#### R18 I Year II Sem Supplementary, February 2021

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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 Supplementary Examinations, February 2021

Basic Electrical Engineering (EEE, ECE, CSE & IT) Roll No Time: 2 hours 30 min Max. Marks: 70 Answer Any Five Questions

All Questions carries equal marks.

*** 1(a) Illustrate KVL & KCL with an example. [7M] (b) Three resistances 100 Ω, 200 Ω and 300 Ω are connected in series to a 250 volt supply. Determine the total resistance, current in the circuit and the power dissipated in each resistor.

[7M] 2(a) Summarize the active and passive elements with an example. [7M] (b) Find the total equivalent capacitance and total energy stored if the applied voltage is 100V for the circuit shown in the fig.

[7M] 3(a) Find the current through 3Ω resistor using superposition theorem in the circuit [7M] (b) Discuss the s teps to determine the Norton’s equivalent circuit. [7M] R18 Page 2 of 2

4(a) Illustrate the source transformation technique with an example. [7M] (b) Using star - delta transformation, determine the current drawn by the source in the circuit shown in the fig.

[7M] 5(a) Illustrate the crest factor and form factor of a sine -wave. [7M] (b) An AC circuit consists of a pure resistance of 10Ω and is connected across an AC supply of 230V, 50Hz. Calculate (i) Current (ii) Power consumed (iii) Power factor (iv) write down the equations for voltage and current. [7M]

6 Find the averag e value and rms value of the sinusoidal waveform. [14M] 7(a) Describe the Faraday’s law of electro -magnetic induction principle. [7M] (b) Discuss the elementary concept of a generator. [7M] 8(a) Illustrate the operation of Earth Leakage Circuit Breaker (ELCB) [7M] (b) Discuss the importance of earthing. [7M]

********** Page 1 of 1 Code No: R18A0013 MALLA REDDY COLLEGE OF ENGINEERING & TECHNOLOGY (Autonomous Institution – UGC, Govt. of India)

I B.Tech II Semester Supplementary Examinations, February 2021 Engineering Chemistry (EEE, ECE, CSE & IT) Roll No Time: 2 hours 30 min Max. Marks: 70

Answer Any Five Questions All Questions carries equal marks.

*** 1 a) What is meant by EMF of a Cell? Write its applications. [3M] b) Define a secondary cell. Explain the construction and working of lithium ion battery with cell r eactions. [7M] c) Define corrosion. What are the causes and effects of corrosion? [4M]

2 a) What are fuel cells? Explain the construction and working of H 2-O2 cell. [7M] b) What is cathodic protection? Explain impressed current cathode method . [7M] 3 a) Show thr ough a diagram, explain the splitting of d -orbitals tetradral complexes. [7M] b) Explain about Linear Combination of Atomic Orbitals. [7M]

4 a) State salient features of CFT . [4M] b) What are the postulates of molecular orbital theory? Explain molecular energ y level diagrams for N 2 molecule with the neat diagram? [10M] 5 a) How can you estimate hardness of water by EDTA method? Explain the EDTA titration with its advantages. [10M]

b) Explain briefly about disinfection of water by ozonisation. [4M] 6 a) What is port able water? Explain the specifications of portable water. [4M] b) Explain the desalination of hard water by reverse osmosis water with neat diagram. [6M] c) What are ion exchange resins? How is the exhausted resin regenerated in

ion exchange method of water softening? [4M] 7 a) What is Anti -Markovnikov’s addition? Explain briefly with suitable example. [6M] b) What are reduction reactions? Explain briefly reduction of carbonyl compounds using NaBH 4. [6M]

c) Define electrophilic addition reaction. [2M] 8 a) Define o ctane and cetane number? Give their significance? [4M] b) Describe a method of fluid bed catalytic cracking with neat sketch and discuss the advantages of catalytic cracking. [10M] **********

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

I B.Tech II Semester Supplementary Examinations, February 2021 Engineering Graphics (ME & AE) Roll No Time: 2 hours 30 min Max. Marks: 70

Answer Any Five Questions All Questions carries equal marks.

