Power Plant Engineering previous year question paper | 3361906 |

What advantage can you take with gtu previos Exam Papers?

Exams appear to be a mystery to most students but some may find it exciting by looking at it as a competition. They pray about having a perfect dream about the coming test so that they already know it but that is not a reality truth is if you wants to succeed you have to prepare well for the exams.

Studying past papers are a valuable part of exam preparation and help keep revision focused on important themes whilst practicing exam style questions.

One of the simplest ways to prepare for the exams is to manage your study according to a well-defined time table and allot time to every subject. It is a good practice to compare the questions of the examiners because it will give a better idea about what the examiner is looking for in the exam.

 Technique for Studying gtu previos Exam Papers

Most of the universities keep copies of the past exams in their libraries or they can also be accessed from the university websites available on the internet. A good practice is to take past five year papers and, instead of going through the past exam paper year by year, find questions about the same topic and prepare that topic really well. This technique can be very helpful for preparing the exam.

Advantages of Studying gtu previos Exam Papers

One of the most important part of exam preparation is going through past exams. It is important  to revise your entire syllabus quickly. They can provide you the general idea of the upcoming paper and you could easily guess the important topics of a particular subject. Past exam papers give you the idea of number of questions and the available choices. It is therefore necessary for students to give some time to go through the past paper while revising a subject.

Past exam papers are one of the most helpful tools available to prepare for both internal and external examinations as they provides students with practical insight into how the forthcoming exam paper is likely to look and the key themes or subject areas most likely to be covered. Before starting revision for a subject it is always worth taking time to seek out past papers.

Summer 2015 Power Plant Engineering Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGINEERING – SEMESTER – VI • EXAMINATION – SUMMER 2015
Subject Code: 3361906  Date:11-05-2015
Subject Name: Power Plant Engineering
Time: 10:30am to 1:00pm            Total Marks: 70

Instructions:
1.  Attempt all questions.
2.  Make Suitable assumptions wherever necessary.
3.  Figures to the right indicate full marks.
4.  Use of programmable & Communication aids are strictly prohibited.
5.  Use of only simple calculator is permitted in Mathematics.
6.  English version is authentic.
7.  Use of steam table and molliar chart are permissible.

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Q.1 Answer any seven out of ten.   14

1.  Write the basic elements of various power plants.

2.  Give the function of trace rack in hydro power plant.

3.  Define binding energy.

4.  Write name of any three high pressure boilers.

5.  Write the function of ESP in steam power plant.

6.  Classify control system of steam power plant.

7.  Write down the auxiliary system of gas turbine power plant.

8.  Define cut in speed for wind turbine.

9.  Define load curve and load factor.

10.  What is tariff?

Q.2  (a)  Give the advantages of high pressure boiler.  03

OR

(a)  Explain reheat rankine cycle with h-s and t-s diagram.   03

(b)  Define air pre-heater and explain any one type of air pre-heater with sketch.  0 3

OR

(b)  State the functions of basic elements of control system.  03

(c)  Give the uses of diesel engine power plant.  04

OR

(c)  Explain with neat sketch cooling system of a diesel engine power plant.   04

(d)  Explain working of PWR with neat sketch.  04

OR

(d)  Write short note on disposal of nuclear waste.    04

Q.3  (a)  Explain Benson boiler with neat sketch.  03

OR

(a)  Define pulverized fuel supply system and explain any one.  03

(b)  List the instruments used to measure various parameters in modern central control room.  03

OR

(b)  Write short note on open loop control system.  03

(c)  In a steam power plant working on simple rankine cycle, the boiler pressure and condenser pressure are 35 bar and 0.1 bar respectively. If temperature of steam entering to turbine is 350 ⁰C, calculate (i) efficiency of rankine cycleand (ii) specific steam consumption.  04

OR

(c)  Explain fluidized bed combustion boilers.  04

(d)  Explain effects of load variation on various parameters of steam power plant.  04

OR

(d)  State the purpose of various records maintained in steam power plant.   04

Q.4  (a)  Compare gas turbine with diesel engine as prime mover.  03

OR

(a)  List the advantages of closed cycle gas turbine plant.  03

(b)  Draw the schematic diagram of modern thermal power plant.  04

OR

(b)  List the methods used to increase the efficiency of rankine cycle. Discuss any one from them.  04

(c)  A gas turbine plant is working on brayton cycle. Air enters the compressor at 15 ⁰C and 1 bar pressure. Pressure ratio is 6, air is then heated in combustion chamber where it is heated up to 727 ⁰C. Then this air is expanded in theturbine to a pressure of 1 bar. If the temperature at the end of compression is 242 ⁰C and at the outlet of the turbine is 366 ⁰C, then find out the isentropic efficiency of compressor & turbine. Take Cp =1.005 KJ/ Kg K and γ =1.4.   07

Q.5  (a)  Derive the relation between wind velocity, air mass and wind power for wind energy power plant.  04

(b)  Explain solar module and solar array.  04

(c)  Define: (1) connected load (2) demand factor (3) plant capacity factor 03

(d)  Explain fixed cost and operating cost of power plant.  03

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Winter 2015 Power Plant Engineering Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGINEERING – SEMESTER –VI • EXAMINATION – WINTER 2015
Subject Code: 3361906    Date: 10/12/2015
Subject Name: POWER PLANT ENGINEERING
Time: 02:30 PM TO 05:00 PM   Total Marks: 70

Instructions:
1.  Attempt all questions.
2.  Make Suitable assumptions wherever necessary.
3.  Figures to the right indicate full marks.
4.  Use of programmable & Communication aids are strictly prohibited.
5.  Use of only simple calculator is permitted in Mathematics.
6.  English version is authentic.

