MANUFACTURING TECHNOLOGY-II

PART-A

1. Give two examples of orthogonal cutting
2. What are the four important characteristics of materials used for cutting tools?
3. Why is it essential that the cutting point of the tool should be level with the spindle center while machining taper on a work-piece
4. What is the difference between a ram type turret lathe and saddle type turret lathe?
5. Under what conditions planning operation would be preferred over other machining processes like milling, broching, shapping, etc
6. What are the common work holding devices used on milling machines?
7. What for lapping is used?
8. State the abrasives used in the manufacture of grinding wheels.
9. What is the difference between incremental and absolute system?
10. What is the role of computer for NC machine tool?
11. What are the factors responsible for built –up edge in cutting tools?
12. What is electro chemical wear in tools?
13. Mention four different types of chucks used in a machine shop.
14. What is rake angle? What is the effect of nose radius in tools?
15. What is up milling and down milling operations?
16. Mention four important factors that influences the selection of grinding wheels.
17. What is roller burnishing process?
18. Define NC
19. Mention the major elements of NC machines.
20. What you know about straight fluted drill and fluted drill?

PART-B

1. Expain the geometry of single point cutting tool with suitable sketches

2. Explain the basic actions of cutting fluids.

3. During the orthogonal cutting, the following data where recorded

      Back rake angle = 25 deg

      Chip thickness = 0.15 mm/rev

      Length of chip = 40 mm

      Length of chip = 100 mm

      Width of chip before cut = 3.5 mm

      Coefficient of friction = 0.75

      Cutting speed Vc = 250 m/mm

      Average shear stress = 250 N/mm

Determine power consumption.

4. Explain the thread cutting operation in a lathe with a neat sketch. Also make a note on knurling, grooving and forming operations in a lathe.

5. Discuss the features of ram type and saddle type turret

6. Explain the features of multi spindle automatics.

7. With the sketches explain the features of the major elements of a twist drill

8. Explain different types of milling cutters

9. Make a note on different types of work holding devices used in a slotting machine.

10. Explain the different types of table drive and feed mechanisms in a planning machine.

11. Explain the salient features of a centre less grinding machine and discuss the different operations that can be carried out in it. Mention some advantages.

12. Briefly discuss about different types of abrasives used in a grinding wheel.

13. Explain the gear shaving, gear honing and gear lapping processes.

14. Discuss the important design features of CNC machine tools. 

15. Write Short notes on:

      i  NC machine tool classification

      ii. APT programming structure

      iii G and M codes

      iv CNC machine Vs Conventional machine

16. Explain the conditions that promote the formation of the following types of chip

      i. Continuous chips without built up edge

      ii. Continuous chips with built up edge

      iii. Discontinuous chip

17. Define the Various tool parts of a single point cutting tool with a neat sketch.

18. What are the slandered angles of cutting tool? Illustrate with an example.

19. Describe some of the methods and equipment for holding work on a lathe.

20. Explain any four commonly used attachments on lathe.

21. Briefly explain the principle of working of the sliding head type single spindle automatic machine.

22. Describe with neat sketch a turret automatic screw machine.

23. State the advantages of Ward-Leonard drive.

24. Explain with a sketch “Fast and Loose pulley” quick return mechanism of a planer table.

25. State the methods of holding milling cutters.

26. Explain simple indexing, compound indexing and differential indexing with suitable example.

27. State the advantages and limitations of broaching.

28. Compare gear hobbing with gear shaping.

29. Explain self-sharpening characteristics of grinding wheel.

30. Describe the use of cutting fluids in grinding.

31. Explain wheel truing and dressing.

32. State a few typical applications where the use of numerical control would be justified.

33. Describe in brief the basic components of a tape-operated NC machine tool.

34. Discuss the advantages of computer numerical control system.

35. What is the difference between positioning machines and contouring machines?

  

CORRUPTION IN EDUCATION

mera desh saaf dharm nirpeksh aur na jane kya kya,achchha lagta hai sun ne mein ki mere desh ki quality bahut hai,nam hai,sabse jyada engineer ,dr.,scientist nikalte hain yaha se.

