Page 1 of1 Code No: R17A0501 MALLA REDDY COLLEGE OF ENGINEERING & TECHNOLOGY (Autonomous Institution – UGC, Govt. of India) I B.Tech I Semester Supplementary Examinations, June -2022

Computer Programming with C (ME, ECE, CSE, IT ) Roll No Time: 3 hours Max. Marks: 70 Answer Any Five Questions

All Questions carries equal marks.

*** 1 Describe the process of program development .

[14M ] 2 What are the three differences between the conversion codes for input formatting and output formatting? Explain them with examples.

[14M ] 3 Discuss various storage classes of C.

[14M ] 4 Discuss the different ways of passing arrays as a parameter to a function.

[14M ] 5 Discuss dynamic memory management in C.

[14M ] 6 Define an array ? Explain different types of an array with example.

[14M ] 7 Explain in detail applications of pointers with examples.

[14M ] 8 Define a structure of arrays. Write code to read values in to this structure.

[14M ] ********** R17 Code No: R17A0013 MALLA REDDY COLLEGE OF ENGINEERING & TECHNOLOGY

(Autonomous Institution – UGC, Govt. of India) I B.Tech I Semester Supplementary Examinations, June -2022 Engineering Chemistry (EEE, ECE & IT ) Roll No

Time: 3 hours Max. Marks: 70 Answer Any Five Questions All Questions carries equal marks.

*** 1 Write the construction and working function of Calomel electrode. Explain the determination of pH using Calomel electrode.

[14M ] 2 Discuss the construction, working function and applications of H2-O2 fuel cells.

[14M ] 3 Explain the chemical reactions involved in electrochemical corrosion (Wet corrosion).

[14M ] 4 Discuss various factors effecting on rate of corrosion.

[14M ] 5 Explain prope rties of lubricants: a) Flash &fire part b) Cloud & pour point c) Viscosity and viscosity index.

[5M] [5M] [4M] 6 What are biodegra dable polymers? Describe the preparation, properties & applications of Polylactic acid .

[14M ] 7 What is Desalination of water? Explain reverse Osmosis method.

[14M ] 8 Explain refining of petroleum with a neat diagram. [14M ] ********** R17 Page 1 of 2

Code No: R17A0302 MALLA REDDY COLLEGE OF ENGINEERING & TECHNOLOGY (Autonomous Institution – UGC, Govt. of India) I B.Tech I Semester Supplementary Examinations, June -2022 Engineering Drawing

(ECE, CSE, IT ) Roll No Time: 3 hours Max. Marks: 70 Answer Any Five Questions All Questions carries equal marks.

*** 1 Draw epicycloid of a rolling circle 40mm diameter which rolls outside of the circle of 150 mm diameter for one complete revolution clockwise. Draw the tangent and normal at any point on the curve. [14M ] 2 Construct a diagonal scale showing hectometer, decameter and meter in which 1

cm long line represent 50m and long enough to measure up to 1km. F ind the R.F and mark a distance of 5 Hectometer, 3 decameter, 7m on it. [14M ] 3 A point A is 30 mm above the HP and in the first quadrant. Its shortest distance from the intersection of both the reference planes is 50 mm. Draw the projections of the point and determine its distance from the VP. [14M ]

4 Draw the projections of straight line AB 60 mm long parallel to H.P and inclined at an angle of 40° to V.P. The end A is 30 mm above HP and 20mm in front of VP. [14M ] 5 A pentagonal plane of sides 25mm is having a side both on HP and VP. The

surface of the lamina is inclined at an angle of 60° with HP. Draw the top and front views of the plane .

[14M ] 6 A pentagonal pyramid, base 25mm side and axis 50 mm long has one of its triangular fac es in the VP and the edge of the base contained by that face makes an angle of 30° with the HP. Draw its projections .

