#### R18 I Year II Sem Regular-Supplementary, October-November 2020

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Page 1 of 2 Code No: R18A0201 MALLA REDDY COLLEGE OF ENGINEERING & TECHNOLOGY (Autonomous Institution – UGC, Govt. of India) I B.Tech II Semester Regular/Supplementary Examinations, Oct/Nov 2020

Basic Electrical Engineering (EEE, ECE, CSE & IT) Roll No Time: 2 hours Max. Marks: 70 Answer Any F our Questions

All Questions carries equal marks .

*** 1(a) Define i) Charge ii) Current iii) Voltage (b) Determine the value of I 1 in the circuit using so urce transformation technique.

2(a) Define Ohm’s Law and List the applications of it.

(b) Determine the total current in the circuit 3(a) Using nodal analysis, determine the node voltages in the following network (b) Discuss the steps to determine the Thevenin’s equivalent circuit.

4(a) Write the mesh equations and determine the currents in the circuit shown in the fig. R18 Page 2 of 2 (b) Find the current through 3Ω resistor using superposition theorem in the circuit 5(a) Determine the average value and rms value of the waveform shown in the fig.

(b) An inductive coil having negligible resistance and 0.1H inductance is connected across an AC supply of 220V, 50Hz. Calculate (i) Inductive reactance (ii) RMS value of Current (iii) Power factor (v) write down the equations for voltage and current.

6(a) An alternating current is given by i=14.14 sin(377 t).

Find (i) rms value of the current ii) frequency (iii) instantaneous value of the current at t=3 ms (b) Define resonant frequency and derive the equation of resonant frequency of parallel RLC circuit 7(a) Describe the principle of operation of a generator.

(b) List the common features of rotating electrical machines.

8(a) Describe the characteristics of batteries.

(b) Illustrate the operation of Miniature Circuit Breaker (MCB) ********** Page 1 of 1 Code No: R18A0013 MALLA REDDY COLLEGE OF ENGINEERING & TECHNOLOGY

(Autonomous Institution – UGC, Govt. of India) I B.Tech II Semester Regular/Supplementary Examinations, Oct/Nov 2020 Engineering Chemistry (EEE, ECE, CSE & IT) Roll No

Time: 2 hours Max. Marks: 70 Answer Any F our Questions All Questions carries equal marks .

***** 1 a) What is meant by ba ttery? Explain the construction and working of lead acid cell with cell reactions .

b) What is electrochemical corrosion? Explain the mechanism of evaluation of hydrogen with suitable example.

2 a) Write a short note on Galvanic cell.

b) What is tinning process? Explain.

3 a) List out the Salient features of Crystal field theory.

b) Show th rough a diagram and explain the splitting of d -orbital in octahedral complexes.

4 a) Explain the Salient features of Molecular orbital theory.

b) Draw and explain the MOT diagram for O 2 Molecule.

5 a) How is hard water softened by ion exchange process?

b) Give the principle of reverse osmosis. Give the main advantage of reverse osmosis over ion -exchange process.

6 a) Define hardness of water. How hardness of water is classified? Express the units of hardness of water. What is the relationship between them?

b) Give the chemical reactions involved in the determination of hardness of water by EDTA method. What is the function of alkaline buffer in the determination of hardness of water by EDTA Method?

c) Explain briefly about disinfection of water by chlorination .

7 a) What is Markownikoff’s addition? Explain briefly with suitable examples.

b) What are reduction reactions? Explain briefly reduction of carbonyl compounds using LiAlH 4.

c) What is substitution reaction?

8 a) Discuss the term calorific value. Give its unit. Justify the statement “Petroleum is a better fuel than coal”. What are characteristics of a good fuel?

b) Explain proximate analysis of coal and give its significance?

********** R18 Page 1 of 2 Code No: R18A0301 MALLA REDDY COLLEGE OF ENGINEERING & TECHNOLOGY (Autonomous Institution – UGC, Govt. of India)

I B.TechII Semester Regular/Supplementary Examinations, Oct/Nov 2020 Engineering Graphics (ME & AE) Roll No Time: 2 hours Max. Marks: 70

Answer Any F our Questions All Questions carries equal marks .

1 Draw an ellipse when the distance of its focus from its directrix is 50mm and eccentricity is 2/3. Aslo draw a normal and tangent to the ellipse at a point 70mm from the directrix 2 A line of 1 centimeter represents an actual length of 4 dm. Draw a plain scale and mark a distance of 6.7 m on it.

