Steam Boilers, Engines, Nozzles and Turbines For maximum discharge through a chimney, the condition is that height of hot gas column producing the draught should be One-half the height of chimney Two times the height of chimney Equal to the height of chimney Four times the height of chimney One-half the height of chimney Two times the height of chimney Equal to the height of chimney Four times the height of chimney ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Gusset stays in a boiler are provided to Prevent the bulging of flat surfaces Avoid explosion in furnace Support furnace freely from top Prevent leakage of hot flue gases Prevent the bulging of flat surfaces Avoid explosion in furnace Support furnace freely from top Prevent leakage of hot flue gases ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Which type of boiler can meet rapid changes of load? Horizontal fire tube type Forced circulation type Horizontal water tube type Vertical fire tube type Horizontal fire tube type Forced circulation type Horizontal water tube type Vertical fire tube type ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines The efficiency of an impulse turbine is maximum when (where Vb = Blade speed, V = Absolute velocity of steam entering the blade, and α = Nozzle angle) Vb = V cosα Vb = 0.5 V cosα Vb = 0.5 V² cosα Vb = V² cosα Vb = V cosα Vb = 0.5 V cosα Vb = 0.5 V² cosα Vb = V² cosα ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Latent heat of dry steam at atmospheric pressure is equal to 539 kcal/ kg 100 kcal/ kg 427 kcal/ kg 539 BTU/ lb 539 kcal/ kg 100 kcal/ kg 427 kcal/ kg 539 BTU/ lb ANSWER DOWNLOAD EXAMIANS APP
Steam Boilers, Engines, Nozzles and Turbines Rateau turbine is Velocity compounded turbine Pressure compounded turbine Pressure-velocity compounded turbine Simple reaction turbine Velocity compounded turbine Pressure compounded turbine Pressure-velocity compounded turbine Simple reaction turbine ANSWER DOWNLOAD EXAMIANS APP
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