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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.
(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?
(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.
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
14. (i) Briefly explain fuel handling system. (8) (BT-5) Evaluating
(ii) Explain the methods of producing artificial
draught.

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?
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
4. (i) Explain in detail about Otto cycle and
processes with P-V and T-S diagrams
(ii) Draw a neat sketch of a diesel power
plant showing all the systems
5. (i) Write a note on fuel system of diesel
power plant.
(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.
(ii) What are the essential features of gas
turbine blades? How are blades cooled?
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