The pressure of a gas in terms of its mean kinetic energy per unit volume 'E' is equal to
The pressure of a gas in terms of its mean kinetic energy per unit volume 'E' is equal to
Absolute zero pressure will occur
Absolute zero pressure will occur
The heat and work are mutually convertible. This statement is called __________ law of thermodynamics.
The heat and work are mutually convertible. This statement is called __________ law of thermodynamics.
A process, in which the temperature of the working substance remains constant during its expansion or compression, is called
A process, in which the temperature of the working substance remains constant during its expansion or compression, is called
The oxygen atom is ________ times heavier than the hydrogen atom.
The oxygen atom is ________ times heavier than the hydrogen atom.
The same volume of all gases would represent their
The same volume of all gases would represent their
The index of compression ‘n’ tends to reach ratio of specific heats ‘y’ when
The index of compression ‘n’ tends to reach ratio of specific heats ‘y’ when
The gas turbine cycle with regenerator improves
The gas turbine cycle with regenerator improves
A cycle consisting of two adiabatic and two constant pressure processes is known as
A cycle consisting of two adiabatic and two constant pressure processes is known as
The condition for the reversibility of a cycle is
The condition for the reversibility of a cycle is
Calorie is a measure of
Calorie is a measure of
If value of n is infinitely large in a polytropic process pVn = C, then the process is known as constant
If value of n is infinitely large in a polytropic process pVn = C, then the process is known as constant
One kg of ethylene (C2H4) requires 2 kg of oxygen and produces 22/7 kg of carbon dioxide and __________ kg of water or steam.
One kg of ethylene (C2H4) requires 2 kg of oxygen and produces 22/7 kg of carbon dioxide and __________ kg of water or steam.
Which law states that the specific heat of a gas remains constant at all temperatures and pressures?
Which law states that the specific heat of a gas remains constant at all temperatures and pressures?
Heat and work are
Heat and work are
For which of the following substances, the gas laws can be used with minimum error
For which of the following substances, the gas laws can be used with minimum error
The behavior of super-heated vapour is similar to that of
The behavior of super-heated vapour is similar to that of
According to Kelvin-Planck's statement of second law of thermodynamics,
According to Kelvin-Planck's statement of second law of thermodynamics,
The universal gas constant (or molar constant) of a gas is the product of
The universal gas constant (or molar constant) of a gas is the product of
When cut-off ratio is __________ the efficiency of Diesel cycle approaches to Otto cycle efficiency.
When cut-off ratio is __________ the efficiency of Diesel cycle approaches to Otto cycle efficiency.
One kg of carbon produces __________ kg of carbon dioxide.
One kg of carbon produces __________ kg of carbon dioxide.
The pressure exerted by an ideal gas is ________ of the kinetic energy of all the molecules contained in a unit volume of gas.
The pressure exerted by an ideal gas is ________ of the kinetic energy of all the molecules contained in a unit volume of gas.
Reversed joule cycle is called
Reversed joule cycle is called
In a free expansion process
In a free expansion process
A cycle consisting of two constant pressure and two isentropic processes is known as
A cycle consisting of two constant pressure and two isentropic processes is known as
According to Kelvin-Planck’s statement of second law of thermodynamics,
According to Kelvin-Planck’s statement of second law of thermodynamics,
In a Carnot cycle, heat is transferred at
In a Carnot cycle, heat is transferred at
The air standard efficiency of an Otto cycle is given by (where r = Compression ratio, and γ = Ratio of specific heats)
The air standard efficiency of an Otto cycle is given by (where r = Compression ratio, and γ = Ratio of specific heats)
When a gas is heated, change takes place in
When a gas is heated, change takes place in
Otto cycle consists of
Otto cycle consists of
Carnot cycle consists of
Carnot cycle consists of
The efficiency of Diesel cycle with decrease in cut-off
The efficiency of Diesel cycle with decrease in cut-off
The volumetric or molar specific heat at constant pressure is the product of
The volumetric or molar specific heat at constant pressure is the product of
The __________ states that change of internal energy of a perfect gas is directly proportional to the change of temperature.
