For the same length of stroke and speed of crankshaft, the piston speed for a double acting steam engine is _________ the piston speed of single acting steam engine.
For the same length of stroke and speed of crankshaft, the piston speed for a double acting steam engine is _________ the piston speed of single acting steam engine.
O₂ content in atmospheric air on volume basis is
O₂ content in atmospheric air on volume basis is
Maximum energy loss in a boiler occurs due to
Maximum energy loss in a boiler occurs due to
The pressure velocity compounded impulse turbine allows a bigger pressure drop and hence __________ numbers of stages are required.
The pressure velocity compounded impulse turbine allows a bigger pressure drop and hence __________ numbers of stages are required.
The diameter of flue tube in a Cornish boiler is _________ that of the shell.
The diameter of flue tube in a Cornish boiler is _________ that of the shell.
Orsat meter is used for
Orsat meter is used for
Alkaline pyrogallate is used in Orsat's apparatus for absorption of
Alkaline pyrogallate is used in Orsat's apparatus for absorption of
In water wall furnace, the heat is transferred to the water walls by
In water wall furnace, the heat is transferred to the water walls by
At very low temperature, the melting and boiling temperatures become equal. This temperature is
At very low temperature, the melting and boiling temperatures become equal. This temperature is
In designing air preheaters, the important design consideration is that
In designing air preheaters, the important design consideration is that
The relative efficiency is defined as the
The relative efficiency is defined as the
Efficiency of Rankine cycle can be increased by
Efficiency of Rankine cycle can be increased by
The selection of type and size of a steam boiler depends upon
The selection of type and size of a steam boiler depends upon
A device used in a boiler to control the flow of steam from the boiler to the main pipe and to shut off the steam completely when required, is known as
A device used in a boiler to control the flow of steam from the boiler to the main pipe and to shut off the steam completely when required, is known as
The artificial draught is produced by
The artificial draught is produced by
The device attached to the steam chest for preventing explosions due to excessive internal pressure of steam is called
The device attached to the steam chest for preventing explosions due to excessive internal pressure of steam is called
The function of injector used in small capacity boilers is to
The function of injector used in small capacity boilers is to
On Mollier chart, flow through turbine is represented by
On Mollier chart, flow through turbine is represented by
In fire tube boilers
In fire tube boilers
The amount of water evaporated in kg per kg of fuel burnt is called
The amount of water evaporated in kg per kg of fuel burnt is called
The natural draught is produced by
The natural draught is produced by
The maximum steam pressure in a Locomotive boiler is limited to
The maximum steam pressure in a Locomotive boiler is limited to
For the same diameter and thickness of tube, a water tube boiler has ________ heating surface as compared to fire tube boiler.
For the same diameter and thickness of tube, a water tube boiler has ________ heating surface as compared to fire tube boiler.
When the inlet pressure of steam is equal to the exit pressure, then
When the inlet pressure of steam is equal to the exit pressure, then
The efficiency of a boiler is defined as
The efficiency of a boiler is defined as
A throttle governed steam engine develops 15 kW with 280 kg per hour of steam and 35 kW with 520 kg per hour of steam. The steam consumption in kg per hour when developing 20 kW will be nearly
A throttle governed steam engine develops 15 kW with 280 kg per hour of steam and 35 kW with 520 kg per hour of steam. The steam consumption in kg per hour when developing 20 kW will be nearly
The process of maintaining the speed of the turbine constant for various load conditions, is known as
The process of maintaining the speed of the turbine constant for various load conditions, is known as
A fusible plug is fitted in small boilers in order to
A fusible plug is fitted in small boilers in order to
The diameter of tubes for natural circulation boiler as compared to controlled circulation boilers is
The diameter of tubes for natural circulation boiler as compared to controlled circulation boilers is
Which of the following substance will have same percentage in both proximate and ultimate analysis?
Which of the following substance will have same percentage in both proximate and ultimate analysis?
The maximum discharge through a chimney occurs when the height of chimney is
The maximum discharge through a chimney occurs when the height of chimney is
The impulse turbine rotor efficiency will have a maximum value of 0.5 cos 2α, where α is the nozzle exit flow angle, if the
The impulse turbine rotor efficiency will have a maximum value of 0.5 cos 2α, where α is the nozzle exit flow angle, if the
The power of a boiler may be defined as
The power of a boiler may be defined as
A steam nozzle converts
A steam nozzle converts
The maximum heat loss is a boiler occurs due to
The maximum heat loss is a boiler occurs due to
When the speed of the crankshaft is between 100 r.p.m. and 250 r.p.m., the engine said to be a
When the speed of the crankshaft is between 100 r.p.m. and 250 r.p.m., the engine said to be a
During storage, the heating value of coal
During storage, the heating value of coal
The fire tubes in a Scotch marine boiler are
The fire tubes in a Scotch marine boiler are
The high steam and low water safety valve is used to blow off steam when the
The high steam and low water safety valve is used to blow off steam when the
Steam turbines may be classified according to
Steam turbines may be classified according to
The ratio of heat actually used in producing the steam to the heat liberated in the furnace, is known as
The ratio of heat actually used in producing the steam to the heat liberated in the furnace, is known as
An economiser in a boiler
An economiser in a boiler
The latent heat of steam at pressures greater than atmospheric in comparison to latent heat at atmospheric pressure is
The latent heat of steam at pressures greater than atmospheric in comparison to latent heat at atmospheric pressure is
The basic purpose of drum in boiler is to
The basic purpose of drum in boiler is to
The balanced draft furnace is one using
The balanced draft furnace is one using
Coke is produced by
Coke is produced by
The major axis of elliptical manholes on the shell should be provided
The major axis of elliptical manholes on the shell should be provided
Which of the following is a fire tube boiler?
