Melting point rises slightly and boiling point drops markedly
Melting point rises markedly and boiling point drops markedly
Melting point drops slightly and boiling point drops markedly
Melting point drops slightly and boiling point drops slightly
A. Melting point rises slightly and boiling point drops markedly
Large marine propulsion
Electric power generation
Direct drive of fans, compressors, pumps
All of these
Single tube, horizontal, internally fired and stationary boiler
Single tube, vertical, externally fired and stationary boiler
Multi-tubular, horizontal, internally fired and mobile boiler
Multi-tubular, horizontal, externally fired and stationary boiler
3.3 bar
5.46 bar
8.2 bar
9.9 bar
Zeroth law of thermodynamics
First law of thermodynamics
Second law of thermodynamics
None of these
Give maximum space
Give maximum strength
Withstand pressure inside boiler
Resist intense heat in fire box
Same
Less
More
None of these
Dry
Wet
Saturated
Supersaturated
Economiser
Superheater
Both (A) and (B)
None of these
Mass of the steam discharged increases
Entropy and specific volume of the steam increases
Exit velocity of steam reduces
All of these
Steam temperature remains constant
Steam pressure remains constant
Steam enthalpy remains constant
Steam entropy remains constant
Ratio of thermal efficiency to the Rankine efficiency
Ratio of brake power to the indicated power
Ratio of heat equivalent to indicated power to the energy supplied in steam
Product of thermal efficiency and Rankine efficiency
Wet
Superheated
Remain dry saturated
Dry
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.
Steam jet
Centrifugal fan
Chimney
Both (A) and (B)
24 m
35 m
57.5 m
79 m
And its corresponding conversion into dry saturated steam at 100°C and 1.033 kg/cm²
And its corresponding conversion into dry steam at desired boiler pressure
Conversion into steam at atmospheric condition
Conversion into steam at the same pressure at which feed water is supplied
Internally fired boiler
Externally fired boiler
Natural circulation boiler
Forced circulation boiler
Reduce speed of rotor
Improve efficiency
Reduce exit losses
All of these
One fourth
Half
One
Two
Increases the mean effective pressure
Increases the workdone
Decreases the efficiency of the engine
All of these
(h - hf1)/2257
(h + hf1)/2257
(h × hf1)/2257
None of these
Various chemical constituents, carbon, hydrogen, oxygen etc, plus ash as percents by volume
Various chemical constituents, carbon, hydrogen, oxygen, etc, plus ash as percents by weight
Fuel constituents as percents by volume of moisture, volatile, fixed carbon and ash
Fuel constituents as percents by weight of moisture, volatile, fixed carbon and ash
Horizontal fire tube boiler
Horizontal water tube boiler
Vertical water tube boiler
Vertical fire tube boiler
Water space also
Chimney
Steam space
Superheater
Minimum
Maximum
Zero
None of these
Avoid excessive build up of pressure
Avoid explosion
Extinguish fire if water level in the boiler falls below alarming limit
Control steam dome
40 percent
50 percent
60 percent
70 percent
Stationary fire tube boiler
Internally fired boiler
Horizontal boiler
All of these
More
Equal
Less
Could be more or less depending on the size of plant
Increases steam pressure
Increases steam flow
Decreases fuel consumption
Decreases steam pressure