The __________ states that change of internal energy of a perfect gas is directly proportional to the change of temperature.
Carnot cycle efficiency depends upon
Carnot cycle efficiency depends upon
One molecule of oxygen is __________ times heavier than the hydrogen atom.
One molecule of oxygen is __________ times heavier than the hydrogen atom.
The fuel mostly used in blast furnace for extracting pig iron from iron ores is
The fuel mostly used in blast furnace for extracting pig iron from iron ores is
One Joule (J) is equal to
One Joule (J) is equal to
Select the wrong statement
Select the wrong statement
During throttling process
During throttling process
In an ideal gas turbine plant, it is assumed that the compression and expansion processes are
In an ideal gas turbine plant, it is assumed that the compression and expansion processes are
The fuel mostly used in cement industry and in metallurgical processes is
The fuel mostly used in cement industry and in metallurgical processes is
Stirling cycle consists of
Stirling cycle consists of
For the constant pressure and heat input, the air standard efficiency of gas power cycle is in the order
For the constant pressure and heat input, the air standard efficiency of gas power cycle is in the order
Which of the following statement is correct?
Which of the following statement is correct?
A sudden fall in the barometer reading is a sign of approaching
A sudden fall in the barometer reading is a sign of approaching
Thermal power plant works on
Thermal power plant works on
Which of the following statement is incorrect?
Which of the following statement is incorrect?
If heat be exchanged in a reversible manner, which of the following property of the working substance will change accordingly
If heat be exchanged in a reversible manner, which of the following property of the working substance will change accordingly
In an isothermal process, the internal energy
In an isothermal process, the internal energy
The heat energy stored in the gas and used for raising the temperature of the gas is known as
The heat energy stored in the gas and used for raising the temperature of the gas is known as
When gas is heated at constant pressure, the heat supplied is utilized in
When gas is heated at constant pressure, the heat supplied is utilized in
Work-done during adiabatic expansion is given by (where p1 v1, T1 = Pressure, volume and temperature for the initial condition of gas, p2, v2, T2 = Corresponding values for the final condition of gas, R = Gas constant, and γ = Ratio of specific heats)
Work-done during adiabatic expansion is given by (where p1 v1, T1 = Pressure, volume and temperature for the initial condition of gas, p2, v2, T2 = Corresponding values for the final condition of gas, R = Gas constant, and γ = Ratio of specific heats)
If a certain amount of dry ice is mixed with same amount of water at 80°C, the final temperature of mixture will be
If a certain amount of dry ice is mixed with same amount of water at 80°C, the final temperature of mixture will be
If both Stirling and Carnot cycles operate within the same temperature limits, then efficiency of Stirling cycle as compared to Carnot cycle
If both Stirling and Carnot cycles operate within the same temperature limits, then efficiency of Stirling cycle as compared to Carnot cycle
The heat flows from a cold body to a hot body with the aid of an external source. This statement is given by
The heat flows from a cold body to a hot body with the aid of an external source. This statement is given by
The hard coke is obtained when carbonization of coal is carried out at
The hard coke is obtained when carbonization of coal is carried out at
On weight basis, air contains following parts of oxygen
On weight basis, air contains following parts of oxygen
The ideal efficiency of a Brayton cycle without regeneration, with increase in pressure ratio will
The ideal efficiency of a Brayton cycle without regeneration, with increase in pressure ratio will
Energy can neither be created nor destroyed, but it can be transformed from one form to another. This statement is known as
Energy can neither be created nor destroyed, but it can be transformed from one form to another. This statement is known as
Universal gas constant is defined as equal to product of the molecular weight of the gas and
Universal gas constant is defined as equal to product of the molecular weight of the gas and
The entropy __________ in an irreversible cyclic process.
The entropy __________ in an irreversible cyclic process.