**** 1 Draw a hyperbola when the distance of its focus from its directrix is 50mm and eccentricity is 3/2. Also draw a normal and tangent to the hyperbola at a point 25mm fro m the directrix [14M] 2 Draw an epicycloid of a circle of diameter 50mm, which rolls outside a circle of

diameter 180mm for one revolution. [14M] 3 A 100 mm long line PQ has its end P 10 mm above the H.P. and 70 mm in front of the V.P. The line is incli ned at 600 to the H.P. and 300 to the V.P. Draw its projections. [14M] 4

A 75 mm long line PQ is inclined at 300 to the H.P. Its end P is 20 mm above the H.P. and on the V.P. End Q is 60 mm in front of the V.P. Draw the projections of a line. [14M] 5 The diagonals of a rhombus measures 100 mm and 40mm. The longer diagonal is inclined at 300 to the H.P. with an end in H.P. and the smaller diagonal is parallel

to both the principal planes. Draw its projections. [14M] 6 A hexagonal pyramid of base edge 30 mm and axis 60 mm, has a triangular face on the ground and the axis parallel to the V.P. Draw its projections. [14M] 7 Draw an isometric projection of a pentagonal prism of base side 35mm and axis 60mm. The prism rests on its base on the H.P. with an edge of the base parallel to

the V.P. [14M] R18 Page 2 of 2 8 Draw Three view of object shown in Fig.

All dimensions are in mm [14M] *** Page 1 of 4 Code No: R18A0002

MALLA REDDY COLLEGE OF ENGINEERING & TECHNOLOGY (Autonomous Institution – UGC, Govt. of India) I B.Tech II Semester Supplementary Examinations, February 2021 Professional English (Common to all branches)

Roll No Time: 2 hou rs 30 min Max. Marks: 70 Answer Any F ive Questions All Questions carries equal marks .

***** 1 a.

b. Describe a person whom you like the most.

Describe your favorite smart phone. [7M] [7M] 2 What are the features of a good paragraph? W rite a paragraph on ‘The importance of Good Manners’’ by following the conventions of writing a paragraph. [14M] 3.a

b Explain briefly about the effective ness of good eye contac t, gestures, physical appearance and voice modulation for an effective oral presentation.

Fill in the blanks in the text below with one of the following idioms:

a. over the moon b. a drop in the ocean c. actions speak louder than words d. have a mountain to climb e. an arm and a leg

f. a blessing in disguise g. a piece of cake h. once in a blue moon i. jumping the gun j. it’s a small world

I. Overcoming this problem is an easy task. We in front of us.

II. Five hundred may seem like but if everyone contributed that much we’ d have seventy thousand.

III. Getting my bike fix ed is going to cost her as the engine has completely blown, but she has no choice. She needs it for work.

IV. The infection he had a few days ago which prevented him from going on holiday with his friends was. They had a terrible time. Everything went wrong and it cost them a lot of money.

V. The interview for that new job was. They asked me very easy questions.

VI. The new Raj Mauli Scorsese film is out at the cinema. A film that comes out that I really enjoy a nd want to see happens, so I'll definitely go and see it.

VII. Shabana was when she gave up his job to start university. Now she has found out she can't get a grant.

VIII. Mohan is finally getting a chance to go on her trip of a lifetime , a holiday to [4M] [10M] R18 Page 2 of 4 Italy! H e was when I spoke to him .

IX. The government keeps talking about reducing poverty. However, what do they ever do a bout it? Nothing! .

X. Hari was in a café in America and amazingly, he saw Sandhya from down the road in there .

4.a 4.b Change the following passive sentences into active sentences.

a. This novel was written by Tara.

b. The project will be discussed tomorrow.

c. The engineer has announced his plan to build a bridge over the river.

d. She was present a gift.

e. He gave me a pen.

f. The results have not been announced yet.

g. She was told to get out.

Change the following active sentences into passive sentences.

h. The girl killed the cat.

i. He loves he r.

j. I brought a bike yesterday.

k. I gave an apple.

l. They have invited all of my teacher s.

m. He is reading a book.

n. Sandhya will give you a speech . [7M] [7M] 5 Explain the importance of the following aspects with regard to a good interview:

a. Eye contact b. Smile c. Physical appearance d. Gestures e. Postures

f. Spoke n English g. Self-introduction [14M] 6.a b What is a cover letter and what is its purpose ? Explain some Dos and Don’ts in writing a cover latter .

Change the following sentences from direct to indirect speech.

a. David said to me , “I am having my lunch.” b. Radha said to Malathi , “I am very busy now.” c. He said to Krishna , “I am unwell.” d. She said to her teacher , “I finished my homework two days ago.” e. Chaitanya said to his mom , “I want to go to a park.”

f. She said to her classmate , “I am attending a seminar tonight.” g. Mustafa said to Emily , “My sister writes well .” [7M] [7M] 7 Prepare an effective resume for the following notification .

