Below atmospheric pressure
1 kg/cm²
100 kg/cm²
225.6 kg/cm²
D. 225.6 kg/cm²
Ratio of heat actually used in producing steam to the heat liberated in the furnace
Ratio of the mass of steam produced to the mass of total water supplied in a given time
Ratio of the heat liberated in the furnace to the heat actually used in producing steam
None of the above
To dry flue gases
In moisture present in the fuel
To steam formed by combustion of hydrogen per kg of fuel
All of the above
3.3 bar
5.46 bar
8.2 bar
9.9 bar
Climatic conditions
Temperature of furnace gases
Height of chimney
All of these
373°K
273.16°K
303°K
0°K
Mechanical fan
Chimney
A steam jet
All of these
Receiver type
Tandem type
Woolf type
All of these
Drooping characteristic
Linear characteristic
Rising characteristic
Flat characteristic
Efficiency of the boiler
Efficiency of the chimney
Efficiency of the fan
Power of the boiler
Condenser efficiency
Vacuum efficiency
Nozzle efficiency
Boiler efficiency
As an impulsive force
As a reaction force
Partly as an impulsive force and partly as a reaction force
None of the above
More
Less
Same
Could be more or less depending on other factors
150 kg/h
210 kg/h
280 kg/h
340 kg/h
Mean diameter and thickness
Inside diameter and thickness
Outside diameter and thickness
Outside diameter and inside diameter
Blow off cock
Fusible plug
Superheater
Stop valve
Barometric pressure + actual pressure
Barometric pressure - actual pressure
Gauge pressure + atmospheric pressure
Gauge pressure - atmospheric pressure
One
Two
Three
Four
At the entrance to the nozzle
At the throat of the nozzle
In the convergent portion of the nozzle
In the divergent portion of the nozzle
Former occupies less space for same power
Rate of steam flow is more in former case
Former is used for high installed capacity
Chances of explosion are less in former case.
Blow off cock
Stop valve
Superheater
None of these
The ratio of heat actually used in producing the steam to the heat liberated in the furnace
The amount of water evaporated or steam produced in kg per kg of fuel burnt
The amount of water evaporated from and at 100°C into dry and saturated steam
The evaporation of 15.653 kg of water per hour from and at 100°C
Stationary fire tube boiler
Internally fired boiler
Horizontal boiler
All of these
Lever safety valve
Dead weight safety valve
High steam and low water safety valve
All of these
Condenser
Condensate pump
Air extraction pump
All of these
Side by side and each cylinder has common piston, connecting rod and crank
Side by side and each cylinder has separate piston, connecting rod and crank
At 90° and each cylinder has common piston, connecting rod and crank
At 90° and each cylinder has separate piston, connecting rod and crank
Direction of steam flow
Number of stages
Mode of steam action
All of these
Wet steam
Saturated steam
Superheated steam
Cushion steam
100°C
Above dew point temperature of flue gases
Below dew point temperature of flue gases
Less than wet bulb temperature of flue gases
Equal to
Twice
Three times
Four times
0.1 kg/cm²
1 kg/cm²
100 kg/cm²
225.6 kg/cm²