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Q.1 Answer any seven out of ten.  14

1.  State types of energy sources.

2.  Define central power plant and captive power plant.

3.  State any 4 advantages of nuclear power plant.

4.  State any two parameter of power cycle.

5.  List high pressure boilers with application.

6.  Explain ESP.

7.  Draw line diagram of reheat renkine cycle.

8.  Draw line diagram of closed cycle gas power plant.

9.  List advantages of hydro power plant.

10.   What is cost of electrical energy?

Q.2  (a)  State Difference between power plant and power station.   03

OR

(a)  State energy conversion in various power plant with line diagram.  03

(b)  Explain national grid and it’s importance.  03

OR

(b)  Explain general arrangement of nuclear power plant.  03

(c)   Explain simple renkine cycle with P-V and T-S diagram.  04

OR

(c)  Explain methods of improving rankine cycle efficiency.   04

(d)  Explain benson boiler.  04

OR

(d)  Explain super heater and air pre heater of high pressure boiler .  04

Q.3  (a)  Draw schematic diagram of modern thermal power plant  03

OR

(a)  Explain pulverized fuel handling systems.  03

(b)   Explain effect of load variation in steam power plant.  03

OR

(b)  State basic elements and requirements of good control system of power plant.  03

(c)  Explain need of record keeping and their purpose in power plant. 04

OR

(c)  Explain methods to improve the thermal efficiency of a simple open cycle constant pressure gas turbine power plant  04

(d)In air standard gas turbine , air enter at 16 deg. Centi and  1.01 bar in compressor . where it’s pressure is increased by 5 times . The temp. of air entering turbine is 810  deg. Centi and  expansion up to 1.01 bar pressure . find work ration of turbine to compressor. (г = 1.4 and Cp= 1.005 kJ/Kg K)   04

OR 

(d)  State essential components of gas turbine power plant and explain their functions.  04

Q.4  (a)  Write advantages and disadvantages of wind power plant.  03

OR

(a)  State conversion systems for solar energy and Explain Tower concept for power generation.  03

(b)  Explain potential of solar and wind energy in India with current data.  04

OR

(b)   Explain cost of electrical energy.   04

(c)  A steam power plant working on rankine cycle having boiler pressure 35 bar and condenser pressure 0.1 bar .steam temp. entering turbine is 350 deg.centi. find 1) rankine cycle efficiency 2) specific steam consumption .(use mollier chart and steam table )  07

Q.5  (a)Explain terms 1. Load curve 2. Demand factor, 3. Average load 4. Plant capacity factor.  04

(b)  A power plant having yearly maximum load is 180 MW. And minimum load is 60 MW. Plant generate 92x10^4 MWh energy . this plant has one unit of 110 MW and 2 units of 60 MW . find 1. Load factor 2. Total capacity . 3. Average load 4. Plant capacity factor . 04

(c)  Explain Diesel power plant.  03

(d)  State Criteria for selection of installation of nuclear power plant  03

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Summer 2016 Power Plant Engineering Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGINEERING – SEMESTER – VI • EXAMINATION – SUMMER 2015
Subject Code: 3361906  Date:11-05-2015
Subject Name: Power Plant Engineering
Time: 10:30am to 1:00pm            Total Marks: 70

Instructions:
1.  Attempt all questions.
2.  Make Suitable assumptions wherever necessary.
3.  Figures to the right indicate full marks.
4.  Use of programmable & Communication aids are strictly prohibited.
5.  Use of only simple calculator is permitted in Mathematics.
6.  English version is authentic.
7.  Use of steam table and molliar chart are permissible.

***************

Q.1 Answer any seven out of ten.   14

1.  Write the basic elements of various power plants.

2.  Give the function of trace rack in hydro power plant.

3.  Define binding energy.

4.  Write name of any three high pressure boilers.

5.  Write the function of ESP in steam power plant.

6.  Classify control system of steam power plant.

7.  Write down the auxiliary system of gas turbine power plant.

8.  Define cut in speed for wind turbine.

9.  Define load curve and load factor.

10.  What is tariff?

Q.2  (a)  Give the advantages of high pressure boiler.  03

OR

(a)  Explain reheat rankine cycle with h-s and t-s diagram.   03

(b)  Define air pre-heater and explain any one type of air pre-heater with sketch.  0 3

OR

(b)  State the functions of basic elements of control system.  03

(c)  Give the uses of diesel engine power plant.  04

OR

(c)  Explain with neat sketch cooling system of a diesel engine power plant.   04

