Exam Details
| Subject | Basics of Thermal Energy | |
| Paper | ||
| Exam / Course | Diploma in Mechanical Engineering | |
| Department | School of Engineering & Technology (SOET) | |
| Organization | indira gandhi national open university | |
| Position | ||
| Exam Date | June, 2015 | |
| City, State | new delhi, |
Question Paper
1. Choose the correct alternative for the following objective type questions.
Torr is a unit of
temperature
pressure
volume
energy
Which of the following is not an extensive property?
Volume
Pressure
Energy
Entropy
Perpetual motion machine of the second kind violates the
First law of thermodynamics
Kelvin-Planck statement
Clausius statement
Third law of thermodynamics
Heat transferred to a system at constant pressure is equal to
work transfer
change in internal energy
change in enthalpy
change in entropy
The efficiency of a reversible cycle depends upon the
nature of the working substance
amount of the working substance
temperature of the two reservoirs between which the cycle operates
type of cycle followed
The specific heats of an ideal gas Cp and Cv
vary with temperature
vary with pressure
vary with both pressure and temperature
are constant
Two insulated tanks containing ideal gases at different pressures and temperatures are connected to each other and gases are allowed to mix. The process that occurs can be called
free expansion
constant enthalpy
constant internal energy
reversible adiabatic
2. Answer any two of the following questions:
What is the Zeroth law of thermodynamics What is the difference between the universal gas constant and a characteristic gas constant?
A mass of 1·5 kg of air is compressed from 0·1 MPa to 0·7 MPa for which
pv constant. The initial density of air is 1·16 kg/m^3. Find the work done by the piston to compress the air.
The properties of a certain fluid are related as follows:
u =196 0·718 t
pv =0.287
where u is the specific internal energy t is in p is pressure and v is the specific volume
For this fluid, find Cv and Cp.
Enumerate the Kelvin-Planck statement of the second law of thermodynamics.
A vessel of volume 0·04 m^3 contains a mixture of saturated water and saturated steam at a temperature of 250°C. The mass of the liquid present is 9 kg. Find the pressure, the mass, the specific volume and the enthalpy.
What do you understand by triple point? What is quality of steam
What is a heat pump How does it differ from a refrigerator?
What are the four basic components of a steam power plant? Explain with the help of a block diagram.
How are the maximum temperature and maximum pressure in the Rankine cycle fixed When is reheating of steam recommended in a steam power plant?
5. Write short notes on any four of the following:
Solar Energy
Photovoltaic Cell
Radiation
Enthalpy
Reaction Turbine
Boiler Mountings
Torr is a unit of
temperature
pressure
volume
energy
Which of the following is not an extensive property?
Volume
Pressure
Energy
Entropy
Perpetual motion machine of the second kind violates the
First law of thermodynamics
Kelvin-Planck statement
Clausius statement
Third law of thermodynamics
Heat transferred to a system at constant pressure is equal to
work transfer
change in internal energy
change in enthalpy
change in entropy
The efficiency of a reversible cycle depends upon the
nature of the working substance
amount of the working substance
temperature of the two reservoirs between which the cycle operates
type of cycle followed
The specific heats of an ideal gas Cp and Cv
vary with temperature
vary with pressure
vary with both pressure and temperature
are constant
Two insulated tanks containing ideal gases at different pressures and temperatures are connected to each other and gases are allowed to mix. The process that occurs can be called
free expansion
constant enthalpy
constant internal energy
reversible adiabatic
2. Answer any two of the following questions:
What is the Zeroth law of thermodynamics What is the difference between the universal gas constant and a characteristic gas constant?
A mass of 1·5 kg of air is compressed from 0·1 MPa to 0·7 MPa for which
pv constant. The initial density of air is 1·16 kg/m^3. Find the work done by the piston to compress the air.
The properties of a certain fluid are related as follows:
u =196 0·718 t
pv =0.287
where u is the specific internal energy t is in p is pressure and v is the specific volume
For this fluid, find Cv and Cp.
Enumerate the Kelvin-Planck statement of the second law of thermodynamics.
A vessel of volume 0·04 m^3 contains a mixture of saturated water and saturated steam at a temperature of 250°C. The mass of the liquid present is 9 kg. Find the pressure, the mass, the specific volume and the enthalpy.
What do you understand by triple point? What is quality of steam
What is a heat pump How does it differ from a refrigerator?
What are the four basic components of a steam power plant? Explain with the help of a block diagram.
How are the maximum temperature and maximum pressure in the Rankine cycle fixed When is reheating of steam recommended in a steam power plant?
5. Write short notes on any four of the following:
Solar Energy
Photovoltaic Cell
Radiation
Enthalpy
Reaction Turbine
Boiler Mountings
Other Question Papers
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Subjects
- Applied Thermal Engineering
- Automobile Engineering
- Basics of Thermal Energy
- CAD / CAM
- CNC Machanics
- Computer Integrated Manufacturing
- Engineering Materials
- Machine Design
- Manufacturing Processes-I
- Manufacturing Processes-II
- Manufacturing Processes-III
- Metrology and Instrumentation
- Power Plant Engineering
- Theory of Machine