sawal ye uthta hai ki kitne exam khud qualify karke nikalte hain,kitno par quota ka koi asar nahi padta hai,mein khud ek engineer hoon,govt.engineering college se passout,bahut khush hua tha jab dakhila hua college mein,ki state ke 7 govt.college mein se ek college mera bhi hai,
poori muskurahat 2 din mein he simat gayi,ek namcheen yuvak se meri mulakat ho gayi,kahata hai bhai teri marking kya thi pre test mein ,maine usko apni marking batai,maine poochha aapki kya marking thi,uski marking meri ek tihai thi,mein shant ho gaya ,uske shabd kuchh yun the mere liye,WAISE AGAR KABHI AINSA HUA KI EK DO PAPER BIGAD GAYE TO UNIVERSITY MEIN MERA JUGAD HAI.

mein bhi naya student tha college ka,maine socha ki hoga hoshiyar banda tabhi to itni badi jugad hai,iska pata bhi mujhebade jald lag gaya,ENGINEERING GRAPHICS ke paper mein ,
jab usne mujhse radus ka hindi meaning poochha,lekin ek bad khas thi uske marks mujhse jyada the,
aksar paper mein mujhse code poochha karta paper ka,Mechanicalki spelling paper se dekhkar likhta lekin marks  hamesha mere se jyada aate the uske.

aksar ainsa ho jata hai ki farzi admission karwane wale log hamein mil jate hain ,hum jante hue bhi kuchh khash nahi kar pate hain,system kharab hai ye kah kar palla jhhad lete hain,
lekin kuch had tak sahi bhi hai,hal hi mein meri mulakat ekainse hi farzi paper nikalwane bale se hui name lena uchit nahi samjhta ,uskojab maine daraya ki police wale kabhi na chhodenge tumko,uskajabab kuchh yun tha ,5 sal se is business mein jitna ek police wale ki sal bhar ki incomehoti hai utna unkoek sath diya jata hai,hai kisiki mazal ki apna muh khol de,
jabab kuchh is tarah bhi tha ,mere ladke kai bar pakde gaye aur kuchh ainse cases bhi bataye jinko news par dekha gaya,lekin woh bola kya hua 2 din news par chala fir news bale bhi bhool gaye aur police balon ko to hum bhula hi dete hain,
abhi hal hi mein RTO ke test mein jo bande pakde gaye kya hua unka?
har sal medical test mein hazaro munna bhai baithte  hain kya hota hai unka?
aur na jane kitne hi selection isi binah par hote hain ,
is system ko dekhkar ek hi story yad aati hai-

do student sage bhai hain jo ek hi class mein padh rahe hain,ek ka name ajay hai aur ek ka name vijay hai,ab ajay kafi hoshiyar aur mehnati hai isi ke viprit  vijay padhne mein kamjor aur udhmi ladka hai,class 10th mein vijay kisi karan vash anuttirna ho jata hai aur ajay achche anko ke sath uttirna ho jata hai,ab ajay kafi mehnat karke engineering ka exame pass karke engineer ban jata hai,wahi vijay ko uske pitaji pan ki dukan khulwa dete hain,vijay ki pahchan badhti jati hai aur sath hi gunda gardi bhi badhti jati hai,ek din vijay vidhayak ka chunao jeet jata hai,us kshetra ka vidhyak ban jata hai,aur ajay uske under mein kam karta hai,

JAI HO BHARAT KE EDUCATION SYSTEM KI

 

