Film boiling occurs at
Film boiling occurs at
De-Laval turbine is a
De-Laval turbine is a
While steam expands in turbines, theoretically the entropy
While steam expands in turbines, theoretically the entropy
In order to reduce the rotor speed of an impulse turbine, the method employed is
In order to reduce the rotor speed of an impulse turbine, the method employed is
In a glass tube type water indicator for a boiler, one end of the tube is connected to water space and the other end is connected to
In a glass tube type water indicator for a boiler, one end of the tube is connected to water space and the other end is connected to
The capacity of induced draft fan compared to forced draft fan in a boiler is
The capacity of induced draft fan compared to forced draft fan in a boiler is
For the same diameter and thickness of tube, a water tube boiler compared to a fire tube boiler has
For the same diameter and thickness of tube, a water tube boiler compared to a fire tube boiler has
The draught produced by a steam jet issuing from a nozzle placed in the chimney is called
The draught produced by a steam jet issuing from a nozzle placed in the chimney is called
Water and sediment in fuel oil can be removed by
Water and sediment in fuel oil can be removed by
The critical pressure ratio for gases is
The critical pressure ratio for gases is
The diameter of fire tube of Cornish boiler compared to its shell is
The diameter of fire tube of Cornish boiler compared to its shell is
A device used to increase the temperature of saturated steam without raising its pressure, is called
A device used to increase the temperature of saturated steam without raising its pressure, is called
The number of flue tubes in Lancashire boiler is
The number of flue tubes in Lancashire boiler is
The biggest size of thermal power unit operating in India is
The biggest size of thermal power unit operating in India is
The velocity of steam at throat of the nozzle is __________ the velocity of sound.
The velocity of steam at throat of the nozzle is __________ the velocity of sound.
An air preheater is installed
An air preheater is installed
A regenerative steam cycle renders
A regenerative steam cycle renders
The theoretical indicator diagram of a simple steam engine is based upon the assumption that
The theoretical indicator diagram of a simple steam engine is based upon the assumption that
In regenerative air preheaters, the heat is transferred
In regenerative air preheaters, the heat is transferred
By compounding the expansion of steam in two or more cylinders, the ratio of expansion
By compounding the expansion of steam in two or more cylinders, the ratio of expansion
The condition of steam in boiler drum is always
The condition of steam in boiler drum is always
Which of the following statement is wrong?
Which of the following statement is wrong?
For maximum discharge through a chimney, the condition is that height of hot gas column producing the draught should be
For maximum discharge through a chimney, the condition is that height of hot gas column producing the draught should be
The efficiency of the plant __________ with the mechanical draught.
The efficiency of the plant __________ with the mechanical draught.
The ratio of the work-done on the blades per kg of steam to the total energy supplied per stage per kg of steam is called
The ratio of the work-done on the blades per kg of steam to the total energy supplied per stage per kg of steam is called
Which of the following statement is correct?
Which of the following statement is correct?
The diameter of internal flue tubes in a Lancashire boiler compared to its shell is
The diameter of internal flue tubes in a Lancashire boiler compared to its shell is
A nozzle is said to be a convergent nozzle
A nozzle is said to be a convergent nozzle
Which of the following statement is correct?
Which of the following statement is correct?
The air pressure at the fuel bed is reduced below that of atmosphere by means of a fan placed at or near the bottom of the chimney to produce a draught. Such a draught is called
The air pressure at the fuel bed is reduced below that of atmosphere by means of a fan placed at or near the bottom of the chimney to produce a draught. Such a draught is called
The bituminous coal is no caking if its carbon content is
The bituminous coal is no caking if its carbon content is
Which of the following boilers is best suited to meet fluctuating demands?
Which of the following boilers is best suited to meet fluctuating demands?
Degree of reaction is defined as the ratio of
Degree of reaction is defined as the ratio of
An economiser _________ the steam raising capacity of a boiler.
An economiser _________ the steam raising capacity of a boiler.
Pick up wrong statement about desired properties of a good fuel
Pick up wrong statement about desired properties of a good fuel
For burning 1 kg of carbon to CO as per chemically correct combustion, amount of air required is
For burning 1 kg of carbon to CO as per chemically correct combustion, amount of air required is
Which of the following is required for a steam condensing plant?
Which of the following is required for a steam condensing plant?
In a steam condenser, the partial pressure of steam and air are 0.06 bar and 0.007 bar respectively. The condenser pressure is
In a steam condenser, the partial pressure of steam and air are 0.06 bar and 0.007 bar respectively. The condenser pressure is
In recuperative air preheaters, the heat is transferred
In recuperative air preheaters, the heat is transferred
Which is not correct statement about the function of furnace?
Which is not correct statement about the function of furnace?
The aim of a compound steam engine is
The aim of a compound steam engine is
Incomplete combustion can be best judged by
Incomplete combustion can be best judged by
When the total heat of steam is h kJ/kg and the sensible heat of feed water is hf1 kJ/kg, then the factor of evaporation is given by
When the total heat of steam is h kJ/kg and the sensible heat of feed water is hf1 kJ/kg, then the factor of evaporation is given by
Which of the following statement is correct?
Which of the following statement is correct?
