N .G. PATEL POLYTECHNIC, ISROLI · rewrite the following sentences choosing the correct verb form...

N .G. PATEL POLYTECHNIC, ISROLI SUBJECT: BASIC MATHEMATICS (3300001)

UNIT : 3

TRIGONOMETRY

*Question set for 1 mark.

1. Convert into Radian,135°, 150°, 225°, 20°, 1260° 2. Convert into Degree 3π/4,2π/3,7π/6,17π/4,π/12 3. Find the value :

1. tan 225° 2. sin−210° 3. cot−3휋/4 4. cos 17휋/6 5. sin 1320°

4. Prove that (1)sin257° - sin233° (2)cos230° – cos260°

5. Period of (1) sin2x, (2) tan(3x+휋/6)

6. (1)cos(cos ) (2) sin (− )

* Question set for 3 mark.

1. Prove that, cos . sin - sin . cos = 0

2. Prove that, tan . tan . tan . tan . tan = 1

3. (1+tan 25°) (1+tan 20°) =1

4. cos 20° cos 40° cos 80° =

5. Prove that, = tan 푎

6. Prove that, tan + tan =


1. ( )

( ) +

( )

( ) +

( )( )

= -1

2. = tan 3휃

3. Prove that, tan ( ) + sin ( ) =

4. sin ( ) + cos ( ) + tan ( )=휋

5. Draw the graph of y= sinx, 0≤ 푥 ≤ 2휋 6. Draw the graph of y=sin 2x, -휋 ≤ 푥 ≤ 휋

UNIT : 5

VECTOR


1. A=3i-4j-5√3k, than |퐴|=………

2. 푎(푎x푏) =………

3. If 푎= -i+3j & 푏= 2i+3j.then |푎| + |푏|=……..

4. (푎x푏). (푏x푎) =………


1. If 푎=i-2j+4k,푏= -3i+j-4k & 푐=i+2j-4k then find 5푎 + 3푏 +2푐|

2. If 푎=3i-j-4k,푏= -2i+4j-3k & 푐= -i+2j-5k then find the

direction cosine of 푎+2푏-푐

3. If 푎=3i-2j-√5k & 푏=4i+2j+√5k then find the projection of

푎 on 푏

4. If 푎=i-j+k,푏=2i-j+k & 푐=i+j-2k then find 푎.(푏 + 푐)

5. If 푎=10i+2j+3k,푏=i-2j+2k & 푐=3i-2j-2k then find 푎. (푏x푐) 6. For what value of m,the vectors 2i-3j+5k & mi-6j-8k are

perpendicular to each other? 7. Show that the angle between the vectors 2i+j+4k & i+j+k is

cos √

8. Show that the angle between the vectors i+j-k & 2i-2j+k is

sin √

9. Find unit vector perpendicular to the vector 푎=(5,7,-2) &

푏=(3,1,-2)

*Question set for mark 4 .

1. If 푎=2i-3j+4k & 푏=i-j+k find unit vector perpendicular to

푎 + 푏 & 푎 − 푏 2. A body ic acted upon the forces 3i-2j+k & -i-j+2k. If the

body moves under the forces from the point (2,2,-3) to (-1,2,4). Find the work done.

3. A particle moves from the point 3i-2j+k to the pointi+3j-4k under the effect of constant forces i-j+k,i+j-3k & 4i+5j-6k.Find the work done.

4. Find the moment about the point (2,3,-1) of the force 3i-k acting through the point (1,-2,1). Also find the magnitude of the moment.

N.G.PATEL POLYTECHNIC,ISROLI-AFWA SCIENCE & HUMANITIES DEPTT. ASSIGNMENT TERM-2013/01

SUBJECT: ENGLISH(3300002)

INSERT,WHERE NECESSARY,APPROPRIATE DETERMINERS TO COMPLETE THE SENTENCE:

1. My brother is ------------------ engineer. 2. He has ---------------- picture book. ------------------ book is very costly. 3. Is there --------------- milk in the jug? 4. Put -------------------- more mangoes in the basket. 5. ------------------ of the machines has been cleaned and oiled. 6. I am terribly busy these days, I have ------------------ time to spare. 7. How--------------- work can be finished today? 8. Can I have --------------- rest? 9. --------------- the sisters are good engineers. 10. ---------------- is calling you outside.