Short Question and Answers

1. 
   Who led the Bardoli Satyagarha?
   Vithalbhai Patel
2. When did Gandhiji started his Salt March?
   12 March 1930
3. When did Civil Disobedience movement started?
   6 April, 1930
4. Who was the hero of Vaikom Satyagraha?
   K Kelappan
5. Under whose leadership, Koya tribals fought the colonial govt to protect their forest rights during 1922-24?
   Ramachandra Raju
6. What was popular name of Khudai Khidmatgars?
   Red shirts
7. Gandhiji marched from Sabarmati to Dandi with how many followers?
   78
8. Which American journalist reported during the salt satyagraha?
   Webb Miller
9. You planned a fine strategy around the issue of salt: Who said this to Gandhiji?
   Lord Irwin
10. Who was the first president of AITUC?
    Lajpat Rai
11. Who started Dina Bandhu?
    N.M Lokhande
12. Who founded the Working Men’s Club?
    Sasipada Banerjee
13. When was the first strike organized by Indian working class?
    1899
14. When was first Factories Act enacted?
    1881
15. When was Bombay Mill and Millhand’s Association set up?
    1890
16. Which was the first newspaper dedicated to the cause of workers in India?
    Bharat Shramjeevi
17. When was the no tax campaign launched in Bardoli?
    1928
18. Which was the Mopla rebellion epicentre?
    Malabar
19. Who led the Eka movement?
    Madan Pasi
20. When was Oudh Rent Act legislated?
    1921
21. Mangal Pandey was soldier in which army unit?
    Barrackpore
22. Who was the de facto leader of revolt of 1857 at Lucknow?
    Maulavi Ahmadullah
23. Who was the de jure head of the revolt of 1857 at Lucknow?
    Birzis Qadr
24. Where were British forces defeated at Battle for Audh?
    Chinhat
25. Who led the revolt against British in Rohilakhand?
    Khan Bahadur

MATHEMATICS-NEW

ENGINEERING MATHEMATICS 

Note : Attempt any five questions. All questions carry equal marks.

Q.1.show that function eX(cosy=isiny)is an analytic function and find its derivative ?Q.2.find the nature of quadratic eqn form x2+5y2+z2+2xy+2yz+6zx and reduce it to canonical form ?

Q.3.by using newton raphson method find the roots of x4-x-10=0, nearer to x=2 correct to 3 decimal places ?

Q.4.solve equations yb gauss siedal method ?
27x+6y-z=85
6x+15y+2z=42
x+y-2z=101

Q.5.define vector space show that vectors (2,1,4),(1,1,2),(3,1,2) forms a basis R3 ?

Q.6.using regula fals imethod find a real root of the equation xlogx-1.2=0 correct up to 3 places
of decimals ?

Q.7.use bessal formula to find value of y if x=3.75,given ?

X	2.5	3.0	3.5	4.0	4.5	5.0
Y	24.125	22.043	20.22.	18.645	17.234	16.544

 

 

                                                                                          Applied Mathematics-II

UNIT-I

1. (a) State the De-Moiver’s theorem.

(b) Find all the roots of the equation

(i) cos z=2

(ii) tanh z=2

(c) Separate sin^-1 (cosᶿ + I sinᶿ) into real and imaginary parts, where ө is a positive acute angle.

(d) Sum the series:

n sin a +n (n+1) sin 2an (n+1) (n+2) sin 3a+………….∞

                                                        1.2                      1.2.3

UNIT-II

2. (a) Explain briefly the method of variation of parameters.

(b) Solve:

(D²+2) y=x²e^3X+e^X cos2x.

(c) Solve the equation:

(1+x)²d²y+(1+x)dy+y=sin[2log(1+x)]

dx2            dx

   (d) Solve the simultaneous equation:

dx +2y=e^t and dy- 2x=e^-t

dt                      dt

 UNIT- III 

3. (a) Write the relation between Beta and  Gamma function.

(b) Evaluate the integral by changing the order of integration.

a  a

          ʃ  ʃ             y²         dxdy

0 √ax    √y4- a²x²

(c) Evaluate:

∞  ∞

          ʃ     ʃ  e^—(x²+y²⁾ dxdy

0      0

by changing iro polar co-ordinates.

Hence show that:

∞

ʃ  e^—x2 dx= √∏   

0                       2

(d) Find by double integration, the area lying between the parabola

Y=4x-x² and the line y = x.

 UNIT- IV

4. (a) State the Green’s theorem in the plane.

(b) Prove that:

A.V (B.V 1)=3(A.R)(B.R.)  _ A.B

r         r⁵                r³

          Where A and B is constant vectors.

R=xI + yJ + K and r = √x² + y² +z²

(c) A vector field is given by:

F=(x² – y² + x)I – (2xy +y)J

Show that the Field is irrotational and find it’s scalar potential. Hence evaluate the line integral

from (1,2) to (2,1).

(d) Verify stokes theorem for the vector field

F=(2x – y) I – yz²J – y²zK on the upper half surface of x² + y¹ + z²= 1 bounded by its projection on the x y palne.

