Bunsen burner is an example of a/an _____________ burner?

Related Mcqs:

1. Correct viscosity of furnace oil at the burner tip for proper atomisation is about 25 centistokes. To reduce the viscosity of high viscosity furnace oil (250 centistokes) to the correct atomisation viscosity (i.e. 25 cst), it should be preheated to about ______________°C?

   A. 70
   B. 85
   C. 105
   D. 145

2. The main function of primary air in pulverised coal fired burner is to_________________?

   A. Burn CO to CO2
   B. Dry and transport the coal
   C. Have proper combustion by supplying it around the burner
   D. Preheat the tertiary air used for complete combustion of CO to CO2

3. Atomising steam to fuel oil ratio in a burner should be around__________________?

   A. 0.5
   B. 1.5
   C. 2.5
   D. 3.5

4. Temperature of preheated air used for the transportation of pulverised coal through pipes to the burner of a boiler furnace is restricted to a maximum limit of about 300° C to avoid the___________________?

   A. Requirement of large volume combustion chamber
   B. Risk of explosion
   C. Chances of clinker formation
   D. Incomplete combustion of coal

5. Turndown ratio of a gas burner is equal to the __________________ ?

   A. Maximum to minimum heat input ratio
   B. Maximum to minimum permissible gas flow rate
   C. Both A. & B.
   D. Minimum to maximum heat input ratio

6. _____________ of the coal is the basis for Seylor’s coal classification?

   A. Proximate analysis
   B. Ultimate analysis
   C. Caking index
   D. Calorific value

7. Calorific value of blast furnace gas is around _____________ KCal/Nm3?

   A. 850
   B. 1800
   C. 4200
   D. 6500

8. Calorific value of a typical dry anthracite coal may be around _____________ Kcal/kg?

   A. 1000
   B. 4000
   C. 8000
   D. 15000

9. Light oil whose major component is Benzol, is obtained by the distillation of crude tar in the temperature range of _____________ °C?

   A. 80-170
   B. 200-300
   C. 250-270
   D. 280-300

10. Gasification of the solid fuel converts its organic part into combustible by interaction with air/oxygen and steam so as to obtain a secondary gaseous fuel of high calorific value having no ash. Gasification reactions are normally carried out at about _____________ °C?

    A. 400-500
    B. 900-1000
    C. 1400-1500
    D. 1700-1800