3 Draw the all possible projections of point N , equal distance 60mm from both the reference planes.

4 A 70 mm long line PQ, has its end P 20 mm above the H.P. and 30 mm in front of the V.P. The line is inclined at 450 to the H.P. and 300 to the V.P. Draw its projections 5 A hexagonal plane of side 30mm has an edge on the H.P. Its su rface is inclined at

450 to the H.P. and the edge on which the plane rests is inclined at 300 to the V.P.

Draw its projections.

6 A cylinder of base diameter 50 mm and axis 70 mm has a generator in the V.P.

and inclined at 450 to the H.P. Draw its projec tions 7 Draw the isometric view of a hexagonal prism of base side 30 mm and axis 70mm.

The prism is resting on its base on the H.P. with an edge of the base parallel to the V.P.

8 Draw three views of the object shown in fig. All dimensions are in mm R18 Page 2 of 2 Page 1 of 2 Code No: R18A0002

MALLA REDDY COLLEGE OF ENGINEERING & TECHNOLOGY (Autonomous Institution – UGC, Govt. of India) I B.TechII Semester Regular/Supplementary Examinations, October/Novembe Professional English (Common to all branches)

Roll No Time: 2 hours Max. Marks: 70 Answer Any F our Questions All Questions carries equal marks .

**** 1 Describe your favorite place in 200 words .

2.a b Highlight various components of an effective paragraph.

Write a paragraph on the topic “ Health is W ealth ” following all the conventions of writing a paragraph .

3 Write short notes on the following with regard to effective oral presentation.

a. Selection of topic b. Preparation of slides c. Language ability d. Body language/gestures e. Interactio n with the audience

f. Eye contact g. Facial expressions 4.a 4.b Change the following complex sentences into simple sentences.

a. After she had learned her lessons, she went out to play.

b. While he was walking along the street, he saw a dead cobra.

c. Although she was wealthy and educated, she never made a name.

d. If he follows my advice, he will win his object.

e. As she was driven out of her country, she sought shelter in a foreign land.

f. He wore a new shirt yesterday that he had bought at the airport .

g. He confessed that he was guilty .

Rewrite the following sentences after making necessary corrections .

a. They have watch ed that movie last Monday.

b. Where he can find a restaurant?

c. He lives in United States.

d. One of my teacher is from London.

e. Let’s go by walk.

f. Can I have a question?

g. This is the worse day of his life. R18 Page 2 of 2 5 Elaborate on the things to do and not to do to be successful in the job interviews.

6.a b Change the following sentences from direct to indirect speech.

a. Anitha said to Naveen , “Practice medi tation.” b. My mother said to me , “How intelligent you are !” c. The commentato r said, “What a beautiful bowling! ” d. He said to her , “I took her permission .” e. She said to me , “I am waiting for you.”

f. Doctor said to her , “She is doing well.” g. He said to her father , “Sh e has posted the letter .” What is a cover letter? Write a cover letter to the HCL company as if your sending resume.

7.a b What are the challenge s commonly faced by candidates in telephonic interview s and how one can overcome them?

Complete the following sentences using an appropriate auxiliary verb.

a. Tell me, (be) you coming to the party?

b. What (do) you do every Sunday?

c. I (model) like to watch TV. There is a good film on.

d. She (do) not want to stay at home. She wants to go out with her friends.

e. He (have) called me twice this morning.

f. What (do) she do in her free time?

g. Where (do) they go yesterday?

8. Prepare an eye-catching resume for the following notification assuming that you meet the qualifications skills and experience.

For the position of (your choice) With/without experience.

Qualification: B.Tech with excellent academic record Send your latest resume to The HR Manager, Name of the company, Mumbai, India, within 15days f rom the date of advertis ement .

Page 1 of 1 Code No: R18A0015 MALLA REDDY COLLEGE OF ENGINEERING & TECHNOLOGY (Autonomous Institution – UGC, Govt. of India) I B.Tech II Semester Regular/Supplementary Examinations, Oct/Nov 2020

Engineering Physics (ME & AE) Roll No Time: 2 hours Max. Marks: 70 Answer Any F our Questions

All Questions carries equal marks .

