Fuels and Combustion — Test 7
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Question 1
Coke ovens in steel plant are heated by ___________________?
Question 2
Bomb calorimeter is used for the determination of calorific value of the _____________ fuels?
Question 3
Flue gas discharge velocity through chimney of a big thermal power plant may be around ________________ m/sec?
Question 4
When steam is passed over coal resulting in the endothermic reaction represent by, C + H2O = CO + H2, it is called the _______________ of coal?
Question 5
Dust content in raw blast furnace gas is about _______________ gm/Nm3; hence it is cleaned to the dust level of about < 10 mg /Nm3 before use?
Question 6
Rate of low temperature oxidation of coal due to bad storage conditions_______________?
Question 7
Which of the following is called “blue gas”?
Question 8
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___________________?
Question 9
Use of excess of combustion air in the combustion of fuels results in__________________?
Question 10
Which of the following fuels is generally not used in thermal power plant boiler firing ?