 UNIT- V 

5. (a) Write the relation between roots and coefficient of the equation.

a₀xⁿ + a₁x^n-1 + a₂x^n-2 +……….+ a_n-1x + a_n = 0

(b) If aβϒ be the roots of x³ + px + q = 0

Show that:

(i) a³ + β³ +ϒ³ = 5 aβϒ ∑ aβ

(ii) 3∑a²∑a⁵= 5∑ a∑ a⁴

(c) Show that the equation x⁴ – 10x³ + 23x² – 6x ─15= 0 can be transformed into reciprocal equation by diminishing the roots by 2. Hence solve the equation.

(d) Solve the cardon’s method, the equation:

27x³ + 54x² + 198x – 73= 0

1. (a) If _y = (sin^-1 x)², show that:

(1-x²)y_n+2-(2n+1)xy_n+1-n²y_n=0

(b) Using Taylor’s theorem expresses the polynomial

2x³ + 7x² 4x—6 in powers of (x-1).

(c) Test the convergence or divergence of the series:

∞

∑ [√  n²=1 -  n]n=1

 UNIT-II

2. (a) Find the reduction formula for : I„ = ʃ sec” xdx

    (b) Find the area of the ellipse:  x² + y²

a²    b²

(c) Find the volume of a sphere of radius.

 UNIT-III

3. (a) If u=e^xyz, find the value of     ∂³z     

∂x∂y∂z

(b) If u=sin^-1 X²+y²  prove that.

x+y

X ∂u + ∂u = tan u

∂x     ∂y

(c) Find the volume of the greatest rectangular parallelepiped that can be inscribed in the ellipsoid

X² + y² + z² = 1

a²    b²    c²

 UNIT- IV

4. (a) Change the order of integration in:

I = ʃ ₀¹ ʃ₂^2-x x y dx dy.

(b) Find the volume of the tetrahedron bounded by co-ordinate planes and the plane.

x + y + z = 1.

a    b   c

    (c) Show that ʃ₀^x/2 √sinᶿdᶿ   * ʃ₀^x/2 dᶿ      = ∏.

                                                                √sinᶿ

UNIT- V

5. (a) Show that: V² (rⁿ) =n (n+1) r^n-2.

(b) Verify stokes theorem for F = (x²+y²)j-2xyj taken around the rectangle bounded by the lines.

X=±a, y=0, y=h.

(c) If is any closed surface enclosing a volume V and

F = axi+byj+czk. Prove that   f_S FNdS=(a+b+c)^V.

THERMODYNAMICS PRACTICE

UNIT- I

1. (a) (i) State three corollaries of first law of thermodynamics.

(ii) Explain flow work.

(b) (i)Derive the steady flow energy equating giving basic assumption.

(ii)Explain system and control volume approach for thermodynamics analysis.

(c)  0.25 kg of air at a pressure of 140 kn/m² occupies 0.15 _m³ and from this condition it is compressed to 1.4 MPa according to the law p^vlJ5 =constant Determine.

(i) The change of internal energy of air.

(ii) The work done on or by the air.

(iii)The heat received or rejected by the air.

Take C_P =1.005 Kj/kg K, C_v = 0.718 kJ K.

 UNIT- II

2. (a) (i) State two corollaries of second law of thermodynamics.

(ii) Differentiate between heat engine and heat pump.

(b) (i) Explain the theorem of ‘Clausius Inequality’.

(ii) Describe reversed Cannot cycle taking example of refrigerator and heat pump. Also give their performance parameters.

(c)      In a dual cycle, the pressure and temperature at the beginning of compression are 1.03 bar and 303 K. Maximum pressure is 41.4 bar and temperature at the end of heat supply is 1666 K.

Find:-

(i)The total heat supplied per kg of air.

(ii) The net work done per kg of air.

(iii) Thermal efficiency.

Assume C_P = 1.005 kJ/kg K, C_V = 0.718 kJ/kgK.

UNIT-III

3. (a) (i) Explain the phase transformation of water at 1 atmospheric pressure.

(ii) Discuss Economizer with a neat diagram.

(b) (i) Differentiate between boiler mountings and access­ories giving 3 examples of each.

(ii) In Mollier diagram, show following processes adiabatic, isoenthalppic and isothermal process.

