Exam Details
| Subject | Power Plant Engineering | |
| Paper | ||
| Exam / Course | Diploma in Mechanical Engineering (DMEVI)& B.Tech. MECHANICAL ENGINEERING 1-4 (BTMEVI) | |
| Department | School of Engineering & Technology (SOET) | |
| Organization | indira gandhi national open university | |
| Position | ||
| Exam Date | June, 2015 | |
| City, State | new delhi, |
Question Paper
What are the various types of coals Discuss the important properties of a good coal.
The percentage composition of a sample of coal is C H2 02 N2 S the remainder being ash. Estimate the minimum weight of air required for the combustion of 1 kg of this fuel and the composition of the dry products of combustion, by volume, if 50% excess air is supplied.
Draw the general layout of a modem thermal power plant. Explain the working of its major components.
Steam at 20 bar, 360°C is expanded in a steam turbine to 0·08 bar. It then enters Ii condenser, where it is condensed to saturated liquid water. The pump feeds back the water into the boiler. Assuming ideal processes, find the net work done per kg of steam and the cycle efficiency.
Discuss the special characteristics which enable water tube boilers to be best suited for modern thermal power plants. Describe the advantages gained by using economizers in a modern power plant.
What is the function of a superheater in a power plant What are the different types of superheaters used in thermal power plants? Explain their merits and demerits.
Derive the equation for the discharge through a nozzle arid the condition for its maximum value.
Dry saturated steam at a pressure of 11 bar enters a convergent-divergent 'nozzle and leaves at a pressure of.2 bar. If the flow is adiabatic and frictionless, determine the exit velocity of the steam.
Assume the index of adiabatic expansion to be 1·135.
What are the different types of condensers Discuss the relative advantages and disadvantages of a surface and a jet condenser.
What are the different types of cooling towers Explain the working of a forced draft cooling tower with a neat sketch.
In an impulse turbine, show that the maximum blade efficiency is given by .
cos^2 a
where a is the fixed nozzle angle, K is the blade velocity coefficient and the blade inlet and outlet angles are equal.
In a stage of impulse turbine provided with single row wheel, the mean diameter of the blade is 1 m. It runs at 3000 rpm. The steam issues from the nozzle at a velocity of 350 m/s and the nozzle angle is 20°. The rotor blades are equiangular. The blade friction factor is 0·86. Determine the power developed, if the axial thrust on the end bearing of a rotor is 118 N.
Draw the general layout of a hydroelectric power plant. Explain the working of 'its major components.
What are the various types of nuclear reactors used in nuclear power plants Discuss the working of anyone of them.
8. Write short notes on any four of the following:
Boiler draughts
Choking of a nozzle
Compounding of turbines
Losses in turbines
Diesel Power Plants
Nuclear Waste Disposal
The percentage composition of a sample of coal is C H2 02 N2 S the remainder being ash. Estimate the minimum weight of air required for the combustion of 1 kg of this fuel and the composition of the dry products of combustion, by volume, if 50% excess air is supplied.
Draw the general layout of a modem thermal power plant. Explain the working of its major components.
Steam at 20 bar, 360°C is expanded in a steam turbine to 0·08 bar. It then enters Ii condenser, where it is condensed to saturated liquid water. The pump feeds back the water into the boiler. Assuming ideal processes, find the net work done per kg of steam and the cycle efficiency.
Discuss the special characteristics which enable water tube boilers to be best suited for modern thermal power plants. Describe the advantages gained by using economizers in a modern power plant.
What is the function of a superheater in a power plant What are the different types of superheaters used in thermal power plants? Explain their merits and demerits.
Derive the equation for the discharge through a nozzle arid the condition for its maximum value.
Dry saturated steam at a pressure of 11 bar enters a convergent-divergent 'nozzle and leaves at a pressure of.2 bar. If the flow is adiabatic and frictionless, determine the exit velocity of the steam.
Assume the index of adiabatic expansion to be 1·135.
What are the different types of condensers Discuss the relative advantages and disadvantages of a surface and a jet condenser.