REWRITE THE FOLLOWING SENTENCES USING APPROPRIATE FORMS OF VERBS: 1. Someone (knock) at the door. Please open it. 2. Haste (make) waste. 3. The train (not + arrive) yet. 4. Janak (do) this job since 2005. 5. They (live) in pune twenty years ago. 6. When his mother called , he (arrange) books in a cupboard. 7. After the parents (meet) the principal, they met the teacher. 8. Mohan (visit) the zoo next Sunday. 9. We (meet) tomorrow in the morning. 10. The prime minister (open) the new airport next week.

USE PROPER MODAL AUXILIARIES BRINGING OUT THE DESIRED MEANINGS :

1. Megha and her team------------------ do magic in this singing competition. (present ability) 2. Rohan ------------------- climb up the tree when he lived in the village. (past ability) 3. There are black clouds. It ------------------ rain today. (probability/possibility) 4. Samir --------------- go to Baroda next week. (future plan) 5. We ------------------ be careful towards our parents. (sense of duty) 6. ----------------------- you like to have coffee ? (polite request) 7. As a sensible citizen of India, we ------------------ follow traffic rules. (necessity) 8. Akshay ------------------ keep quiet as the students are reading in the next room. (present

equivalent of ‘must’) 9. You ------------------- study as the exam is over. (absence ofobligation) 10. This film-------------- be a super duper hit in 2014. (strong probability)

REWRITE THE FOLLOWING SENTENCES CHOOSING THE CORRECT VERB FORM THE BRACKET.

1. The colours of the wall (is/are) really enchanting.

2. Not only Ram but his brothers (was/were) also pious.

3. All the students (have/has) a book each.

4. Manish and Mehul (is/are) good friends.

5. Little knowledge (is/are) always dangerous.

CHANGE THE FOLLOWING SENTENCES INTO PASSIVE VOICE.

1. Rahul locks the office every evening.

2. we have arranged a party tomorrow.

3. Columbus discovered America.

4. You should open the door as we feel suffocated here.

5. Hema can make a cake.

6. I am not reading a book right now.

7. He was writing a book.

8. I was buying a doll for my daughter when you called me.

9. Sachin hit ten sixes in his last test match.

10. The girl has given a brilliant performance on the stage. FILL IN THE GAPS CHOOSING THE CORRECT PREPOSITIONS. 1. The juice is---------------- the glass.

2. The green board is------------------ the wall.

3. She is waiting for me--------------- the bus stop.

4. I like swimming--------------- the river.

5. Two persons are quarrelling----------------- the door.

6. Their luggage is -------------------- . They are waiting for the taxi.

7. Ankita fell------------------------ the ladder.

8. It is very cool-------------------- the room.

9. Take your legs------------------ the table.

10. There is post box--------------- the office.

11. I pushed the letter-------------- the door.

12. we like to drive ----------------- the bridge.

13. I saw the accident right---------------- me.

14. The shopping mall is --------------- the school and the temple.

15. The flight is--------------- Surat------------- Mumbai.

JOIN THE SENTENCES USING APPROPRIATE CONNECTORS.

1. The question paper was very tough. It was very lengthy.

2. Anila works sincerely. She does not get promotion.

3. Be regular in the class. You will not understand English properly.

4. There are many hurdles in life. We have to be ready for them.

5. I always remember my teacher Prof. Rana. He has always inspired me a lot.

6. The peon was promoted. He was hardworking.

7. The doctor tried hard to save the child. He could not save it.

8. The man gave her some new ideas. She met him a few days ago.

9. Where is the college ? Your mother works as a lecturer there.

10. English is easy. English is useful.

FIND OUT THE CORRECT ANSWER FOR THE FOLLOWING QUESTIONS (from short stories and comprehension passages).

