The efficiency of a boiler is defined as
In surface condensers, the condensate and the cooling water mixes up.
A device used to empty the boiler whenever required and to discharge the mud, scale or sediments which are accumulated at the bottom of the boiler, is called blow off cock.
The ratio of the temperature rise of cooling water to the vacuum temperature minus inlet cooling water temperature is called
A water level indicator is a device to indicate the exact water level in the boiler at any instant.
Clearance ratio is the ratio of
A valve installed between the boiler and the feed pump is
Which of the following statement is correct ?
Which of the following is correct ? (where pa = Actual mean effective pressure, pm = Theoretical mean effective pressure, and K = Diagram factor)
A vessel into which the steam is exhausted and condensed after doing work in an engine cylinder or turbine is known as
Which of the following compound steam engine requires a smaller flywheel ?
The working pressure range for a La-Mont boiler is
The ratio of the energy required to produce the artificial draught (expressed in metres head or J/kg of flue gas) to the mechanical equivalent of extra heat carried away per kg of flue gases due to natural draught, is known as
The value of diagram factor depends upon
In a boiler, the heat is lost
In order to compare the capacity of boilers, the feed water temperature and working pressure are taken as
In a boiler, the heat is lost
The draught in locomotive boilers is produced by a
The function of a piston in a steam engine is
The function of an eccentric rod is
The crown of the fire box is made hemispherical in order to resist intense heat in the fire box.
A condenser maintains a low pressure (below atmospheric) so as to obtain the maximum possible energy from steam and thus to secure a high efficiency.
The ratio of heat actually used in producing the steam to the heat liberated in the furnace is known as equivalent evaporation from and atC.
The high steam and low water safety valve is not used in
A receiver type compound engine, requires a lighter flywheel.
For maximum discharge through a chimney, the condition is that height of hot gas column producing the draught should be
The amount of water evaporated from and atC into dry and saturated steam is called evaporative capacity of a boiler.
There is abouttoof coal saving when an economiser is used in a boiler.
In a Woolf type compound engine, the high pressure and low pressure cylinders
The difference between the atmospheric pressure and the absolute pressure is known as vacuum in a condenser.