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VALLIAMMAI ENGINEERING · PDF fileValliammai Engineering College SRM Nagar, Kattankulathur ......

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VALLIAMMAI ENGINEERING COLLEGE SRM Nagar, Kattankulathur 603 203 DEPARTMENT OF MECHANICAL ENGINEERING QUESTION BANK VII SEMESTER ME-6701 POWER PLANT ENGINEERING Regulation 2013 Academic Year 2017-2018 (Odd Semester) Prepared by Mr. S. PUNGAIYA, Assistant Professor (O.G)/MECH Mr. S. SIVASANKAR, Assistant Professor (O.G)/MECH Mr. T. KARTHICK, Assistant Professor (O.G)/MECH
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  • VALLIAMMAI ENGINEERING COLLEGE

    SRM Nagar, Kattankulathur 603 203

    DEPARTMENT OF

    MECHANICAL ENGINEERING

    QUESTION BANK

    VII SEMESTER

    ME-6701 POWER PLANT ENGINEERING

    Regulation 2013

    Academic Year 2017-2018 (Odd Semester)

    Prepared by

    Mr. S. PUNGAIYA, Assistant Professor (O.G)/MECH

    Mr. S. SIVASANKAR, Assistant Professor (O.G)/MECH

    Mr. T. KARTHICK, Assistant Professor (O.G)/MECH

  • Valliammai Engineering College SRM Nagar, Kattankulathur 603 203

    DEPARTMENT OF MECHANICAL ENGINEERING

    ME-6701 POWER PLANT ENGINEERING

    QUESTION BANK

    UNIT-I COAL BASED THERMAL POWER PLANTS

    Rankine cycle - improvisations, Layout of modern coal power plant, Super Critical Boilers, FBC Boilers,

    Turbines, Condensers, Steam & Heat rate, Subsystems of thermal power plants Fuel and ash handling, Draught

    system, Feed water treatment. Binary Cycles and Cogeneration systems.

    PART-A

    Q.No. Questions

    BT

    Level Competence

    1. Define pinch point. (BT-1) Remembering

    2. What are the two basic parameters to decide while planning a

    power plant? (BT-3) Applying

    3. What do you understand by the term FBC? (BT-2) Understanding

    4. What do you understand by the term boiler draught? (BT-2) Understanding

    5. What is boiler efficiency? (BT-2) Understanding

    6. Define supercritical steam cycle. (BT-1) Remembering

    7. What is a back pressure turbine and write any two applications. (BT-6) Creating

    8. What is pass-out turbine and when is it used? (BT-1) Remembering

    9. What are the functions of draught system? (BT-1) Remembering

    10. What do you understand by the term boiler draught? (BT-2) Understanding

    11. Classify power plants on the basis of traditional use. (BT-3) Applying

    12. Draw the P-V, H-S, and T-S diagram for Rankine cycle. (BT-3) Applying

    13. What are the processes of Binary cycle? (BT-4) Analyzing

    14. Why is hydrazine injected at the suction of the boiler feed

    pump? (BT-5) Evaluating

    15. What are once through boilers? (BT-4) Analyzing

  • 16. What are the requirements of a modern surface condenser? (BT-4) Analyzing

    17. List out conventional power plants. (BT-1) Remembering

    18. List any two advantages of combined cycles. (BT-1) Remembering

    19. What is the mechanism of pulverized fuel firing system? (BT-5) Evaluating

    20. What is mean by cogeneration system? (BT-1) Remembering

    PART-B

    Q.No Questions Marks BT Level Competence

    1. Explain briefly the basic Rankine cycle of a thermal

    power plant. List out the major components and

    explain their functions.

    (16)

    (BT-1) Remembering

    2. (i)Why reheating is used in some power plants.

    Explain the modified Rankine cycle.

    (8) (BT-5) Evaluating

    (ii) Draw the complete layout of steam power plant

    and explain its major components.

    (8) (BT-3) Applying

    3. (i) Explain the working principle of FBC with a neat

    sketch.

    (8) (BT-3) Applying

    (ii) Discuss the functions of air heater types? (8) (BT-3) Applying

    4. (i) Sketch and explain a pressurized FBC system (8) (BT-4) Analyzing

    (ii) Steam enters the high pressure turbine at 12 Mpa

    and 600C and is condensed in the condenser at a

    pressure of 10 kPa. If the moisture content of steam at

    the exit of low pressure turbine is not to exceed 12 %.

    Determine pressure at which the steam should be

    reheated and thermal efficiency of the cycle.

    (8)

    (BT-6) Creating

    5. (i) Explain the unique features of high pressure boilers. (6) (BT-4) Analyzing

    (ii) What is the ash handling system? Draw a line

    diagram of hydraulic ash handling system for modern

    high capacity plants. Explain its working.

    (10)

    (BT-3) Applying

    6. (i) Explain the principle involved in preparation of

    coal and what are the methods of preparation.

    (8) (BT-5) Evaluating

    (ii) Distinguish between high pressure boiler and

    supercritical boiler.

    (8) (BT-2) Understanding

  • 7. Explain the various draught systems with a neat

    sketch.