(d)  Explain working of PWR with neat sketch.  04

OR

(d)  Write short note on disposal of nuclear waste.    04

Q.3  (a)  Explain Benson boiler with neat sketch.  03

OR

(a)  Define pulverized fuel supply system and explain any one.  03

(b)  List the instruments used to measure various parameters in modern central control room.  03

OR

(b)  Write short note on open loop control system.  03

(c)  In a steam power plant working on simple rankine cycle, the boiler pressure and condenser pressure are 35 bar and 0.1 bar respectively. If temperature of steam entering to turbine is 350 ⁰C, calculate (i) efficiency of rankine cycleand (ii) specific steam consumption.  04

OR

(c)  Explain fluidized bed combustion boilers.  04

(d)  Explain effects of load variation on various parameters of steam power plant.  04

OR

(d)  State the purpose of various records maintained in steam power plant.   04

Q.4  (a)  Compare gas turbine with diesel engine as prime mover.  03

OR

(a)  List the advantages of closed cycle gas turbine plant.  03

(b)  Draw the schematic diagram of modern thermal power plant.  04

OR

(b)  List the methods used to increase the efficiency of rankine cycle. Discuss any one from them.  04

(c)  A gas turbine plant is working on brayton cycle. Air enters the compressor at 15 ⁰C and 1 bar pressure. Pressure ratio is 6, air is then heated in combustion chamber where it is heated up to 727 ⁰C. Then this air is expanded in theturbine to a pressure of 1 bar. If the temperature at the end of compression is 242 ⁰C and at the outlet of the turbine is 366 ⁰C, then find out the isentropic efficiency of compressor & turbine. Take Cp =1.005 KJ/ Kg K and γ =1.4.    07

Q.5  (a)  Derive the relation between wind velocity, air mass and wind power for wind energy power plant.  04

(b)  Explain solar module and solar array.  04

(c)  Define: (1) connected load (2) demand factor (3) plant capacity factor 03

(d)  Explain fixed cost and operating cost of power plant.  03

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Winter 2016 Power Plant Engineering Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
Diploma Engineering - SEMESTER–VI • EXAMINATION – WINTER • 2016
Subject Code: 3361906  Date: 25-10-2016
Subject Name: Power Plant Engineering
Time: 10:30 am - 01:00 pm  Total Marks: 70

Instructions:
1.  Attempt all questions.
2.  Make Suitable assumptions wherever necessary.
3.  Figures to the right indicate full marks.
4.  Use of programmable & Communication aids are strictly prohibited.
5.  Use of only simple calculator is permitted in Mathematics. 
6.  English version is authentic.

***************

Q.1 Answer any seven out of ten.   14

1.  Define power plant and factory.

2.  State energy sources.

3.  State overall specifications of power plants.

4.  Define specific steam consumption and rankine cycle heat rate.

5.  Explain super critical rankine cycle.

6.  State 4 advantages of high pressure boilers.

7.  List basic elements of nuclear reactor.

8.  Write 2 differences between PWR and BWR used in nuclear power plant.

9.  State purposes of Hydro Power project.

10.  Explain cost of power in brief.

Q.2  (a)  Explain concept of power plant.  03

OR

(a)    Write differences between power plant and power station.  03

(b)  State line diagram of energy conversion in various power plants.  03

OR

(b)  Write short note on national grid .  03

(c)  Explain rankine cycle with PV and TS diagram.  04

OR

(c)  Explain reheat rankine cycle.  04

(d)  Write  methods  of  improving  rankine  cycle  efficiency  and  explain  any  one method.  04

OR

(d)  Draw schematic diagram of FBC boiler and explain.  04

Q.3  (a)  .Classify furnaces and explain pulverized coal furnace.  03

OR

(a)  Explain any one system of pulverized coal supply.   03

(b)  List various circuits of modern thermal power plant and explain any one .    03

OR

(b)  Classify control system used in power plant and explain any one.  03

(c)  Explain Lamont boiler  04

OR

(c)  Explain Benson boiler.  04

(d)  List various parameters and its measuring equipments in power plants.  04

OR

(d)  List records maintained in power plant and state its purpose.  04

Q.4  (a)  Write essential elements of diesel power plant and their functions.  03

OR   

(a)  Advantages of gas turbine over diesel engine as prime mover.  03

(b)   State  conversion  systems  for  solar  energy  and  explain  photo  voltaic  solar power plant   04

OR

(b)  Define load curve, demand factor, load factor, plant capacity factor.  04

(c)  State and explain methods of improving performance of gas turbine power plant.  07

Q.5  (a)  A renkine cycle steam power plant working between 40 bar and 0.4 bar pressure. Steam entering turbine having temperature of  400 deg. Centi. Find cycle efficiency and specific steam consumption.  04

(b)  A  air  standard  gas  turbine  has  air  16  deg  centi  temp.  and  1.01  bar  pressure entering compressor .  Air  pressure is increased 5 times in compressor.  The air entering temp. at turbine is 810 deg. Centi.  Air is expanded to initial pressure Find turbine and compressor work.   04

(c)  Write short note on wind power plants.  03

(d)  Short note on Super heaters and air pre heaters.  03

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