Cut-off ratio is the ratio of
Cut-off ratio is the ratio of
Reheating of steam under ideal conditions takes place at constant
Reheating of steam under ideal conditions takes place at constant
Sulphur content of fuels is very important to the plant operators because it
Sulphur content of fuels is very important to the plant operators because it
A vessel into which the steam is exhausted and condensed after doing work in an engine cylinder or turbine is known as
A vessel into which the steam is exhausted and condensed after doing work in an engine cylinder or turbine is known as
In a receiver type compound engine, the high pressure and low pressure cylinders
In a receiver type compound engine, the high pressure and low pressure cylinders
The difference of supersaturated temperature and saturation temperature at that pressure is called
The difference of supersaturated temperature and saturation temperature at that pressure is called
The effect of friction in the nozzle __________ dryness fraction of steam.
The effect of friction in the nozzle __________ dryness fraction of steam.
When the speed of the engine is controlled by means of a valve in a steam pipe, which regulates the pressure of steam entering the engine, then the governing is known as
When the speed of the engine is controlled by means of a valve in a steam pipe, which regulates the pressure of steam entering the engine, then the governing is known as
The length of Lancashire boiler varies from
The length of Lancashire boiler varies from
The diameter of Cornish boiler varies from
The diameter of Cornish boiler varies from
Expansion ratio is the ratio of
Expansion ratio is the ratio of
The forced circulation of water does not take place in
The forced circulation of water does not take place in
Throttle governing of steam engines is a method of controlling the engine output by varying
Throttle governing of steam engines is a method of controlling the engine output by varying
Fire tube boilers are those in which
Fire tube boilers are those in which
The expansion of steam, as it flows over the blades in reaction turbine, represents
The expansion of steam, as it flows over the blades in reaction turbine, represents
Gusset stays in a boiler are provided to
Gusset stays in a boiler are provided to
The length of shell of a Locomotive boiler is
The length of shell of a Locomotive boiler is
The height of chimney in a power plant is governed by
The height of chimney in a power plant is governed by
Evaporative capacity of boiler is expressed as
Evaporative capacity of boiler is expressed as
When the circulation of water, in a boiler, is by a centrifugal pump, then the boiler is known as
When the circulation of water, in a boiler, is by a centrifugal pump, then the boiler is known as
The ratio of heat utilized to produce steam and the heat liberated in furnace is known as
The ratio of heat utilized to produce steam and the heat liberated in furnace is known as
The ratio of the actual vacuum to the ideal vacuum in a condenser is called
The ratio of the actual vacuum to the ideal vacuum in a condenser is called
A compound steam engine in which the high pressure and low pressure cylinders have common piston rod, is called
A compound steam engine in which the high pressure and low pressure cylinders have common piston rod, is called
In a Tandem type compound engine, the high pressure and low pressure cylinders
In a Tandem type compound engine, the high pressure and low pressure cylinders
The function of a valve rod is
The function of a valve rod is
Heating value of fuel used is as on fired basis. If it is reported for dry or moisture free fuel, then latter should be multiplied by the following factor to correct for as fired value
Heating value of fuel used is as on fired basis. If it is reported for dry or moisture free fuel, then latter should be multiplied by the following factor to correct for as fired value
Clearance ratio is the ratio of
Clearance ratio is the ratio of
Fire tube boilers are limited to a maximum design working pressure of
Fire tube boilers are limited to a maximum design working pressure of
Rateau turbine is
Rateau turbine is
Steam exhaust from high pressure turbine is reheated in
Steam exhaust from high pressure turbine is reheated in
Curtis turbine is a
Curtis turbine is a
Lancashire boiler is used where working pressure and power required are
Lancashire boiler is used where working pressure and power required are
In order to obtain superheated steam, a superheater is added in an existing boiler. As as result, furnace vacuum will
In order to obtain superheated steam, a superheater is added in an existing boiler. As as result, furnace vacuum will
The process of draining steam from the turbine, at certain points during its expansion and using this steam for heating the feed water in feed water heaters and then supplying it to the boiler is known as
The process of draining steam from the turbine, at certain points during its expansion and using this steam for heating the feed water in feed water heaters and then supplying it to the boiler is known as
The fusible plug in small boilers is located
The fusible plug in small boilers is located
The size of a boiler drum in pulverized fuel fired boiler, as its size and capacity, (steam pressure and flow ratings) increase
The size of a boiler drum in pulverized fuel fired boiler, as its size and capacity, (steam pressure and flow ratings) increase
During polytropic process
During polytropic process
In a reaction turbine when the degree of reaction is zero, then there is
In a reaction turbine when the degree of reaction is zero, then there is
A safety valve in a locomotive starts leaking. The leaking medium will be
A safety valve in a locomotive starts leaking. The leaking medium will be
Water tube boilers are those in which
Water tube boilers are those in which
The shell diameter of a Locomotive boiler is
The shell diameter of a Locomotive boiler is
The crown of the fire box is made hemispherical in order to
The crown of the fire box is made hemispherical in order to
Feed water conditioning in thermal power plants in done to
Feed water conditioning in thermal power plants in done to
Natural water circulation, by convection in water tube boilers, with increase in pressure of boiler
Natural water circulation, by convection in water tube boilers, with increase in pressure of boiler
In a velocity compounded impulse turbine, when steam flows through the second row of moving blades,
In a velocity compounded impulse turbine, when steam flows through the second row of moving blades,
The discharge is __________ at critical pressure.
