Steam Boilers, Engines, Nozzles & Turbines Mcqs

MCQ: Superheating of steam is done at_________________?

  1. constant volume
  2. constant temperature
  3. constant pressure
  4. constant entropy
  5. constant enthaply

Releted Questions

Steam Boilers, Engines, Nozzles & Turbines Mcqs

MCQ: Which is not correct statement about effect of sulphur in fuel ___________________?

  1. it has heating value
  2. it helps in electrostatic precipitation of ash in flue-gases
  3. it leads to corrosion of air heaters, ducting, etc. if flue gas exit temperature is low
  4. it erodes furnace walls
  5. none of the above

D

MCQ: Which is not the correct statement about moisture in coal ______________________?

  1. inherent moisture and surface mois¬ture are different things
  2. in some coals moisture may be present upto 40%
  3. some moisture in coal helps in better burning which is not possible with completely dry coal
  4. it increases thermal efficiency
  5. moisture in coal is removed before firing by heating it with hot air

D

MCQ: Which is not correct statement about the function of furnace____________________?

  1. to provide proper conditions for con-tinuous complete combustion
  2. mix fuel with air and ignite
  3. separate ash from coal
  4. maintain heat supply to prepare and ignite the incoming fuel
  5. to minimise radiation losses

C

MCQ: Which is not correct statement about pulverised fuel firing ?

  1. high burning rate is possible
  2. heat release can be easily controlled
  3. fuel burns economically
  4. it is the best technique for burning high ash content fuel having low fusion ash
  5. separate mills are required to powder the coal

D

MCQ: Pick up wrong statement about desired properties of a good fuel__________________?

  1. high calorific value
  2. produce minimum smoke and gases
  3. ease in storing
  4. high ignition point
  5. ecomomical

D

Multiple Choice Questions and Answers