A gas is compressed in a cylinder by a movable piston to a volume one half its original volume. During the process 300 kJ heat left the gas and internal energy remained same. The work done on gas in Nm will be
A gas is compressed in a cylinder by a movable piston to a volume one half its original volume. During the process 300 kJ heat left the gas and internal energy remained same. The work done on gas in Nm will be
The compression ratio for Diesel engines is
The compression ratio for Diesel engines is
One kg of carbon produces ________ kg of carbon dioxide.
One kg of carbon produces ________ kg of carbon dioxide.
Work done is zero for the following process
Work done is zero for the following process
Which of the following statement is correct?
Which of the following statement is correct?
The unit of energy is S. I. units is
The unit of energy is S. I. units is
According to kinetic theory of gases, the velocity of molecules __________ with the increase in temperature.
According to kinetic theory of gases, the velocity of molecules __________ with the increase in temperature.
Superheated vapour behaves
Superheated vapour behaves
The value of gas constant (R) in S. I. units is
The value of gas constant (R) in S. I. units is
Which of the following statement is correct according to Clausis statement of second law of thermodynamics?
Which of the following statement is correct according to Clausis statement of second law of thermodynamics?
1 kgf/cm² is equal to
1 kgf/cm² is equal to
The expansion ratio (r) is the ratio of (where v1 = Volume at the beginning of expansion, and v2 = Volume at the end of expansion)
The expansion ratio (r) is the ratio of (where v1 = Volume at the beginning of expansion, and v2 = Volume at the end of expansion)
The first law of thermodynamics is the law of
The first law of thermodynamics is the law of
Which of the following has the minimum atomic mass?
Which of the following has the minimum atomic mass?
The temperature at which the volume of a gas becomes zero is called
The temperature at which the volume of a gas becomes zero is called
A cycle consisting of one constant pressure, one constant volume and two isentropic processes is known as
A cycle consisting of one constant pressure, one constant volume and two isentropic processes is known as
The ratio of two specific heats of air is equal to
The ratio of two specific heats of air is equal to
The value of the product of molecular weight and the gas characteristic constant for all the gases in M.K.S. unit is
The value of the product of molecular weight and the gas characteristic constant for all the gases in M.K.S. unit is
Which of the following is the property of a system?
Which of the following is the property of a system?
The efficiency of Diesel cycle approaches to Otto cycle efficiency when
The efficiency of Diesel cycle approaches to Otto cycle efficiency when
Reversed Joule cycle is known as
Reversed Joule cycle is known as
Which of the following is the correct statement of the second law of thermodynamics?
Which of the following is the correct statement of the second law of thermodynamics?
On volume basis, air contains following parts of oxygen
On volume basis, air contains following parts of oxygen
The efficiency of the Carnot cycle is (where T1 and T2 = Highest and lowest temperature during the cycle)
The efficiency of the Carnot cycle is (where T1 and T2 = Highest and lowest temperature during the cycle)
Stirling and Ericsson cycles are
Stirling and Ericsson cycles are
According to Dalton's law, the total pressure of the mixture of gases is equal to
According to Dalton's law, the total pressure of the mixture of gases is equal to
Kerosene is distilled at
Kerosene is distilled at
The efficiency of a Carnot engine depends on
The efficiency of a Carnot engine depends on
The change of entropy, when heat is absorbed by the gas, is
The change of entropy, when heat is absorbed by the gas, is
A path 1-2-3 is given. A system absorbs 100 kJ as heat and does 60 kJ of work while along the path 1-4-3, it does 20 kJ of work. The heat absorbed during the cycle 1-4-3 is
A path 1-2-3 is given. A system absorbs 100 kJ as heat and does 60 kJ of work while along the path 1-4-3, it does 20 kJ of work. The heat absorbed during the cycle 1-4-3 is
In a steady flow process, the ratio of
In a steady flow process, the ratio of
According to First law of thermodynamics,
According to First law of thermodynamics,
The ideal efficiency of a Brayton cycle with regeneration, with increase in pressure ratio will
The ideal efficiency of a Brayton cycle with regeneration, with increase in pressure ratio will
