Fuels And Combustion - Practice Test

[#211] Method of maintaining fires in furnace during standby periods without undue consumption of fuel is called

(A) Back draughting

(B) Banking

(C) Under pressurising

(D) None of these

Correct Answer

(B) Banking

[#212] Increase in ash content of blast furnace coke

(A) Reduces its consumption in the furnace

(B) Increases its consumption in the furnace

(C) Does not affect its consumption in the furnace

(D) Decreases its hardness and abrasion resistance

Correct Answer

(B) Increases its consumption in the furnace

[#213] Coke oven gas consists mainly of

(A) H 2 & CH 4

(B) CO & CO 2

(C) H 2 & CO

(D) CH 4 & CO

Correct Answer

(A) H 2 & CH 4

[#214] Kopper-Totzek coal gasifier

(A) Can give ammonia synthesis gas (H 2 + N 2 )

(B) Is a moving bed reactor

(C) Cannot use coking coal

(D) Operate at very high pressure

Correct Answer

(A) Can give ammonia synthesis gas (H 2 + N 2 )

[#215] (64-132) rank coal (ASTM) means a coal with 64%

(A) Fixed carbon and having a heat value of 13, 200 BTU/1b

(B) Ash and a heating value of 13, 200 BTU/1b

(C) Fixed carbon and a heating value of 132 BTU/1b

(D) None of these

(E) Fixed carbon and having a heating value around 13, 200 BTU/1b

(F) Ash and heating value around 13, 200 BTU/1b

(G) Fixed carbon and heating value around 132 BTU/1b

(H) None of these

Correct Answer

(A) Fixed carbon and having a heat value of 13, 200 BTU/1b
(E) Fixed carbon and having a heating value around 13, 200 BTU/1b

Fuels And Combustion - Study Mode

[#211] Method of maintaining fires in furnace during standby periods without undue consumption of fuel is called

Correct Answer

[#212] Increase in ash content of blast furnace coke

Correct Answer

[#213] Coke oven gas consists mainly of

Correct Answer

[#214] Kopper-Totzek coal gasifier

Correct Answer

[#215] (64-132) rank coal (ASTM) means a coal with 64%

Correct Answer