1. “Teach him to be gentle with gentle people,and tough with the tough.’’ This statement indicates---------------. (a) when there is a will,there is a way (b) Tit for tat (c) All is well (d) To err is human.

2. Intellectual independence in the west means -----------------------. (a) independent thinking (b) feudal thinking (c) thinking as the boss instructs (d) no thinking.

3. Dabbawallahs work with-----------------. (a) clarity and speed (b) precision and speed (c) carefulness and swiftness (d) precision and sharpness.

4. ----------------------- can harm teenagers and young minds. (a) Email (b) surfing (c) chatting (d) pornography.

5. ----------------------- is a cyber crime. (a) surfing on internet (b) listening to music (c) hacking of email account (d) using social networking sites.

6. Which one is a social networking site ?---------------------. (a) Google Earth (b) Google (c) Google Plus (d) Google Pulse.

7. When the speaker met Todd over dinner he was talking about-------------------. (a) Poland (b) Bermuda (c) a dollar (d) his plan.

8. What does Dasa demand from the friend ?--------------------- (a) a grass-cutter (b) a knife (c) a mower (d) an axe.

9. The author of the Book of Pirates is-------------------. (a) Howard Pyle (b) Earnest Hemingway (c) Schatz (d) Schatz’s father.

10. Schatz had a misunderstanding regarding---------------------. (a) two thermometers (b) Book of Pirates (c) miles and kilometres (d) two pirates.

ANSWER THE FOLLOWING QUESTIONS IN TWO OR THREE SENTANCES (from comprehension and short stories).

1. What would the result of having sublime faith in oneself be ? 2. Which must come first- privileges or principles ? why? 3. What are the two secrets of Dabbawallahs unity ? 4. What is a cyber crime ? 5. What did Todd’s note from Bermuda contain ? 6. What did the article in a US paper state about the deaths due to snake bite ? 7. How did Schatz’s father clarify his doubts about temperature ?

--------------------------------------------------------------------------------------------------------------------------------

N.G.PATEL POLYTECHNIC, ISROLI-AFWA

ASSIGNMENT QUESTIONS Sub: FOME Term: 131

Unit 1: introduction.

1. Define and explain the term Engineering. 2. Draw the terminology of V thread and label all the terms. 3. Define fasteners. Give the classification of fasteners. 4. List out the types of pipes and explain any one in detail. 5. List out the spanners. 6. List out the types of chisel and explain any one in detail. 7. Write the use of oil seal and O ring. 8. Write the list of valve used in plumbing. 9. Define antifriction bearing and give its classification. 10. Write short not on metric thread.

Unit 2: Power Transmission and Safety.

1. Derive the tension ratio T1/T2=e ^ µθ in the belt Power transmission. 2. Write advantage, disadvantage and application of gear train. 3. What are the causes and remedies of accidents? 4. Define Slip and State its effect. Explain the methods to reduce Slip. 5. Explain importance of bearing and coupling in Power transmission. 6. Define Gear train. Give classification of gear train and explain any one of them. 7. Which type of Gears is used in power transmission? 8. List various types of Power transmission systems used in engineering and give

application of each system. 9. State advantages and disadvantages of Flat belt over “V” belt. 10. Explain V belt drive. 11. State personal Safety and Tool Safety in Shops. 12. Calculate the Power transmitted by belt drive from the following data:

a. Angle of Contact=150º b. Co-efficient of Friction=0.24 c. Maximum tension in the belt=2800 N d. Velocity of the belt=18 m/sec

13. Find the width of the belt from the following data: a. Power transmitted=20 KW b. Speed of the pulley=300 RPM c. Co-efficient of friction=0.25 d. Maximum permissible tensile strength=3 N/mm² e. Diameter of pulley=800 mm f. Angle of contact=170⁰ g. Thickness of the belt=10 mm h. (ANS: b=102 mm)


Unit 3: Process on materials.