What are the different types of cooling towers Explain the working of a forced draft cooling tower with a neat sketch.
In an impulse turbine, show that the maximum blade efficiency is given by .
cos^2 a
where a is the fixed nozzle angle, K is the blade velocity coefficient and the blade inlet and outlet angles are equal.
In a stage of impulse turbine provided with single row wheel, the mean diameter of the blade is 1 m. It runs at 3000 rpm. The steam issues from the nozzle at a velocity of 350 m/s and the nozzle angle is 20°. The rotor blades are equiangular. The blade friction factor is 0·86. Determine the power developed, if the axial thrust on the end bearing of a rotor is 118 N.
Draw the general layout of a hydroelectric power plant. Explain the working of 'its major components.
What are the various types of nuclear reactors used in nuclear power plants Discuss the working of anyone of them.
8. Write short notes on any four of the following:
Boiler draughts
Choking of a nozzle
Compounding of turbines
Losses in turbines
Diesel Power Plants
Nuclear Waste Disposal
Other Question Papers
Departments
- Centre for Corporate Education, Training & Consultancy (CCETC)
- Centre for Corporate Education, Training & Consultancy (CCETC)
- National Centre for Disability Studies (NCDS)
- School of Agriculture (SOA)
- School of Computer and Information Sciences (SOCIS)
- School of Continuing Education (SOCE)
- School of Education (SOE)
- School of Engineering & Technology (SOET)
- School of Extension and Development Studies (SOEDS)
- School of Foreign Languages (SOFL)
- School of Gender Development Studies(SOGDS)
- School of Health Science (SOHS)
- School of Humanities (SOH)
- School of Interdisciplinary and Trans-Disciplinary Studies (SOITDS)
- School of Journalism and New Media Studies (SOJNMS)
- School of Law (SOL)
- School of Management Studies (SOMS)
- School of Performing Arts and Visual Arts (SOPVA)
- School of Performing Arts and Visual Arts(SOPVA)
- School of Sciences (SOS)
- School of Social Sciences (SOSS)
- School of Social Work (SOSW)
- School of Tourism & Hospitality Service Sectoral SOMS (SOTHSM)
- School of Tourism &Hospitality Service Sectoral SOMS (SOTHSSM)
- School of Translation Studies and Training (SOTST)
- School of Vocational Education and Training (SOVET)
- Staff Training & Research in Distance Education (STRIDE)
Subjects
- Advanced Dynamics Of Machine
- Automobile Engineering
- Combustion Engineering
- Computer Aided Manufacturing
- Computing Aided Design
- Design of Machine Elements
- Engineering Metallurgy
- Engineering Thermodynamics
- Experimental Stress Analysis
- Finite Element Analysis
- Fluid Mechanics
- Heat And Mass Transfer
- Heat Transfer
- I.C. Engines
- Industrial Engineering
- Industrial Ergonomics
- Industrial Measurement And Quality Control
- Industrial Organization And Management
- Kinematics and Dynamics of Machines
- Machine Design - I
- Machine Design-Ii
- Machine Drawing
- Machines Tools
- Maintenance Engineering
- Material Science
- Materials Handling
- Mechanical System Design
- Mechanical Vibration
- Mechanics Of Materials
- Mechatronics
- Metrology
- Metrology And Quality Control
- Non-Conventional Energy Resources
- Non-Destructive Testing
- Nuclear Power Engineering
- Optimisation Techniques In Engineering
- Optimization For Engineering Design
- Power Plant Engineering
- Power Transmitting Elements
- Product Development And Design
- Production And Operations Management
- Production Technology - Ii
- Production Technology-I
- Refrigeration And Air Conditioning
- Refrigeration System
- Robotics
- Safety Engineering
- Technical Entrepreneurship
- Thermal Engineering
- Thermal Engineering - I
- Thermofluid Engineering
- Total Quality Management (Tqm)
- Tribology
- Turbo Machines
- Unconventional Manufacturing Processes
- Welding Engg.