal vs. Mechanical Seal  What is the function of volute casing in centrifugal pump? Why & Where the Silica Fouling Occurs in DM plant - Power Pla...

 Organic fouling of an anion exchange resin results from the adsorption of the organics on its surface which block the diffusion of mobile ions inside the resin beads. As a result a decrease in a total capacity is observed. Generally the performance of anion exchangers is determined based on the breakthrough curves and studies of the adsorption kinetics. One of the main problems concerning anion exchange resins is their susceptibility to fouling. The most important foulants of anion exchange resins include colloidal additives, iron and manganese compounds, organic impurities, free chlorine and dissolved oxygen. Each foulants affects the efficiency of the anion exchanger mainly by decreasing its capacity. FTIR spectroscopy is quick and cost-effective method to identify the foulants, to assess degradation and deformation of the ion exchanger and for the determination of functional groups responsible for sorption of specific ions Read More BOE Interview Questions   What are ...

 Silica fouling can occur in strong base anion resins if the regenerant temperature is too low, or in weak base resins if the effluent caustic from the SBA unit used to regenerate the weak base unit contains too much silica. At low pH levels, polymerization of the silica can occur in a weak base resin. It can also be a problem in an exhausted strong base anion resin. Silica fouling is removed by a prolonged soak in warm (120 o F) caustic soda. Related Post : How to calculate suction head in centrifugal pump Top 16 Power System Interview Questions   Boiler Feed Pump (B.F.P) Starting Procedure In Thermal Power Plant Types of Mechanical Seals in Pump  Why pumps are used in parallel and series mode of operations ? What is priming of a centrifugal pump and why it is required  What are the types of pumps | Classification of pumps - interview questions Gland Seal vs. Mechanical Seal  What is the function of volute casing in centrifugal pump?   Power Plant Intervie...

  Boiler Operation Engineer MCQ Set - 44 1 . The rotating element of the rotary feed pump is called _____ a) impeller b) propeller c) armature d) propulsor  Ans. a 2. Which of the following statements about reciprocating feed pumps is FALSE? a) Water is discharged in alternate strokes in single acting pump b) Water is discharged in each stroke in double acting pump c) They are supplied steam from the boiler itself d) In double acting pump water us displaced by only one side of the piston Ans. d 3. Which of the following statements about feed pump is TRUE? a) It is used to deliver feed water to the boiler b) It is used to take out steam from the boiler c) It is a boiler mounting d) It delivers air to the combustion chamber Ans. a 4. Which of the following is NOT a boiler accessory? a) Feed pump b) Steam trap c) Steam separator d) Mud hole (sight hole) Ans. d 5. What is the function of an air pre heater? a) It increases the temperature of air before it enters the furnace b) It i...

Boiler Operation Engineer Question Set - 43 1. Feed check valve is used to empty the boiler when it is required to be cleaned. a) True b) False Ans. b 2. Where is feed check valve mounted? a) On top of the boiler shell b) At the bottom of the boiler shell c) Above the water level to be maintained d) Slightly below the water level to be maintained Ans. d 3. Which of the following statement about stop valve (or junction valve) is FALSE? a) It regulates the flow of steam b) Fitted at top of the boiler c) It connects boiler with the steam pipe d) The smaller sized valve is called junction valve Ans. d 4. Which of the following is NOT a boiler mounting? a) Steam stop valve b) Man hole c) Economiser d) Pressure gauge Ans. c 5. Which of the following statements about feed check valve is FALSE? a) It controls the flow of water b) It only allows flow of water in one direction c) It is fitted on top of the boiler shell d) It consists of check valve which automatically moves up and down under pre...

 Boiler Operation Engineer MCQ Set - 42 1. Which of the following statements regarding boiler mountings is TRUE? a) They ensure safe operation of the boiler b) They are installed to increase efficiency of the boiler c) Economiser, super heater and feed pumps are boiler mountings d) Water level indicator is not a boiler mounting Ans. a 2. Water level indicator _____ a) indicates the amount of steam in the boiler b) indicates the amount of water in the boiler c) indicates the amount of water converted to steam d) indicates the amount of steam left in the boiler Ans. b 3. What is the purpose of guard glass in a glass-tube water level indicator? a) It protects the attendant, if water starts leaking b) It protects the water gauge, if steam pressure increases the design pressure c) It protects the attendant, if boiler cracks d) It protects the attendant, if the gauge glass breaks Ans. d 4. What is the purpose of pressure gauge? a) It measures the pressure exerted on the boiler shell from...