1. Define: Welding, Weld ability 2. Give the classification of welding. 3. What is gas welding? List the equipment used in gas welding. 4. What is arc welding? Give classification of arc welding. 5. Explain working principle of carbon arc and metal arc welding. 6. With neat sketch explain submerged arc welding. 7. Write a short note on:

a. TIG welding b. MIG welding c. Soldering d. Brazing. 8. Differentiate between Gas welding and Arc welding. 9. Name the common solder and spelter. 10. Explain oxy acetylene welding process with neat sketch. 11. Explain types of flames with neat sketch. 12. Compare TIG and MIG welding process. 13. Compare welding with soldering and brazing process. 14. Differentiate between soldering and brazing. 15. Write down the advantages, disadvantages and applications of welding. 16. Wright a short note on foundry. 17. Give the step by step procedure for casting process. 18. Explain following metal forming process with sketch,

1. Forging 3. Drawing. 5. Extrusion. 2. Spinning. 4. Bending. 6. Coining.

19. Define machine tools and list out the basic machine tools. 20. Explain principle of lathe machine with neat sketch. 21. Explain all parts of drilling machine with neat sketch. 22. Give classification of milling machine. 23. List out the operation done on milling machine and explain plain milling

machine. 24. Explain following machining process,

1. Reaming. 3. Boring. 5. Tapping. 2. Knurling. 4. Turning. 6. Facing.

25. Classify the forging process and explain any one.


Unit 4: Steam generation and prime movers.

1. Explain Babcock and Wilcox boiler. 2. List various steam turbine compounding and explain any one. 3. Meaning of term “Prime mover”. Explain steam engine with sketch. 4. List various boiler mountings and explain any one. 5. Define boiler and state its functions. Classify the boilers. 6. List the boiler mountings and accessories. State the function of each. 7. Compare fire tube boiler with water tube boiler. 8. Explain with sketch construction & working of tubular type air preheated. 9. Write difference between steam engine & steam turbines 10. Define Prime mover and explain compounding of steam turbine.

Unit 5: Internal Combustion Engine.

1. Give the Classification of Engine. 2. Explain working of two stroke engine. 3. Explain working of four stroke engine. 4. List advantage and disadvantages of two stroke engine. 5. Differentiate between 2 stroke and 4 stroke engine. 6. List various lubrication systems and explain any one. 7. Explain working Principle of carburetor. 8. List various systems of I.C.engine and explain any one. 9. List various equipment used in gas engine and state the function of each. 10. List alternative fuel that can be use for IC Engine. 11. The result of test on a four stroke engine is as follow:

Speed of the engine=250 RPM Net Brake Load (W-S) =200 N Diameter of brake Drum=0.9 m Consumption of fuel=0.7 Kg/Hr C.V. of fuel=40000 KJ/Kg Calculate: Brake Power and Brake thermal efficiency

12. Find the indicated power of a four stroke petrol engine of swept volume of 6 liters and running at 1000 rpm. The

mean effective pressure is 600 KN/m².


Unit 6: Hydraulic and Pneumatic Devices.

1. Explain Pump and Classify it. 2. Explain Working of Reciprocating Pump with neat Sketch. 3. What is Air vessel, explain. 4. Define Slip in Reciprocating Pump. 5. Give the function of Non return valve in reciprocating pump. 6. List the components of centrifugal pump, and explain each of them. 7. Explain working of centrifugal pump. 8. Differentiate between centrifugal Pump and Reciprocating Pump. 9. Give Specification of the Pump. 10. List various types of faults observed in C.F. Pump. 11. List various types of faults observed in Reciprocating Pump. 12. Give the reasons and remedies for the following faults in C.F. Pump.

