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Questions (92 - 98)
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In this lesson, questions ( 92 - 98) have been explained.

Harshit Aggarwal
Cleared UPSC ESE twice with Rank 63 and 90 in mechanical engg. Got 99 percentile in GATE. Cracked ONGC, BHEL,ISRO, SAIL, GAIL successfully

U
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why r u so late sir ? plz upload video with english medium AIR news
  1. COURSE: Questions on Steam Turbine Lesson : Questions-(92- 98)


  2. About me Graduated from NIT Nagpur in 2008 A. Cleared Engineering Services Examination (ESE-UPSC) Exam Got the offer letter from most of the Maharatna and Navratna Companies Cleared GATE Exam Rate, Review, Recommend, Share <* Follow me on Unacademy at: https://unacademy.in/user/harshit aggarwal


  3. Question 92 In a pulverised-fuel-fired large power boiler, then heat transfer from the burning fuel to the walls of the furnace is (a) By conduction only (c) By conduction and convection (b) By convection only (d) predominantly by radiation Ans c


  4. Question 93 Match List I with List II and select the correct answer: List II List I (Type of Coal) A. Lignite B. Anthracite (Coal properties) 1. Artificial fuel derived from coal 2. Contains inflammable gas (volatile matter) and bums with flame 3. Very hard and high heating value 4. High ash content and less volatile matter C. Bituminous D. Cock (a) 2 34 (41 23 4 3 (d) 4 Ans: d


  5. Question 94 Weight percentage of which one of the following is determined by Proximate analysis of coal? (a) Fixed carbon, volatile matter, moisture and ash (b) All solid and gaseous components (c) All solid & gaseous components except volatile matter (d) Fixed carbon and volatile matter Ans a


  6. Question 95 is used to determine the Bomb calorimeter (a) Solid fuel only (c) Solid as well as gaseous fuels calorific value of (b) Gaseous fuels only (d) Solid as well as liquid fuels Ans : d


  7. Question 96 The calorific value determined by the bomb calorimeter is (a) Lower calorific value at constant pressure (b) Higher calorific value at constant pressure (c) Lower calorific value at constant volume (d) Higher calorific value at constant volume Ans: d


  8. Question 97 Which one of the following gaseous fuels does not have different higher and lower calorific values? (a) Methane (b) Ethane (c) Carbon monoxide (d) Hydrogen


  9. Solution 97 Since CO does not have hydrogen content; the HCV and LCV are same Ans c


  10. Question 98 Consider the following statements: The difference between higher and lower heating values of the fuels is due to 1. Heat carried by steam from the moisture content of fuel 2. Sensible heat carried away by the flue gases 3. Heat carried away be steam from the combustion of hydrogen in the fuel 4. Heat lost by radiation On these statements (a) 2, 3 and 4 are correct (c) 3 alone is correct (b) 1 and 2 are correct (d) 1, 2, 3 and 4 are correct Ans: c


  11. THANK YOU


  12. COURSE: Questions on Steam Turbine Lesson : Questions-(92- 98)


  13. Question 92 In a pulverised-fuel-fired large power boiler, then heat transfer from the burning fuel to the walls of the furnace is (a) By conduction only (c) By conduction and convection (b) By convection only (d) predominantly by radiation Ans c


  14. Question 95 is used to determine the Bomb calorimeter (a) Solid fuel only (c) Solid as well as gaseous fuels calorific value of (b) Gaseous fuels only (d) Solid as well as liquid fuels Ans : d


  15. Solution 97 Since CO does not have hydrogen content; the HCV and LCV are same Ans c


  16. Question 98 Consider the following statements: The difference between higher and lower heating values of the fuels is due to 1. Heat carried by steam from the moisture content of fuel 2. Sensible heat carried away by the flue gases 3. Heat carried away be steam from the combustion of hydrogen in the fuel 4. Heat lost by radiation On these statements (a) 2, 3 and 4 are correct (c) 3 alone is correct (b) 1 and 2 are correct (d) 1, 2, 3 and 4 are correct Ans: c


  17. THANK YOU