Decrease dryness fraction of steam
Decrease specific volume of steam
Increase the entropy
Increase the heat drop
C. Increase the entropy
Wet
Superheated
Remain dry saturated
Dry
Horizontal multi-tubular water tube boiler
Water wall enclosed furnace type
Vertical tubular fire tube type
Horizontal multi-tubular fire tube type
Degree of super-saturation
Degree of superheat
Degree of under-cooling
None of these
60°
90°
180°
270°
Volume
Pressure
Entropy
Enthalpy
Induced steam jet draught
Chimney draught
Forced steam jet draught
None of these
Cornish boiler is a water tube boiler whereas Lancashire boiler is a fire tube boiler
Cornish boiler is a fire tube boiler whereas Lancashire boiler is a water tube boiler
Cornish boiler has one flue tube whereas Lancashire boiler has two flue tubes
Cornish boiler has two flue tubes whereas Lancashire boiler has one flue tube
Cavitation of boiler feed pumps
Corrosion caused by oxygen
Heat transfer coefficient
pH value of water
Zero
Minimum
Maximum
None of these
Fixed blades
Moving blades
Both fixed and moving blades
None of these
Minimum
Maximum
Zero
None of these
0.528
0.546
0.577
0.582
Increases
Decreases
Remain unaffected
First increases and then decreases
Evaporative capacity
Factor of evaporation
Equivalent evaporation
One boiler h.p.
Locomotive boiler
Lancashire boiler
Cornish boiler
Babcock and Wilcox boiler
421 kg.m
421 kg.m
539 kg.m
102 kg.m
Climatic conditions
Temperature of furnace gases
Height of chimney
All of these
Slow speed engine
Medium speed steam engine
High speed steam engine
None of these
Zero
One
Two
Four
Initial conditions of steam
Back pressure
Initial pressure of steam
All of these
100 bar
150 bar
200 bar
250 bar
Wet steam
Dry saturated steam
Superheated steam
None of these
Horizontal straight line
Vertical straight line
Straight inclined line
Curved line
Mass of the steam discharged increases
Entropy and specific volume of the steam increases
Exit velocity of steam reduces
All of these
150 kg/h
210 kg/h
280 kg/h
340 kg/h
Efficiency of the boiler
Efficiency of the chimney
Efficiency of the fan
Power of the boiler
Remains the same
Increases
Decreases
Is unpredictable
Multi tubular
Horizontal
Internally fired
All of the above
Carbon, hydrogen, nitrogen, sulphur, moisture
Fixed carbon, ash, volatile matter, moisture
Higher calorific value
Lower calorific value
A fire tube boiler occupies less space than a water tube boiler, for a given power.
Steam at a high pressure and in large quantities can be produced with a simple vertical boiler.
A simple vertical boiler has one fire tube.
All of the above