In a boiler, the heat is lost
In a boiler, the heat is lost
The pressure of steam in the engine cylinder at the beginning of the stroke is ________ the boiler pressure.
The pressure of steam in the engine cylinder at the beginning of the stroke is ________ the boiler pressure.
The overall efficiency of thermal power plant is
The overall efficiency of thermal power plant is
The working pressure range for a LaMont boiler is
The working pressure range for a LaMont boiler is
Adiabatic process is
Adiabatic process is
The feed check valve is used in order to
The feed check valve is used in order to
A single stage impulse turbine with a diameter of 1.2 m runs at 3000 r.p.m. If the blade speed ratio is 0.42, then the inlet velocity of steam will be
A single stage impulse turbine with a diameter of 1.2 m runs at 3000 r.p.m. If the blade speed ratio is 0.42, then the inlet velocity of steam will be
Mechanical equivalent of heat for 1 kcal or Joule's equivalent is equal to
Mechanical equivalent of heat for 1 kcal or Joule's equivalent is equal to
The draught may be produced by a
The draught may be produced by a
The temperature of flue gases at air heater outlet should be
The temperature of flue gases at air heater outlet should be
The diagram factor is the ratio of the
The diagram factor is the ratio of the
The principal function of a stop valve is to
The principal function of a stop valve is to
Duplex feed pumps are used in small steam boilers. These operate on the principle of
Duplex feed pumps are used in small steam boilers. These operate on the principle of
The critical pressure ratio (p₂/p₁) is given by
The critical pressure ratio (p₂/p₁) is given by
The critical pressure ratio for initially wet steam is
The critical pressure ratio for initially wet steam is
The value of the reheat factor varies from
The value of the reheat factor varies from
A double acting steam engine with a cylinder diameter of 190 mm and a stroke of 300 mm has a cut-off of 0.35. The expansion ratio for this engine is nearly
A double acting steam engine with a cylinder diameter of 190 mm and a stroke of 300 mm has a cut-off of 0.35. The expansion ratio for this engine is nearly
The draught in locomotive boilers is produced by a
The draught in locomotive boilers is produced by a
By compounding the expansion of steam in two or more cylinders, the length of stroke
By compounding the expansion of steam in two or more cylinders, the length of stroke
The critical pressure ratio for initially superheated steam is __________ as compared to initially dry saturated steam.
The critical pressure ratio for initially superheated steam is __________ as compared to initially dry saturated steam.
The fire tubes in a Locomotive boiler has __________ diameter.
The fire tubes in a Locomotive boiler has __________ diameter.
The expansion of steam in a nozzle follows
The expansion of steam in a nozzle follows
Steam in water tube boiler as compared to fire tube boiler
Steam in water tube boiler as compared to fire tube boiler
The function of an eccentric rod is
The function of an eccentric rod is
The action of steam in a steam turbine is
The action of steam in a steam turbine is
Which of the following coals has the highest calorific value?
Which of the following coals has the highest calorific value?
In a steam engine, superheated steam from the boiler is fed into the steam chest at a pressure of
In a steam engine, superheated steam from the boiler is fed into the steam chest at a pressure of
A supercritical boiler is one that operates above the pressure and temperature of following values
A supercritical boiler is one that operates above the pressure and temperature of following values
The compounding of turbines is done in order to
The compounding of turbines is done in order to
The maximum efficiency of a reaction turbine is
The maximum efficiency of a reaction turbine is
The reheat factor is the ratio of the
The reheat factor is the ratio of the
The number of water level indicators in a boiler are generally __________ in number.
The number of water level indicators in a boiler are generally __________ in number.
The function of a flywheel is
The function of a flywheel is
Expanding steam to a very low pressure (high vacuum) in steam engines is
Expanding steam to a very low pressure (high vacuum) in steam engines is
The function of a piston in a steam engine is
The function of a piston in a steam engine is
Thermal equilibrium means that the flow of steam is
Thermal equilibrium means that the flow of steam is
The high pressure and low pressure cylinders in a Woolf type compound engine are regarded as having cranks
The high pressure and low pressure cylinders in a Woolf type compound engine are regarded as having cranks
1 kg.m is equal to
1 kg.m is equal to
In turbines, the fluid undergoes a continuous steady flow process and the speed of flow is
In turbines, the fluid undergoes a continuous steady flow process and the speed of flow is
In a nozzle, whole frictional loss is assumed to occur between
In a nozzle, whole frictional loss is assumed to occur between
One kilowatt-hour energy is equivalent to
One kilowatt-hour energy is equivalent to
A _________ in a boiler is used to put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit.
A _________ in a boiler is used to put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit.
Which of the following gases has the highest calorific value?
Which of the following gases has the highest calorific value?
In reaction turbines, the axial thrust is due to
In reaction turbines, the axial thrust is due to
The purpose of governing in steam turbines is to
The purpose of governing in steam turbines is to
The main object of a boiler trial is
The main object of a boiler trial is
The radius of a dished head is taken approximately as
The radius of a dished head is taken approximately as
Superheating of steam is done at
Superheating of steam is done at
The isentropic enthalpy drop in moving blade is two-third of the isentropic enthalpy drop in fixed blades of a turbine. The degree of reaction will be
The isentropic enthalpy drop in moving blade is two-third of the isentropic enthalpy drop in fixed blades of a turbine. The degree of reaction will be
Stage efficiency is also known as
Stage efficiency is also known as
Gradually increasing temperature of flue gases at inlet to chimney for given steam outputs is an indication of
Gradually increasing temperature of flue gases at inlet to chimney for given steam outputs is an indication of
The efficiency of a pressure-velocity compounded impulse turbine is __________ as compared to pressure compounded impulse turbine.
The efficiency of a pressure-velocity compounded impulse turbine is __________ as compared to pressure compounded impulse turbine.