[14M ] 7 Draw isometric view of a hexagonal prism having a base with 30 mm side and a 70mm long axis resting on its base on the HP. With an edge of the base parallel to the VP when (a) using Box Methods

(b) using Off -set Method?

[14M ] R17 Page 2 of 2 8 Draw the front view, Top view and Side view of the given figure?

All Dimensions are in MM.

[14M ] ********** Page 1 of 2 Code No: R17A0301 MALLA REDDY COLLEGE OF ENGINEERING & TECHNOLOGY

(Autonomous Institution – UGC, Govt. of India) I B.Tech I Semester Supplementary Examinations, June -2022 Engineering Mechanics (ME) Roll No

Time: 3 hours Max. Marks: 70 Answer Any Five Questions All Questions carries equal marks.

*** 1 a) Explain the terms: i) Moment of force ii) Resultant of force systems.

b) Determine the resultant of concurrent forces shown in the figure below.

[4M] [10M ] 2 a) What do you understand by the term “parallel forces”? Discuss their classification ?

b)A cord supported at A and B carries a load of 10 kN at D and a load of W at C as shown in figure . Find the value of W so that CD remains horizontal .

[4M] [10M ] 3 a)Define free body diagram, Transmissibility of a force and resultant of a force.

b) Find the tension i n each cable for the given Figure [4M] [10M ] R17 Page 2 of 2

4 a). State the laws of friction b) The 500N block shown in fig is in contact with the incline. The coefficient o f static friction is 0.25. Compute the horizontal force P necessary to (a) just start the block up the incline or

(b) just prevent motion down the incline.

[4M] [10M ] 5 a) Find the centroid of the plane lamina of L -shape having base length 35mm and height 45mm? .

b)Locate the centroid of shaded area as sh own in Figure [6M] [8M] 6 a) Explain the significance of the Pappus theorms.

b)Determine the centroid of the area shown in figure [4M] [10M ] 7 a) Define ‘Mass moment of inertia’ and ‘Radius of gyration’.

b)Determine the moment of inertia o f a rectangular plate of size a * b and thickness’ t’ about its centroidal axes [4M] [10M ] 8 A bullet weighs 0.5 N and moving with a velocity of 400 m/sec hits centrally a 30 N

block of wood moving away at 15m/sec and gets embedded in it. Find the velocity of bullet after the impact and amount of kinetic energy lost. [14M ] ********** Page 3 of 2 Page 1 of 1

Code No: R17A0011 MALLA REDDY COLLEGE OF ENGINEERING & TECHNOLOGY (Autonomous Institution – UGC, Govt. of India) I B.Tech I Semester Supplementary Examinations, June -2022 Engineering Physics -I

(ME, CSE & IT ) Roll No Time: 3 hours Max . Marks: 70 Answer Any Five Questions All Questions carries equal marks.

*** 1 A. Define the Interference and describe the theory of interference fringes B. Obtain the conditions for the interference of light reflected by a thin parallel film.

[6M] [8M] 2 A. What is meant by diffraction of light B. Explain the resolving power of the plane diffraction grating . Obtain an expression for the resolving power of grating

[4M] [10M ] 3 A. What are the characteristics of lasers B. Explain the construction and working of He -Ne l aser with relevant diagrams?

[4M] [10M ] 4 A. Draw the block diagram of an optical fiber communication system and explain the function of each block

B. What is attenuation? Explain about optical fiber losses?

[8M] [6M] 5 A. What is the physical significance of wave function ψ.

B. Derive time independent Schrodinger wave equation.

[6M] [8M] 6 A. Define matter waves. Write the properties of matter waves.

B. Explain construction and working of G.P experiment to prove that the moving matter is associated with a wave.

[4M] [10M ] 7 Discuss the Kronig -Penny Model in detail with energy spectrum of electron .

[14M ] 8 A. What is donors and acceptors give two examples for each B. Derive an expression for the carrier concentration of an n -type semiconductor. and how Fermi level varies with temperature and doping concentration [4M]

[10M ] ********** R17