Heat energy of steam into kinetic energy
Kinetic energy into heat energy of steam
Heat energy of steam into potential energy
Potential energy into heat energy of steam
A. Heat energy of steam into kinetic energy
Volume of intake steam
Pressure of intake steam
Temperature of intake steam
All of these
Straight
Circular
Curved
None of these
The given boiler with the model
The two different boilers of the same make
Two different makes of boilers operating under the same operating conditions
Any type of boilers operating under any conditions
Flue gases pass through tubes and water around it
Water passes through the tubes and flue gases around it
Forced circulation takes place
Tubes are laid vertically
Boiler effectiveness
Boiler evaporative capacity
Factor of evaporation
Boiler efficiency
Form lumps or masses of coke
Burn freely
Show little or no fusing action
Burn completely
Stage efficiency
Internal efficiency
Rankine efficiency
None of these
Increases the workdone through the turbine
Increases the efficiency of the turbine
Reduces wear on the blades
All of these
The cost of the engine, for the same power and economy, is more than that of a simple steam engine.
The forces in the working parts are increased as the forces are distributed over more parts.
The ratio of expansion is reduced, thus reducing the length of stroke.
The temperature range per cylinder is increased, with corresponding increase in condensation.
DIN
BS
ASTM
IBR
T1 /88.25H
88.25H/T1
T1 /176.5H
176.5H/T1
Velocity increases
Velocity decreases
Velocity remains constant
Pressure remains constant
Carnot cycle
Rankine cycle
Joule cycle
Stirling cycle
No heat drop in moving blades
No heat drop in fixed blades
Maximum heat drop in moving blades
Maximum heat drop in fixed blades
Lever safety valve
Dead weight safety valve
High steam and low water safety valve
Spring loaded safety valve
Have common piston rod
Are set at 90°
Have separate piston rods
Are set in V-arrangement
Coking coal
Non-coking or free burning coal
Pulverised coal
High sulphur coal
Same
Less
More
None of these
To guide motion of the piston rod and to prevent it from bending
To transfer motion from the piston to the crosshead
To convert heat energy of the steam into mechanical work id) to exhaust steam from the cylinder at proper moment
None of these
Wet steam
Dry saturated steam
Superheated steam
None of these
0.5 to 1 m
1 to 2 m
1.25 to 2.5 m
2 to 3 m
Minimum
Maximum
Zero
None of these
Approach temperature should be as low as possible
Handling and maintenance should be easier
Heat transfer area should be optimum
Stack gases should not be cooled to the dew point
Has high heating value
Retards electric precipitation
Promotes complete combustion
Has highly corrosive effect
To provide proper conditions for continuous complete combustion
Mix fuel with air and ignite
Separate ash from coal
Maintain heat supply to prepare and ignite the incoming fuel
9.81 Joules
102 Joules
427 Joules
None of these
78-81 %
81-85 %
85-90 %
90-95 %
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
Locomotive boiler
Lancashire boiler
Cornish boiler
Babcock and Wilcox boiler
A horizontal steam engine requires less floor area than a vertical steam engine
The steam pressure in the cylinder is not allowed to fall below the atmospheric pressure
The compound steam engines are generally non-condensing steam engines
All of the above