(c) 0.9 kg of water vapour, initially at a pressure of 15 bar and a temperature of 250°c, expand reversibly and adia- Bartically to 1.5 bar. Find the final temperature, work done, heat transferred and change of entropy.

UNIT- IV

4. (a) (i) Discuss the difference in working of a shaper and Planer

(ii) Explain the arc welding process.

(b) (i) Explain quick return mechanism of a shaper.

(ii) Discuss the purpose of Electrode coating giving some important constituents for coating.

(c) Classify different types of Lathe, make a labeled diagram And also explain 3 major operations performed by it.

UNIT- V

5.  (a) Explain the stress-strain curve of ductile material showing all the specific points.

(b) Explain the testing procedure of material in case of tensile loading.

(c) (i) A load of 4000 N has to be raised at the end of a steel Wire. If the unit stress in the wire must not exceed 80 N/mm^2.  What is the minimum diameter of wire required? What will be the extensions of 4 meter length of wire? Take £= 2 X io⁵N/mm².

(ii) A material has a Young’s Modulus of 1.25 X 10⁵N/mm² and a poisson’s ratio of 0.25.

Calculate the Modulus of Rigidity and the Bulk Modulus.UNIT- I

1. (a) (i) State three corollaries of first law of thermodynamics.

(ii) Explain flow work.

(b) (i)Derive the steady flow energy equating giving basic assumption.

(ii)Explain system and control volume approach for thermodynamics analysis.

(c)  0.25 kg of air at a pressure of 140 kn/m² occupies 0.15 _m³ and from this condition it is compressed to 1.4 MPa according to the law p^vlJ5 =constant Determine.

(i) The change of internal energy of air.

(ii) The work done on or by the air.

(iii)The heat received or rejected by the air.

Take C_P =1.005 Kj/kg K, C_v = 0.718 kJ K.

 UNIT- II

2. (a) (i) State two corollaries of second law of thermodynamics.

(ii) Differentiate between heat engine and heat pump.

(b) (i) Explain the theorem of ‘Clausius Inequality’.

(ii) Describe reversed Cannot cycle taking example of refrigerator and heat pump. Also give their performance parameters.

(c)      In a dual cycle, the pressure and temperature at the beginning of compression are 1.03 bar and 303 K. Maximum pressure is 41.4 bar and temperature at the end of heat supply is 1666 K.

Find:-

(i)The total heat supplied per kg of air.

(ii) The net work done per kg of air.

(iii) Thermal efficiency.

Assume C_P = 1.005 kJ/kg K, C_V = 0.718 kJ/kgK.

UNIT-III

3. (a) (i) Explain the phase transformation of water at 1 atmospheric pressure.

(ii) Discuss Economizer with a neat diagram.

(b) (i) Differentiate between boiler mountings and access­ories giving 3 examples of each.

(ii) In Mollier diagram, show following processes adiabatic, isoenthalppic and isothermal process.

(c) 0.9 kg of water vapour, initially at a pressure of 15 bar and a temperature of 250°c, expand reversibly and adia- Bartically to 1.5 bar. Find the final temperature, work done, heat transferred and change of entropy.

UNIT- IV

4. (a) (i) Discuss the difference in working of a shaper and Planer

(ii) Explain the arc welding process.

(b) (i) Explain quick return mechanism of a shaper.

(ii) Discuss the purpose of Electrode coating giving some important constituents for coating.

(c) Classify different types of Lathe, make a labeled diagram And also explain 3 major operations performed by it.

UNIT- V

5.  (a) Explain the stress-strain curve of ductile material showing all the specific points.

(b) Explain the testing procedure of material in case of tensile loading.

(c) (i) A load of 4000 N has to be raised at the end of a steel Wire. If the unit stress in the wire must not exceed 80 N/mm^2.  What is the minimum diameter of wire required? What will be the extensions of 4 meter length of wire? Take £= 2 X io⁵N/mm².

(ii) A material has a Young’s Modulus of 1.25 X 10⁵N/mm² and a poisson’s ratio of 0.25.

Calculate the Modulus of Rigidity and the Bulk Modulus.