Which of the following is a fire tube boiler?
An economiser is generally placed between
An economiser is generally placed between
Presence of moisture in fuel oil would
Presence of moisture in fuel oil would
Stoichiometric quantity of air is the
Stoichiometric quantity of air is the
In locomotives, the draught is produced by
In locomotives, the draught is produced by
Lancashire boiler is of
Lancashire boiler is of
The state of vapor under saturation condition is described by
The state of vapor under saturation condition is described by
Pick up the correct statement as regards Cornish boiler and Lancashire boiler
Pick up the correct statement as regards Cornish boiler and Lancashire boiler
All steam engines work on
All steam engines work on
The flow through a nozzle is regarded as
The flow through a nozzle is regarded as
The equivalent evaporation is defined as
The equivalent evaporation is defined as
Locomotive boiler is of the following type
Locomotive boiler is of the following type
In a throttling process
In a throttling process
The Locomotive boiler has
The Locomotive boiler has
The basic job of feed water treatment in boilers is to overcome the problem of
The basic job of feed water treatment in boilers is to overcome the problem of
Which is not the correct statement about moisture in coal?
Which is not the correct statement about moisture in coal?
Which of the following varieties of coals is mostly used in steam boilers?
Which of the following varieties of coals is mostly used in steam boilers?
Benson boiler requires
Benson boiler requires
In an impulse turbine
In an impulse turbine
A single acting steam engine produces __________ power than that of double acting steam engine.
A single acting steam engine produces __________ power than that of double acting steam engine.
The shell diameter and length of locomotive boiler are
The shell diameter and length of locomotive boiler are
The effect of friction on the flow of steam through a nozzle is to
The effect of friction on the flow of steam through a nozzle is to
Carbonization of coal is the process of
Carbonization of coal is the process of
The cylinder condensation or missing quantity may be reduced by
The cylinder condensation or missing quantity may be reduced by
With increase in load, convection superheater has
With increase in load, convection superheater has
100% efficiency of a thermal cycle cannot be achieved because of
100% efficiency of a thermal cycle cannot be achieved because of
The efficiency of reaction turbine is maximum when (where α = Angle made by the absolute velocity ‘V’ at inlet)
The efficiency of reaction turbine is maximum when (where α = Angle made by the absolute velocity ‘V’ at inlet)
Thermal efficiency of well maintained boiler will be of the order
Thermal efficiency of well maintained boiler will be of the order
A device used to heat feed water by utilizing the heat in me exhaust flue gases before leaving through the chimney, is known as
A device used to heat feed water by utilizing the heat in me exhaust flue gases before leaving through the chimney, is known as
The cylindrical shell of a Lancashire boiler has diameter from
The cylindrical shell of a Lancashire boiler has diameter from
Steam turbines are used for
Steam turbines are used for
The fire tubes in, a Coarran and Scottish marine boiler are
The fire tubes in, a Coarran and Scottish marine boiler are
Which of the following is a fire tube boiler?
Which of the following is a fire tube boiler?
The object of producing draught in a boiler is
The object of producing draught in a boiler is
The draught produced by a steam jet issuing from a nozzle placed in the ash-pit under the fire grate of the furnace is called
The draught produced by a steam jet issuing from a nozzle placed in the ash-pit under the fire grate of the furnace is called
The indicated thermal efficiency is defined as the
The indicated thermal efficiency is defined as the
The impulse reaction turbine has its driving force
The impulse reaction turbine has its driving force
The diameter of internal flue tubes of a Lancashire boiler is about _________ that of its shell.
The diameter of internal flue tubes of a Lancashire boiler is about _________ that of its shell.
Which of the following are boiler accessories?
Which of the following are boiler accessories?
In a boiler, feed water supplied per hour is 205 kg while coal fired per hour is 23 kg. The net enthalpy rise per kg of water is 145 kJ. If the calorific valve of the coal is 2050 kJ/kg, then the boiler efficiency will be
In a boiler, feed water supplied per hour is 205 kg while coal fired per hour is 23 kg. The net enthalpy rise per kg of water is 145 kJ. If the calorific valve of the coal is 2050 kJ/kg, then the boiler efficiency will be
Boiler H.P. is defined as the
Boiler H.P. is defined as the
O₂ content in atmospheric air on weight basis is
O₂ content in atmospheric air on weight basis is
A stage, in reaction turbine, is represented by
A stage, in reaction turbine, is represented by
Pick up the wrong statement about water tube boiler in comparison to fire tube boilers
Pick up the wrong statement about water tube boiler in comparison to fire tube boilers
An economiser is installed in a boiler primarily to
An economiser is installed in a boiler primarily to
The diameters of fire tubes and superheater tubes in locomotive boiler are
The diameters of fire tubes and superheater tubes in locomotive boiler are
Sulphur in coal results in
Sulphur in coal results in
A safety valve mainly used with locomotive and marine boilers is
A safety valve mainly used with locomotive and marine boilers is
On Mollier chart, free expansion, or throttling process from high pressure to atmosphere is represented by
On Mollier chart, free expansion, or throttling process from high pressure to atmosphere is represented by
At critical point, i.e. p=225.65 kg/cm², the latent enthalpy of vaporisation is
At critical point, i.e. p=225.65 kg/cm², the latent enthalpy of vaporisation is
Which is not correct statement about pulverized fuel firing?
Which is not correct statement about pulverized fuel firing?
In a reaction turbine, when steam flows through the moving blades,
In a reaction turbine, when steam flows through the moving blades,
A safety valve usually employed with stationary boilers is
A safety valve usually employed with stationary boilers is