I. Excessive vibration. II. No water is delivered.

III. Pump fails to start. 13. Classify of air compressor and single stage reciprocating compressor. 14. Write short note on hydraulic lift with neat sketch. 15. Explain hydraulic press with neat sketch. 16. Any seven uses of pneumatic system. 17. A centrifugal pump deliver water at the rate of 70 liters/sec and develop

Head of m. If the efficiency of the pump is 80%.Find the Power required driving the Pump.

Unit 7: Material Handling.

1. List the various cranes and explain any one. 2. State factor effecting on selection of material handling equipment. 3. Define material handling also state its selection criteria. Classify the horizontal

and vertical material handling equipment. 4. Write the necessity of material handling in industry & civil Construction. 5. Classify various materials handling equipment. Explain any one with neat

sketch.

SCIENCE AND HUMANITIES DEPARTMENT

SUBJECT CODE: 3300003 Page 1

DATE: 05/09/2013

N. G. PATEL POLYTECHNIC, AFWA-ISROLI

ENVIRONMENT CONSERVATION AND HAZARD MANAGEMENT

ASSIGNMENT NO: 1

ECOLOGY AND ENVIRONMENT

Q. 1. Define terms: (Jan-2013) a) Environment b) Ecology c) Ecosystem d) Environmental science Q. 2. Define the parts of environment and its examples.

Q. 3. Describe the component of environment.

Q. 4. Write short note. a) Greenhouse effect and impact. b) Acid rain and its impact.

Q. 5. Describe food chain and food web with suitable examples. (Jan-2013)

Q. 6. Discuss the components of ecosystem.

Q. 7. What is radiation? Give adverse effects of radiation on vegetation and

animals. (June-2013, Jan-2013)

Q. 8. What is pollutants and pollution? Enlist the types of pollution and

explain any one in detail. (Jan-2013)

Q. 9. Enlist the voluntary and non government organization working for public awareness for an environment. (June-2013)

Q. 10. Explain role of an engineer for protection of an environment. (June-2013)

Mrs. R.P.Patel Dr. P. R. Patel

Mr. A. J. Solanki HOD

Mr. R. R. Prajapati



DATE:



ASSIGNMENT NO: 2

SUSTAINABLE DEVELOPMENT

Q. 1. Write short note on Sustainable development. (June-2013)

Q. 2. What is the natural resource? Describe a-biotic and biotic natural resources

in detail. (Jan-2013, June-2013)

Q. 3. Describe the potential of developing renewable sources of energy in India. OR

Q. 3. Discuss about growth of renewable energy in India. (June-2013)

Q. 4. Write short note on energy crisis.

Q. 5. Explain the necessity of energy conservation.

Q. 6. Explain concept of water management and its recycling. (June-2013)

Q. 7. Give the application of renewable energy resources. (June-2013)



Mr. R. R. Prajapati



DATE:



ASSIGNMENT NO: 3

WIND POWER

Q. 1. Discuss the factor to be considered while selecting a windmill site.

Q. 2. Enlist the vertical axis wind mill and explain any one in detail with sketch.

Q. 3. Enlist the horizontal axis wind mill and explain any one in detail with sketch.

(Jan-2013)

Q. 4. Explain the types of electrical generator used in wind turbine. (Jan-2013)

Q. 5. Give the application of wind mill.

Q. 6. Explain the concept of wind farm. (June-2013)

Q. 7. Explain about aerodynamic control in wind turbines. (June-2013)

Q. 8. Differentiate between horizontal axis wind mill and vertical axis windmill.



Mr. R. R. Prajapati



DATE:



ASSIGNMENT NO: 4

SOLAR POWER

Q. 1. Explain the principles of solar cell & its characteristics. (Jan-2013)

Q. 2. Draw the line diagram of photovoltaic system. (June-2013)

Q. 3. Enlist at list five solar devices with their principles of working and application.

(June-2013)

Q. 4. Write short on Pyrheliometer.

Q. 5. Write short on Pyranometer. (Jan-2013)

Q. 6. What is Solar constant? Describe it in brief. (Jan-2013)

Q. 7. Differentiate between liquid flat plate collector and air flat plate collector.

Q. 8. Explain the components of solar cooker with its advantages & disadvantages.



Mr. R. R. Prajapati



DATE:



