- (A) higher effectiveness of boiler
- (B) high calorific value coal being burnt
- (C) fouling of heat transfer surfaces
- (D) raising of steam temperature
- (E) leakage of air
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- (A) same
- (B) more
- (C) less
- (D) less or more depending on size of boiler
- (E) unpredictable
- (A) tonnes/hr. of steam
- (B) pressure of steam in kg/cm2
- (C) temperature of steam in °C
- (D) all of the above
- (E) none of the above
- (A) 200-400 kcal/kg
- (B) 800-1200 kcal/kg
- (C) 2000-4000 kcal/kg
- (D) 5000-8000 kcal/kg
- (E) 8000-10,000 kcal/kg
- (A) dry
- (B) wet
- (C) saturated
- (D) supersaturated
- (E) superheated
- (A) induced draft fan
- (B) smoke meter
- (C) chimney
- (D) precipitator
- (E) pulveriser
- (A) all the fuel burns instantaneously producing high energy release
- (B) fuel burns with less air
- (C) coal bursts into flame without any external ignition source but by itself due to gradual increase in temperature as a result of heat released by combination of oxygen with coal
- (D) explosion in furnace
- (E) none of the above
- (A) increases steam pressure
- (B) increases steam flow
- (C) decreases fuel consumption
- (D) decreases steam pressure
- (E) increases life of boiler
- (A) has high heating value
- (B) retards electric precipitation
- (C) promotes complete combustion
- (D) has highly corrosive effect
- (E) facilitates ash removal
- (A) prevent the bulging of flat surfaces
- (B) avoid explosion in furnace
- (C) prevent leakage of hot flue gases
- (D) support furnace freely from top
- (E) prevent atmospheric air leaking into furnace