The discharge is __________ at critical pressure.
On Millier chart, the constant pressure lines
On Millier chart, the constant pressure lines
The latent heat of steam with increase of pressure
The latent heat of steam with increase of pressure
A binary vapor plant consists of
A binary vapor plant consists of
The water tubes in a simple vertical boiler are
The water tubes in a simple vertical boiler are
Pick up the wrong statement about critical condition of steam
Pick up the wrong statement about critical condition of steam
It is required to produce large amount of steam at low pressure. Which boiler should be used?
It is required to produce large amount of steam at low pressure. Which boiler should be used?
The fire tubes in a Cochran boiler are
The fire tubes in a Cochran boiler are
The dry saturated steam at very high pressure (150200 kg/cm²) when throttled to atmosphere will become
The dry saturated steam at very high pressure (150200 kg/cm²) when throttled to atmosphere will become
When the cross-section of a nozzle __________ continuously from entrance to exit, it is called a convergent nozzle.
When the cross-section of a nozzle __________ continuously from entrance to exit, it is called a convergent nozzle.
The critical pressure ratio is given by (where p₁ = Initial pressure of steam, and p₂ = Pressure of steam at throat or critical pressure)
The critical pressure ratio is given by (where p₁ = Initial pressure of steam, and p₂ = Pressure of steam at throat or critical pressure)
The safety valve on boiler drum compared to safety valve on superheater is set at
The safety valve on boiler drum compared to safety valve on superheater is set at
The diameter of superheated tubes in a locomotive boiler is
The diameter of superheated tubes in a locomotive boiler is
In a Woolf type compound engine, the high pressure and low pressure cylinders
In a Woolf type compound engine, the high pressure and low pressure cylinders
Cut-off governing of steam engines is a method of controlling the engine output by varying
Cut-off governing of steam engines is a method of controlling the engine output by varying
The discharge of steam in a convergent-divergent nozzle __________ after the throat (i.e. in the divergent portion of the nozzle)
The discharge of steam in a convergent-divergent nozzle __________ after the throat (i.e. in the divergent portion of the nozzle)
Fusible plug for boilers is made of fusible metal containing tin, lead, and
Fusible plug for boilers is made of fusible metal containing tin, lead, and
The ratio of the isentropic heat drop to the heat supplied, is called
The ratio of the isentropic heat drop to the heat supplied, is called
Equivalent evaporation is the amount of water evaporated in a boiler from and at
Equivalent evaporation is the amount of water evaporated in a boiler from and at
When the circulation of water, in a boiler, is by convection currents which are set up during the heating of water, then the boiler is known as
When the circulation of water, in a boiler, is by convection currents which are set up during the heating of water, then the boiler is known as
In case of non-condensing steam engines, the pressure of steam in the cylinder during exhaust stroke is _________ the condenser pressure.
In case of non-condensing steam engines, the pressure of steam in the cylinder during exhaust stroke is _________ the condenser pressure.
The ratio of brake power to the indicated power is known as
The ratio of brake power to the indicated power is known as
The three "Ts" for good combustion are
The three "Ts" for good combustion are
The difference between Cornish boiler and Lancashire boiler is that
The difference between Cornish boiler and Lancashire boiler is that
The numbers of fire tubes in a Cochran boiler are
The numbers of fire tubes in a Cochran boiler are
The length of Cornish boiler varies from
The length of Cornish boiler varies from
Boilers, Engines, Nozzles and Turbines Objective Questions and Answers pdf:- 101. The difference between cornish boiler and lancashire boiler is that
Boilers, Engines, Nozzles and Turbines Objective Questions and Answers pdf:- 101. The difference between cornish boiler and lancashire boiler is that
Parson's reaction turbine is a __________ reaction turbine.
