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Regeneration MCQ Question 4. Download Solution PDF. Consider the following Statements in respect of regenerative Rankine cycle: 1) Regeneration increases the efficiency of the cycle. 2) The boiler capacity is increased for a given output. 3) The capacity of the condenser is reduced.Get Price
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Definitions for the Act. 1 For the purposes of the Act: "boiler" means a vessel in which, by the application of heat, (a) gas, steam or vapour is capable of being generated and pressurized, or (b) a liquid is capable of being pressurized or heated and includes fittings and boiler external piping associated with the vessel; "boiler system" means a power plant, heating plant, low …Get Price
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b) A fire tube boiler occupies less space than a water tube boiler, for a given power c) Steam at a high pressure and in large quantities can be produced with a simple vertical boiler d) all of the mentioned Answer: a Explanation: A typical vertical boiler can have only one fire tube for the flow of fire or heat. 6.Get Price
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Overheating of boiler heating surfaces due to low water: Choose one answer. a. Is a major cause of boiler failure b. Will cause a furnace explosion c. Can be eliminated with a low water fuel cutoff d. Cannot occur in a hot water boiler e. Can be prevented with proper water treatmentGet Price
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Heat is supplied to the water at temperatures below the maximum temperature of the cycle. 8. Rankine cycle efficiency for a power plant is 29.6%. The Carnot cycle efficiency will be. 9. 10. Rankine cycle operating on given condenser pressure (lower limit) and boiler pressure (upper limit) has higher thermal efficiency than the Carnot cycle Get Price
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Power Plant Engineering MCQ Questions Answers Mechanical two isentropic processes and two constant pressure processes (e) two isothermal processes and three constant pressure processes (d) none of the above. View Answer. Option – b) 13) Thermal efficiency of steam power plant is maximum at boiler pressure of. a) 120 bar. b) 146 bar. c Get Price
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57. When lighting up an oil fired boiler that employs steam atomizing oil burners, the: a. Fuel valve is opened before the steam atomizing valve b. Steam atomizing valve is opened before the fuel valve c. Burner must be purged first d. Oil pressure should be approximately 200 kPa greater than the steam pressure e. Draft fans must be at 50% of Get Price
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(c) reduce the back pressure so that maximum heat energy can be extracted from steam. (d) provide a closed cycle. Answer: (c) reduce the back pressure so that maximum heat energy can be extracted from steam. 17. The function of a condenser in a steam power plant is to (a) condense the large volume of steam to water to be used as boiler feed water.Get Price
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Jun 12, 2017 · partial pressure of air and steam be pa andps respectively in a condenser, then according to Dalton's law, the pressure in condenser is equal to (a) Ps-Pa (b) pa-ps (C) Pa+P, Ans: c. 12. Equivalent evaporation is the amount of water evaporated in a boiler from and at (a) 0°C (b) 100°C (c) saturationGet Price
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17. The function of a condenser in a steam power plant is to (a) condense the large volume of steam to water to be used as boiler feed water. (b) receive the large volume of steam exhausted from the steam turbine. (c) maintain pressure below atmospheric so that maximum heat energy can be extracted from steam. (d) all of the above.Get Price
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A boiler pressure explosion: a. Could be the result of water in the fuel oil b. Could be the result of inadequate ignition c. May be caused by a low water condition d. Could result from improper soot blowing procedures e. Could result from a defective flame scannerGet Price
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You can send your comments directly at [email protected] 3. The economiser is used in boilers to.. A. Increase thermal efficiency of boiler B. Economise on fule C. Extract heat from the exhaust the gases D. Increase flue gas temperatureGet Price
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A boiler pressure or waterside explosion a) could be the result of water in the fuel oil b) could be the result of inadequate ignition c) may be caused by a low water conditionGet Price
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What is the feature of the Loffler boilers? (a) Evaporating water by superheated steam. (b) Provide better efficiency by re-circulating gas coming out of the turbine. (c) Produce better steam quality by heating the boiler furnace above critical degrees. (d) Eliminate the extra components used.Get Price
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The high-pressure liquid enters a boiler where it is heated at constant pressure by an external heat source to become a dry saturated vapour. Process 3 – 4: Isentropic expansion The dry saturated vapour expands through a turbine, generating power.Get Price
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Ans: d. 69. In a steam power plant, the function of a condenser is. (a) to maintain pressure below atmospheric to increase work output from the primemover. (b) to receive large volumes of steam exhausted from steam prime mover. (c) to condense large volumes of steam to water which may be used again in boiler.Get Price
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1) Check the rest of the boiler room equipment. 2) Add more water to the boiler to replace the blowdown water. 3) Fill in the log book for your shift. 4) Clean up the area close to the boiler. 5) Concentrate only on blowing down the boiler. 5) Concentrate only on blowing down the boile r.Get Price
In a boiler installation the natural draught is produced
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4th Class Power Engineering Unit B4: Boiler Plant
Before performing a try lever test on a power boiler, what pressure should the boiler be at? Select one: a. the boiler MAWP b. the set pressure of the safety valve c. at least 75% of the set pressure of the safety valve d. at or above 750 kPaGet Price
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Economizer is normally employed when boiler pressure exceeds: a) 70 kg/cm2 b) 50 kg/cm2 c) 30 kg/cm2 d) Can be used for all pressures THERMAL POWER PLANT MCQs. 11. Coal rank classifies coal as per its: a) Specific gravity 300+ TOP POWER PLANT Engineering Multiple Choice Questions and Answers ;Get Price
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