The function of a piston rod is
The function of a piston rod is
The equivalent evaporation of a boiler is a measure to compare
The equivalent evaporation of a boiler is a measure to compare
Heating of dry steam above saturation temperature is known as
Heating of dry steam above saturation temperature is known as
Blow off cock in a boiler is used to
Blow off cock in a boiler is used to
The chimney draught varies with
The chimney draught varies with
The cylinder dimensions of a compound engine may be designed on the basis of
The cylinder dimensions of a compound engine may be designed on the basis of
When steam after doing work in the cylinder passes into a condenser, the engine is said to be a
When steam after doing work in the cylinder passes into a condenser, the engine is said to be a
The ratio of the workdone on the blades to the energy supplied to the blades, is called
The ratio of the workdone on the blades to the energy supplied to the blades, is called
The velocity of whirl at outlet for an axial discharge turbine is
The velocity of whirl at outlet for an axial discharge turbine is
If partial pressure of air and steam be ‘pa’ and ‘ps’ respectively in a condenser, then according to Dalton's law, the pressure in condenser is equal to
If partial pressure of air and steam be ‘pa’ and ‘ps’ respectively in a condenser, then according to Dalton's law, the pressure in condenser is equal to
The reheat factor depends upon
The reheat factor depends upon
Lancashire boiler has __________ internal flue tubes.
Lancashire boiler has __________ internal flue tubes.
The critical pressure ratio for initially dry saturated steam is
The critical pressure ratio for initially dry saturated steam is
Hard coke is used in
Hard coke is used in
The effect of super-saturation is that the
The effect of super-saturation is that the
In water tube boilers
In water tube boilers
Which of the following statement indicates the difference between Cornish boiler and Lancashire boiler?
Which of the following statement indicates the difference between Cornish boiler and Lancashire boiler?
Lancashire boiler is
Lancashire boiler is
For water, at pressures below atmospheric;
For water, at pressures below atmospheric;
Spontaneous combustion is a phenomenon in which
Spontaneous combustion is a phenomenon in which
Which of the following statement is wrong?
Which of the following statement is wrong?
In an impulse reaction turbine, the pressure drops gradually and continuously over
In an impulse reaction turbine, the pressure drops gradually and continuously over
The factor of evaporation for all boilers is always
The factor of evaporation for all boilers is always
Relative percentage of heat absorbed through the heat transfer of
(i) Furnace water wall
(ii) Boiler tank
(iii) Superheater
(iv) Economizer
(v) Air-heater of a typical boiler of 200 MW capacity would be of the order of
Relative percentage of heat absorbed through the heat transfer of
(i) Furnace water wall
(ii) Boiler tank
(iii) Superheater
(iv) Economizer
(v) Air-heater of a typical boiler of 200 MW capacity would be of the order of
The efficiency of steam turbines may be improved by
The efficiency of steam turbines may be improved by
Cochran boiler is a
Cochran boiler is a
In cross compounding, the cylinders are arranged
In cross compounding, the cylinders are arranged
The steam temperature with increase in load in case of a boiler fitted with radiation superheater
The steam temperature with increase in load in case of a boiler fitted with radiation superheater
Green coal, in order to be burnt, must be
Green coal, in order to be burnt, must be
Which of the following is a water tube boiler?
Which of the following is a water tube boiler?
If a steam sample is nearly in dry condition, then its dryness fraction can be most accurately determined by
If a steam sample is nearly in dry condition, then its dryness fraction can be most accurately determined by
The flow of steam is supersonic
The flow of steam is supersonic
Which of the following statement is wrong?
Which of the following statement is wrong?
A packaged boiler is one in which various parts like firing equipment, fans, feed pumps and automatic controls are
A packaged boiler is one in which various parts like firing equipment, fans, feed pumps and automatic controls are
The friction in the nozzle __________ exit velocity of steam.
The friction in the nozzle __________ exit velocity of steam.
The actual vacuum in a condenser is equal to
The actual vacuum in a condenser is equal to
In accelerated circulation type boiler
In accelerated circulation type boiler
In forced circulation type boiler
In forced circulation type boiler
For a Parson's reaction turbine, if α₁ and α₂ are fixed blade angles at inlet and exit respectively and β₁ and β₂ are the moving blade angles at entrance and exit respectively, then
For a Parson's reaction turbine, if α₁ and α₂ are fixed blade angles at inlet and exit respectively and β₁ and β₂ are the moving blade angles at entrance and exit respectively, then
The ratio of the temperature rise of cooling water to the vacuum temperature minus inlet cooling water temperature is called
The ratio of the temperature rise of cooling water to the vacuum temperature minus inlet cooling water temperature is called
The heat loss in a boiler takes place in the form of
The heat loss in a boiler takes place in the form of
Locomotive type' boiler is
Locomotive type' boiler is
There is always some steam left in the clearance space from the previous stroke. This steam left in the clearance space is called
There is always some steam left in the clearance space from the previous stroke. This steam left in the clearance space is called
The ratio of the useful heat drop to the isentropic heat drop is called
The ratio of the useful heat drop to the isentropic heat drop is called
Which of the following statement is correct?
Which of the following statement is correct?
The change in internal energy in steam engines equals to
The change in internal energy in steam engines equals to
Desecration of feed water is carried out because it reduces
Desecration of feed water is carried out because it reduces
Which of the following statement is wrong?
Which of the following statement is wrong?
The velocity of flue gases (V) through the chimney under a static draught of (H') metres is given by
The velocity of flue gases (V) through the chimney under a static draught of (H') metres is given by
The Parsons' reaction turbine has
The Parsons' reaction turbine has
The critical pressure gives the velocity of steam at the throat
The critical pressure gives the velocity of steam at the throat
The value of diagram factor depends upon
The value of diagram factor depends upon
Which of the following statement is correct?
Which of the following statement is correct?
The clearance in the engine cylinder
The clearance in the engine cylinder
Which of the following is a water tube boiler?
Which of the following is a water tube boiler?
The average value of diagram factor lies between
The average value of diagram factor lies between