In a uniflow engine
In a uniflow engine
The best suited coal for chain or traveling grate stoker boiler is
The best suited coal for chain or traveling grate stoker boiler is
The ratio of the clearance volume to the swept volume is called
The ratio of the clearance volume to the swept volume is called
Sublimation region is the region where
Sublimation region is the region where
A device used to put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit, is called
A device used to put off fire in the furnace of the boiler when the level of water in the boiler falls to an unsafe limit, is called
The function of a cross-head is to guide motion of the _________ and to prevent it from bending.
The function of a cross-head is to guide motion of the _________ and to prevent it from bending.
The effect of bleeding is that
The effect of bleeding is that
The behavior of coal in a furnace is determined by
The behavior of coal in a furnace is determined by
Water tube boilers are
Water tube boilers are
Blading efficiency is also known as
Blading efficiency is also known as
An air preheater
An air preheater
The average operating pressure of Benson boiler is
The average operating pressure of Benson boiler is
The high pressure and low pressure cylinders in a receiver type compound engine are regarded as having cranks
The high pressure and low pressure cylinders in a receiver type compound engine are regarded as having cranks
The pressure of feed water has to be raised before its entry into the boiler. The pressure is raised by a device known as
The pressure of feed water has to be raised before its entry into the boiler. The pressure is raised by a device known as
A nozzle is said to be a divergent nozzle
A nozzle is said to be a divergent nozzle
In a 50% reaction turbine stage, tangential component of absolute velocity at rotor inlet is 537 m/s and the blade velocity is 454 m/s. The power output in kW of steam will be
In a 50% reaction turbine stage, tangential component of absolute velocity at rotor inlet is 537 m/s and the blade velocity is 454 m/s. The power output in kW of steam will be
The rate of steam produced in Benson boiler is
The rate of steam produced in Benson boiler is
A valve installed between the boiler and the feed pump is
A valve installed between the boiler and the feed pump is
In a reaction turbine
In a reaction turbine
Which type of boiler can meet rapid changes of load?
Which type of boiler can meet rapid changes of load?
The supersaturated flow of steam through a nozzle as compared to a stable flow, the available heat drop
The supersaturated flow of steam through a nozzle as compared to a stable flow, the available heat drop
Which of the following is correct? (Where pa = Actual mean effective pressure, pm = Theoretical mean effective pressure, and K = Diagram factor)
Which of the following is correct? (Where pa = Actual mean effective pressure, pm = Theoretical mean effective pressure, and K = Diagram factor)
Ultimate analysis of fuel is determination of percentage of
Ultimate analysis of fuel is determination of percentage of
Which of the following is not a boiler mounting?
Which of the following is not a boiler mounting?
Besides mean effective pressure, the data required to determine the indicated power of an engine include
Besides mean effective pressure, the data required to determine the indicated power of an engine include
Fire tube boilers are
Fire tube boilers are
At which pressure the properties of water and steam become identical
At which pressure the properties of water and steam become identical
An impulse turbine as compared to a reaction turbine, for a given power has _________ row of blades.
An impulse turbine as compared to a reaction turbine, for a given power has _________ row of blades.
A compound steam engine in which piston rods of high pressure and low pressure cylinders ' are attached to two different cranks set at 180° to each other, is called
A compound steam engine in which piston rods of high pressure and low pressure cylinders ' are attached to two different cranks set at 180° to each other, is called
Which is not correct statement about effect of sulphur in fuel?
Which is not correct statement about effect of sulphur in fuel?
Willian's law states that the steam consumption per hour provided with a throttled governor is proportional to (where I.P. = Indicated power)
Willian's law states that the steam consumption per hour provided with a throttled governor is proportional to (where I.P. = Indicated power)
The shell of the Cochran boiler is made hemispherical
The shell of the Cochran boiler is made hemispherical
The function of a safety valve is
The function of a safety valve is
Proximate analysis of fuel is determination of percentage of
Proximate analysis of fuel is determination of percentage of
The relative heat absorption for successively added equal areas of boiler convection heating surfaces
The relative heat absorption for successively added equal areas of boiler convection heating surfaces
In forced circulation steam boilers, the force is applied
In forced circulation steam boilers, the force is applied
The heat balance sheet for the boiler shows the
The heat balance sheet for the boiler shows the
Boiler parameters are expressed by
Boiler parameters are expressed by
The high pressure and low pressure cylinders in a Tandem type compound engine are regarded as having cranks
The high pressure and low pressure cylinders in a Tandem type compound engine are regarded as having cranks
A compound steam engine in which piston rods of high pressure and low pressure cylinders are attached to two different cranks set at 90° to each other, is called
A compound steam engine in which piston rods of high pressure and low pressure cylinders are attached to two different cranks set at 90° to each other, is called
Pulverized fuel is used for
Pulverized fuel is used for
The ratio of the volume at cut-off to the swept volume is called
The ratio of the volume at cut-off to the swept volume is called
The fittings mounted on the boiler for its proper and safe functioning is a
The fittings mounted on the boiler for its proper and safe functioning is a
Which of the following boiler is best suited to meet the fluctuating demand of steam?
Which of the following boiler is best suited to meet the fluctuating demand of steam?
The blade friction in the impulse turbine reduces the velocity of steam by __________ while it passes over the blades.
The blade friction in the impulse turbine reduces the velocity of steam by __________ while it passes over the blades.
The fire tubes in a Cochran boiler usually have _________ diameter.
The fire tubes in a Cochran boiler usually have _________ diameter.
The mechanical draught _________ with the amount of smoke.
The mechanical draught _________ with the amount of smoke.
The friction present between the steam and the nozzle surfaces reduces the heat drop by
The friction present between the steam and the nozzle surfaces reduces the heat drop by