*** 1 What is simple harmonic motion? Derive an expression for motion of a simple harmonic oscillator.

2 Derive an equation to describe the position of a damped harmonic oscil lator at instant of time.

3 a) What are Newton’s rings? Describe and explain formation of Newton’s rings in reflected monochromatic light.

b) Newton’s rings are observed between a convex lens and a plane glass plate. The diameter of nth and (n+5)th rings are 11.37 and 14.28 units, respectively. Find the diameter of (n+14)th ring.

4 a) Define resolving power of a microscope. Derive an expression for it.

b) Calculate the resolving power of a telescope whose lens is of diameter 200 in. Where wavelength i s 5.5 x 10-5 cm.

5 a) Obtain an expression for density of states b) Distinguish between semiconductors and insulators 6 a) With a neat diagram discuss Kronig -Penny model b) What is the concept of effective mass of an electron ?

7 a) Derive an equatio n for Calusius -Mosotti relation .

b) What is Bohr M agneton? How it is related to magnetic moment of an electron?

8 a) Explain population inversion.

b) With a neat diagram explain construction and working principle of He-Ne laser system.

********** R18 Page 1 of 2 Code No: R18A0022 MALLA REDDY COLLEGE OF ENGINEERING & TECHNOLOGY

(Autonomous Institution – UGC, Govt. of India) I B.TechII Semester Regular/Supplementary Examinations, October/Novembe Mathematics-II (Common to all branches) Roll No

Time: 2 hours Max. Marks: 70 Answer Any F our Questions All Questions carries equal marks .

***** 1 a) Find a real root of 072 3=−++ x x x correct to two decimal places by using Bisection method b) The population of a town in the decimal census was given below Estimate the population for the year 1895 Year x 1891 1901 1911 1921 1931

Population y 46 66 81 93 101 2 a) Using Newton - Raphson method to find the root of the equation 0 3=−x ex that lies between 0 and 1 b) Apply Lagrange’s interpolation formula find f(36), given that 3)38(,13 )34(,30 )30( = −= −= f f f and 18)42(= f

3 a) Evaluate dxx∫20sinπ by using simpson’s31 rule b) Using Taylor series, find )1.0(y , Given that xydxdy+=1 and 1)0(= y

4 a) Find )1.0(y using Modified Euler’s method given that 12+=xydxdy and 1)0(= y b) Obtain a relation of the formxaby= for the following data by the method of least squares

x 2 3 4 5 6 y 8.3 15.4 33.1 65.2 127.4 R18 Page 2 of 2 5

a) Show that ()()dxxxnmnmn∫∞+−+=

011,β b) Show that 2.

2221sin20ππθ

+Γ+Γ=∫=nn

dxxn 6 a) Prove that 24 1 11041

042π=+×−∫∫xdxxdxx b) Prove that Γ(n)=∫−1

01)/1log( dx xn where n>0 7 a) Evaluate ∫∫−40sin

02 2πθθar ardrd b) Find the volume of the sphere 2 2 2 2a z y x =++ 8 Verify divergence theorem for kxzjyxizx F ˆ ˆ ˆ) 2(2 2−+−= taken over the region

bounded by 1,0 ,1 ,0 ,1,0 ====== z z y y x x ********** Page 1 of 1 Code No: R18A0502 MALLA REDDY COLLEGE OF ENGINEERING & TECHNOLOGY

(Autonomous Institution – UGC, Govt. of India) I B.Tech II Semester Regular/Supplementary Examinations, Oct/Nov 2020 Object Oriented Programming (Common to all branches) Roll No

Time: 2 hours Max. Marks: 70 Answer Any F our Questions All Questions carries equal marks .

**** 1 a) What do you mean by object oriented programming? Explain how it is different from procedural concepts .

b) List out and elaborate various data types and tokens in C++?

2 a) What are the features of OOP ? Explain.

b) List and discuss variables, constants and operators in C++?

3 a) Illustrate the purpose of static members in C++ with an example ?

b) Demonstrate objects as f unction a rguments in C++ with suitable example?

4 a) Discuss about m emory allocation for objects in C++ and list its significance ?

b) Define a class? How do y ou access members on that and list the merits and scope of classes in C++.

5 Explain the scope of d efault constructor, parameterized constructor and c opy constructor in C++ with an example .

6 What do you mean by inheritance ? Explain about hierarchical inheritance and hybrid inheritance in object oriented design process .

7 Describe about memory management process in C++ with example? List its scope in real time environment.

8 Define e xception handling ? Explain t hrowing and catching mechanism s in C ++ and list out the scope of exception handling in real time application development.

********** R18