Parson's reaction turbine is a __________ reaction turbine.
The specific volume of steam with increase in pressure decreases
The specific volume of steam with increase in pressure decreases
The rate of discharge through the nozzle __________ when the exit pressure is gradually reduced.
The rate of discharge through the nozzle __________ when the exit pressure is gradually reduced.
Steam engine operates on
Steam engine operates on
In a De-Laval nozzle expanding superheated steam from 10 bar to 0.1 bar, the pressure at the minimum cross-section (i. e. pressure at throat, p₂) will be
In a De-Laval nozzle expanding superheated steam from 10 bar to 0.1 bar, the pressure at the minimum cross-section (i. e. pressure at throat, p₂) will be
In a compound steam engine, the first stage of expansion is carried out in a high pressure cylinder whereas the last expansion is completed in low pressure cylinder. The diameter of high pressure cylinder is _________ the low pressure cylinder.
In a compound steam engine, the first stage of expansion is carried out in a high pressure cylinder whereas the last expansion is completed in low pressure cylinder. The diameter of high pressure cylinder is _________ the low pressure cylinder.
In an impulse turbine, steam expands
In an impulse turbine, steam expands
Fire tube boilers are limited to a maximum working pressure of
Fire tube boilers are limited to a maximum working pressure of
Water at pressure of 4 kg/cm² and 160°C temperature when exposed to atmosphere will
Water at pressure of 4 kg/cm² and 160°C temperature when exposed to atmosphere will
Which of the following statement is correct for steam turbines as compared to reciprocating steam engines?
Which of the following statement is correct for steam turbines as compared to reciprocating steam engines?
Heating wet steam at constant temperature is heating it at constant
Heating wet steam at constant temperature is heating it at constant
Locomotive boiler is a
Locomotive boiler is a
An ideal regenerative cycle is
An ideal regenerative cycle is
Parson's turbine is a
Parson's turbine is a
The actual power supplied by the engine crankshaft is called
The actual power supplied by the engine crankshaft is called
The diameter of a cylindrical shell of a Scotch marine boiler varies from
The diameter of a cylindrical shell of a Scotch marine boiler varies from
A device in which some portion of waste heat of flue gases is recovered to heat the air before it passes to the furnace for combustion purpose, is known as
A device in which some portion of waste heat of flue gases is recovered to heat the air before it passes to the furnace for combustion purpose, is known as
The density of supersaturated steam is about __________ that of the ordinary saturated vapor at the corresponding pressure.
The density of supersaturated steam is about __________ that of the ordinary saturated vapor at the corresponding pressure.
Which of the following is steam dial?
Which of the following is steam dial?
The saturation temperature of steam with increase in pressure increases
The saturation temperature of steam with increase in pressure increases
The pressure compounded impulse turbine as compared to velocity compounded turbine require __________ number of stages.
The pressure compounded impulse turbine as compared to velocity compounded turbine require __________ number of stages.
Multi-stage steam turbines are of the
Multi-stage steam turbines are of the
The amount of water evaporated from feed water at _________ into dry and saturated steam at 100° C at normal atmospheric pressure is called equivalent evaporation from and at 100° C.
The amount of water evaporated from feed water at _________ into dry and saturated steam at 100° C at normal atmospheric pressure is called equivalent evaporation from and at 100° C.
The dry saturated steam at very low pressure, (510 kg/cm²) when throttled to atmosphere will become
The dry saturated steam at very low pressure, (510 kg/cm²) when throttled to atmosphere will become
The increase in pressure
The increase in pressure
The pressure of reheat steam after passing through reheater compared to inlet condition is
The pressure of reheat steam after passing through reheater compared to inlet condition is
Equivalent evaporation of water is the evaporation for a feed water supply at 100°C
Equivalent evaporation of water is the evaporation for a feed water supply at 100°C
The high pressure boiler is one, which produces steam at a pressure more than
The high pressure boiler is one, which produces steam at a pressure more than
The stage efficiency (ηS) is given by (where ηB = Blading efficiency, and ηN = Nozzle efficiency)
The stage efficiency (ηS) is given by (where ηB = Blading efficiency, and ηN = Nozzle efficiency)