ENGINEERING MATHEMATICS

Applied Mathematics-II

UNIT-I

1. (a) If x + 1 = 2 cos ө and y + 1= 2cos ө

x                                x

Show that one of the value of

xmyn +        1        is 2cos(m ө + nф) 

                         xm + yn 

(b) If (ө + iф) e^a show that

ө = (n + 1/2)∏/2                    and

          ф=1 log tan (∏  + a)

2               4     2

(c) Sum the series by C+ is method:

xsin ө – 1  x² sin2 ө +1x³ sin 3ө ………∞

2                     3

 UNIT- II

2. (a) Solve the equation:

d²y – 2dy + y= xe^x sin x.

dx²      dx

(b) Solve by the method of variation of parameter:

d²y + y= x sin x

dx²

(c) Solve the equation

x²d²y – 3xdy + 4y= (1+x)²

dx²        dx

 UNIT- III

3. (a) Change the order of the integration in

2-x

^lʃ₀ ʃ xy dx dy

and hence evaluate same.

(b) Find the volume bounded by the cylinder x² + y² = 4 and the planes

y + z = 4 and z = 0

(c) Solve  ʃ ʃxy(x² + y²)^n/2 dxxy over the positive quadrant of

x² + y² = 4 sup posin g n + 3> 0

 UNIT- IV

4. (a) find the work done in moving a particle in the force field:

F= 3x³I + (2xz – y)j + zk along:

(i) the straight line form (0,0,0) to (2,1,3)

(ii) the curve defined by x² =4y, 3x² =8z from x = 0 x = 2

(b) Evaluate divergence & curl of

F = 3x² I + 5xy² j +xyz³ K

At the point (1, 2, 3)

(c) Use divergence theorem to evaluate ʃF ds where

F = 4xl – 2y² j + z² K and S is the surface bounding the region

x² + y² = 4, z = 0, z = 3

UNIT-V

5. (a) Solve the equation by Ferrari’s method:

x⁴  - 12x² + 41x² – 18x- 72 = 0

(b) Solve the equation by Cardin’s method:

x³ – 15x – 126 = 0

(c) Solve x³ – 4x² – 20x + 48 = 0 given that the roots a and β are connected by the relation a + 2β = 0Applied Mathematics-II

UNIT-I

1. (a) If x + 1 = 2 cos ө and y + 1= 2cos ө

x                                x

Show that one of the value of

xmyn +        1        is 2cos(m ө + nф) 

                         xm + yn 

(b) If (ө + iф) e^a show that

ө = (n + 1/2)∏/2                    and

          ф=1 log tan (∏  + a)

2               4     2

(c) Sum the series by C+ is method:

xsin ө – 1  x² sin2 ө +1x³ sin 3ө ………∞

2                     3

 UNIT- II

2. (a) Solve the equation:

d²y – 2dy + y= xe^x sin x.

dx²      dx

(b) Solve by the method of variation of parameter:

d²y + y= x sin x

dx²

(c) Solve the equation

x²d²y – 3xdy + 4y= (1+x)²

dx²        dx

 UNIT- III

3. (a) Change the order of the integration in

2-x

^lʃ₀ ʃ xy dx dy

and hence evaluate same.

(b) Find the volume bounded by the cylinder x² + y² = 4 and the planes

y + z = 4 and z = 0

(c) Solve  ʃ ʃxy(x² + y²)^n/2 dxxy over the positive quadrant of

x² + y² = 4 sup posin g n + 3> 0

 UNIT- IV

4. (a) find the work done in moving a particle in the force field:

F= 3x³I + (2xz – y)j + zk along:

(i) the straight line form (0,0,0) to (2,1,3)

(ii) the curve defined by x² =4y, 3x² =8z from x = 0 x = 2

(b) Evaluate divergence & curl of

F = 3x² I + 5xy² j +xyz³ K

At the point (1, 2, 3)

(c) Use divergence theorem to evaluate ʃF ds where

F = 4xl – 2y² j + z² K and S is the surface bounding the region

x² + y² = 4, z = 0, z = 3

UNIT-V

5. (a) Solve the equation by Ferrari’s method:

x⁴  - 12x² + 41x² – 18x- 72 = 0

(b) Solve the equation by Cardin’s method:

x³ – 15x – 126 = 0

(c) Solve x³ – 4x² – 20x + 48 = 0 given that the roots a and β are connected by the relation a + 2β = 0