    (16) (BT-3) Applying

    8. (i) Explain cogeneration plant efficiency. (8) (BT-5) Evaluating

    (ii) What do you understand by cogeneration of power

    and process heat? and Explain its thermodynamic

    advantage.

    (8)

    (BT-2) Understanding

    9. (i) Define binary cycle? Explain the layout and

    operation of the mercury-steam binary cycle power

    plant?

    (10)

    (BT-1) Remembering

    (ii) Define power coefficient? How does it affect the

    performance of a cogeneration plant?

    (6) (BT-1) Remembering

    10. (i) How does an industrial steam generator differ from

    a utility boiler?

    (8) (BT-2) Understanding

    (ii)Why boiler water is to be treated? Explain briefly

    feed water treatment.

    (8) (BT-4) Analyzing

    11. (i) Explain with the help of neat diagram of

    Evaporative surface condenser and list out its

    advantages.

    (8)

    (BT-1) Remembering

    (ii) Enumerate and explain the steps involved in coal

    handling.

    (8) (BT-2) Understanding

    12. Draw a general layout of a thermal power plant and

    explain the working of various circuits in it.

    (16) (BT-3) Applying

    13. Draw and explain in detail about the construction and

    working principle of cooling towers

    (16) (BT-4) Analyzing

    14. (i) Briefly explain fuel handling system. (8) (BT-5) Evaluating

    (ii) Explain the methods of producing artificial

    draught.

    (8) (BT-4) Analyzing

  • UNIT-II DIESEL, GAS TURBINE AND COMBINED CYCLE POWER PLANTS

    Otto, Diesel, Dual & Brayton Cycle - Analysis & Optimisation. Components of Diesel and Gas Turbine

    power plants. Combined Cycle Power Plants. Integrated Gasifier based Combined Cycle systems.

    PART-A

    Q.No. Questions BT Level Competence

    1. What is a diesel engine (BT-1) Remembering

    2. What are the applications of diesel engine power plant (BT-3) Applying

    3. What are the different types of engines used in diesel

    power plant (BT-2) Understanding

    4. Why is power generation by gas turbines attractive these

    days (BT-4) Analyzing

    5. What is the duty of the air intake system in a diesel engine

    power plant (BT-2) Understanding

    6. Define break thermal efficiency (BT-1) Remembering

    7. What is cycle? What is the difference between an ideal

    and actual cycle? (BT-2) Understanding

    8. Draw a P-V and T-S diagram for Otto cycle (BT-3) Applying

    9. Draw the layout of Diesel power plant (BT-3) Applying

    10. Show that the efficiency of the Otto cycle depends only on

    the compression ratio (BT-6) Creating

    11. State the four processes of the Dual cycle (BT-1) Remembering

    12. Define IGCC (BT-1) Remembering

    13. Why is the maximum cycle temperature of gas turbine

    plant much lower than that of diesel power plant (BT-5) Evaluating

    14. Classify the types of combined cycle plants. (BT-4) Analyzing

    15. What are the advantages of combined cycles (BT-1) Remembering

    16. What is reheating and regeneration of gas turbine (BT-3) Applying

    17. Enlist the advantages and disadvantages of diesel engine

    power plants (BT-1) Remembering

    18. What is the environmental impact of a combined cycle

    plant (BT-4) Analyzing

    19. What is integrated gasification combined cycle (BT-2) Understanding

    20. Explain the term repowering (BT-5) Evaluating

  • PART-B

    Q.No Questions Marks BT Level Competence

    1. List and explain the function of the essential

    components of a diesel power plant.

    (16) (BT-1)

    Remembering

    2. (i) With an aid of a block diagram, explain

    the working principle of a closed cycle gas

    turbine plant

    (10)

    (BT-3) Applying

    (ii) Explain how do you select engine for a

    diesel power plant?

    (6) (BT-4) Analyzing

    3. (i) What are the factors to be considered for

    selecting the site of a diesel engine power

    plant?

    (8) (BT-1)

    Remembering

    (ii) Describe the different fuels which can be

    burnt in a turbine plant

    (8) (BT-2) Understanding

    4. (i) Explain in detail about Otto cycle and

    processes with P-V and T-S diagrams

    (8) (BT-5) Evaluating

    (ii) Draw a neat sketch of a diesel power

    plant showing all the systems

    (8) (BT-1) Remembering

    5. (i) Write a note on fuel system of diesel

    power plant.

    (8) (BT-1) Remembering

    (ii) Explain how reheating improves the

    efficiency of a simple open cycle gas turbine

    plant.

    (8) (BT-4)

    Analyzing

    6. (i) Discuss the effect of pressure ratio on

    Brayton cycle output and efficiency.

    (8) (BT-2)

    Understanding

    (ii) Explain in detail about Dual cycle. (8) (BT-5) Evaluating

    7. (i) Discuss the performance characteristics of

    a gas turbine power plant.

    (8) (BT-2) Understanding

    (ii) What are the essential features of gas

    turbine blades? How are blades cooled?

    (8) (BT-5) Evaluating

    8. (i) Discuss the materials which are used for

    gas turbines and compressors. What

    properties should the blade material possess?

    (8)

    (BT-2) Understanding

  • (ii) Explain the ef


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