ASSIGNMENT NO: 5

BIOMASS ENERGY

Q. 1. Explain photosynthesis and characteristics of biomass. (Jan-2013)

Q. 2. Classify biogas plant. Explain any one biogas plant with neat sketch. (Jan-2013)

Q. 3. What is biomass? Describe about the energy content in biomass. (June-2013)

Q. 4. How Bio-energy sources may be useful for rural application, Discuss. (June’13)

Q. 5. Explain about factor affecting generation of biogas plant. (June-2013)



Mr. R. R. Prajapati DATE: 05/09/2013





ASSIGNMENT NO: 6

SEISMIC ENGINEERING AND DISASTER MANAGEMENT

Q. 1. Define seismic engineering? Give suggestions for new construction in earthquake

prone area. (Jan’13, July’13)

Q. 2. What do you mean by disaster? Give classification and explain any one. (Jan’13,

July’13)

Q. 3. Define terms:

1. Aftershock 2. Foreshock 3.Epicenter 4. Focus

5. Meridian 6. Pole of earth 7. Radiosity 8. Seismology

9. Seismograph 10. Richter scale 11. Seismometer



Mr. R. R. Prajapati

Assignment of Engineering Chemistry (3300006)

RPP-2013

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Science & Humanities Department, N.G.Patel Polytechnic, Isroli. Subject: Engineering Chemistry (3300006)

Assignment :1 Topic: Lubricants

1. Define Lubricant and write the Function of Lubricant.

2. Define Lubrication and Explain types of lubrication.

3. Explain Fluid film Lubrication.

4. Explain Boundary Lubrication.

5. Write Classification of Lubricants with Example.

6. Write the uses of Solid Lubricant.

7. What Consideration is made while selecting a Lubricant for -----

(1) Cutting tools (2) Gears (3) Steam Turbines.

8. Define- following terms.

Note: Submit within 10 days after course covered during class room teaching.

Viscosity

Viscosity Index,

Flash Point,

Fire Point,

Pour Point,

Cloud Point,

Acid Number,

Saponification No.

Emulsification number

Oiliness.


RPP-2013

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Assignment –2 Topic: Chemical Bonding & Catalyst

1. Define Hydrogen bond Give its types and explain its importance / Significance.

2. Explain theory of valances.

3. Explain Co- Volant bond with Suitable Example.

4. Explain Coordinate covalent bond with Suitable Example.

5. Explain Metallic bond with Suitable Example.

6. Explain Ionic bond with Suitable Example.

7. Explain Hydrogen bond with an Example.

8. Draw the structure of NaCl & CsCl.

9. Define: Ionic bond, Vander waal’s force of attraction

10. Give the Structure of P4 , S8 , Diamond, Graphite, Mica, Asbestos and Quartz.

11. Give Full name of FCC, BCC & HCP

12. Which Factors Affecting Strength of Vander Waal’s Forces of attraction why

melting Point of P4 is less than S8.

13. List the types of Chemical bond.

14. Give Electronic Configuration H to Zn (all).

15. What is Catalysis? Give the types of catalysis with suitable examples.

16. What is Catalyst? Give the types of catalyst with suitable examples.

17. Give the industrial application of Catalyst.

18. Explain theories of Catalysis.

1. Intermediate compound formation theory

2. Adsorption theory



RPP-2013

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Assignment-3 Topic: Concepts of Electro Chemistry

Answer the Following question. 1. What is Ionization and degree of Ionization writes factors affecting on degree of

Ionization.

