- (A) heating the oil in the settling tanks
- (B) cooling the oil in the settling tanks
- (C) burning the oil
- (D) suspension
- (E) filtering
Mechanical Engineering Mcqs
- (A) keep the burner tips cool
- (B) aid in proper combustion
- (C) cause sputtering, possibly extinguish¬ing flame
- (D) clean the nozzles
- (E) reduce flame length
- (A) provide air around burners for obtaining optimum combustion
- (B) transport and dry the coal
- (C) convert CO (formed in lower zone of furnace) into C02 at higher zone
- (D) air-delivered by forced draft fan
- (E) none ot the above
- (A) increase thermal efficiency of boiler
- (B) economise on fuel
- (C) extract heat from the exhaust flue gases
- (D) increase flue gas temperature
- (E) to heat feed water by bled steam
- (A) correct fuel air ratio
- (B) proper ignition temperature
- (C) 02 to support combustion
- (D) all the three above
- (E) none of the above
- (A) 1 kg/cm
- (B) 6 kg/cm
- (C) 17 kg/cm2
- (D) 100 kg/cm2
- (E) 250 kg/cm2
- (A) increases
- (B) decreases
- (C) remains unaffected
- (D) first increases and then decreases
- (E) first decreases and then increases
- (A) increases
- (B) decreases
- (C) remains unaffected
- (D) first increases and then decreases
- (E) unpredictable
- (A) 100 kg/cm2 and 540°C
- (B) 1 kg/cm2 and 100°C
- (C) 218 kg/cm2 abs and 373°C
- (D) 218 kg/cm2 abs and 540°C
- (E) 100 kg/cm2 abs and 373°C
- (A) unburnt carbon in ash
- (B) incomplete combustion
- (C) ash content
- (D) flue gases
- (E) radiation losses