2. Explain Strong electrolyte and weak electrolyte with suitable example.

3. What is PH? Write (Application) importance of PH in various filed.

4. Define- Buffer solution with suitable example.

5. Write Application of Buffer solution.

6. Write mechanism of buffer solution.

7. Explain- Electro refining, Electrotyping & Electro plating.

8. Calculate PH of 0.002M HCl Solution.

9. Calculate the PH 0.001M H2SO4 Solution.

10. Calculate PH of (i) 0.25M HCl (ii) 0.04M NaOH.

11. Calculate the PH of 0.01M Al (OH) 3 Solution.

12. Calculate the PH of 0.02M H2SO4

13. Calculate the PH of N/50 N HCl Solution.

14. Explain Standard Hydrogen electrode with neat sketch.

15. Explain construction, working and principle of electrochemical cell.

16. Give the function of salt bridge in electrochemical cell.

17. Describe the application of electrochemical series.

18. Explain Nernst equation.

19. Explain first & Second law of Faraday.

20. Give the industrial application of electrolysis.

21. Define & Give unit : (1) Specific Conductivity (2) Equivalent Conductivity

(3) Molar Conductivity.



RPP-2013

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Assignment-4

Topic: FUEL AND COMBUSTION

Give the answer of following Questions.

1. Defined the terms - Fuel, Calorific value, Octane number, Cetane number, Combustion.

2. Explain- Bomb calorimeter method use to determine calorific value of fuel.

3. Write classification of fuel.

4. Write classification of coal.

5. Explain briefly -the proximate analysis and ultimate analysis of coal.

6. Describe refining of crude petroleum.

7. Write a note on power alcohol and Bio-Diesel.

8. Write a short note on CNG, LPG, and LNG.

9. 2.5gm.of a fuel sample was taken into a bomb calorimeter having water equivalent of

385gms and on complete combustion of solid fuel the temperature of 3500gms of water

was raised by 26.5 to 29.2 0c. Calculate the calorific value of fuel.

10. Sample of coal has the following percentage composition

C=82%, H=4%, N=3%,S=2%, O=5%, Ash=4% calculate HCV and LCV using

Dulong’s formula.



RPP-2013

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Assignment-5 Topic: Polymers, Elastomers & Insulating material. 1. Define terms- Polymer, Monomer, Polymerization, Elastomers, and Insulating Material.

2. Write Classification of Polymer according to their structural formula.

3. Write difference between thermoplastic and thermosetting polymer.

4. Explain the type of polymerization.

5. Write Synthesis, Properties and uses of following:

a) Polyethylene

b) Polystyrene

c) PVC

d) Orlone

e) Teflon,

f) Bakelite

g) Epoxy Resins.

6. What is Vulcanization of Rubber?

7. Write Synthesis, Properties and uses of following:

a) Buna- S

b) Buna-N

c) Neoprene Rubber.

8. Write Classification of Insulating materials.

9. Write uses and Properties of Thermo coal and glass wool.


RPP-2013

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Assignment-6

Topic: Electrical Energy Sources

1. Define the terms-Primary cell, Secondary cell and Battery.

2. Write deference between primary cell and secondary cell.

3. Explain construction and working of dry cell.

4. Write construction and working of Lead storage Battery.

5. Write a note on Fuel cell.

6. Explain construction and uses of Ni-Cd cell.

7. Write a short note on solar cell or Photovoltaic cell.

Assignment-7

Topic: Corrosion of metal and its prevention

1. Explain Redox reaction with suitable example.

2. Define Electrochemical cell Explain Construction & working of Electrochemical cell

with figure.

3. Explain the Standard hydrogen electrode giving construction and it’s working.

4. What is electrochemical (emf) series?

5. Explain-Atmospheric Corrosion

-Pitting Corrosion

-Water line Corrosion

-Crevice Corrosion

6. Give factors affecting on Corrosion

7. Explain-Galvanizing and Tinning and -Metal Cladding and Sheradizing.

8. Explain Anodic & Cathodic Protection of metal.

9. Explain briefly- “Control of Corrosion by modification of Design and choice of metal.”

N .G. PATEL POLYTECHNIC, ISROLI · rewrite the following sentences choosing the correct verb form...

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