[14M] Page 3 of 4 8.a b Rewrite the following sentences correctly.

a. The capital of the United Kingdom is the London.

b. Where you are going?

c. I must to call her immediately.

d. According to me, tha t is a good decision.

e. I don’t know where is my friend?

f. Murali has got a project a week ago .

g. kalam explained her the problem twice.

In each of the following questions, there is a certain relationship between two words given on one side; and one w ord is given on the other side followed by a blank. Fill in the blank choosing one the given alternatives having the same relationship with this word as the words of the given pair have.

I. Eye : Myopia :: Teeth :

a. Trachoma b. Eczema c. Pyorrhoea d. Cataract II. Antiseptic : Germs :: Antidote :

a. Wound b. Infection c. Allergy d. Poison III. Election : Manifesto :: Meeting :

a. Preface b. Cart c. Circular d. Agenda IV. Squint : Eye :: Squeeze :

a. Throat b. Hand c. Tongue d. Cloth V. Coal : Heat :: Wax :

a. Light b. Bee c. Energy d. Candle VI. Traveller : Journey :: Sailo r : [7M]

[7M] RECRUITMENT Date of notification ( your choice) Name of the newspaper ( your choice) Name of the company ( your choice) For the position of ( your choice)

With/without experience.

Qualification: B.Tech w ith excellent academic record (Imagine that you have the Page 4 of 4 a. Voyage b. Ship c. Crew

d. Water VII. Carpenter : Saw :: Tailor :

a. Cloth b. Needle c. Measurement d. Sewing **********

Page 1 of 1 Code No: R18A0015 MALLA REDDY COLLEGE OF ENGINEERING & TECHNOLOGY (Autonomous Institution – UGC, Govt. of India) I B I B.Tech II Semester Supplementary Examinations, February 2021

Engineering Physics (ME & AE) Roll No Time: 2 hours 30 min Max. Marks: 70 Answer Any Five Questions

All Questions carries equal marks.

*** 1 a) Derive an equation for motion of forced damped harmonic oscillator.

b) What are the characteristics of simple harmonic oscillator [8M+6 M] 2 a) What is Quality facto r? Explain in detail b) Explain the Phasor model of SHM . [7M+7M] 3 a) Derive an equation of interference in thin films due to reflection .

b) What are the conditions for superposition of waves to produce interference c) Distinguish between division of wave front and division of amplitude. [6M+4M+4M] 4 a) With neat diagram explain construction and working principle of Michelson

interferometer.

b) Calculate the aperture of the objective of a telescope which may be used to resolve two stars separated by 4.88 x 10-6 radians for light of wavelength 6000 A0. [10M+4M ] 5 a) Describe classification of materials based on band theory of solids b) Draw and explain E -K diagram. [10M+4M ] 6 a) What are the postulates of free electron theory? List out the draw backs of free electron

theory.

b) Explain Bloch theorem . [9M+5M ] 7 a) Distingu ish between dia, para and ferro magnetic materials.

b) If NaCl crystal is subjected to an electric field of 500 V/m and the resulting polarization is 2.3 x 10-8 C/m2, calculate the relative permittivity of NaCl.

[10M+4M ] 8 a) Explain working Principle of Ruby laser.

b) What are the applications of lasers? [8M+6M] ********** R18 Page 1 of 2 Code No: R18A0022

MALLA REDDY COLLEGE OF ENGINEERING & TECHNOLOGY (Autonomous Institution – UGC, Govt. of India) I B.Tech II Semester Supplementary Examinations, February 2021 Mathematics-II (Common to all branches)

Roll No Time: 2 hours 30 min Max. Marks: 70 Answer Any Five Questions All Questions carries equal marks.

*** 1 a) The equation 7)( log 210+ = x x has a root between 3 and 4. Find this root, correct to three decimal places, by false position method b) Find a real root of the equation 09 4 )(3=−−= x x xf using bisection method correct to t wo decimal places [7M]

[7M] 2 a) Using Newton - Raphson method, Find the square root of 24 b) The table below gives the values of xtan for 30.0 10.0≤≤x x 0.10 0.15 0.20 0.25 0.30 x ytan= 0.1003 0.1511 0.2027 0.2553 0.3093

Find tan 0.12 [7M] [7M] 3 a) Derive normal equations of a straight line b) Using Taylor’s series method, find y for 1.0=x given that 1)0(,2=−= yy xdxdy [7M]

[7M] 4 Evaluate∫π0sin dxx by dividing the range into 10 equal parts using i. Trapezoidal rule

ii. Simpson’s 31 rule [14M] 5 a) Show that ()()dxxx xnmnmn m

∫ +− −++=101 11,β b) Show that 

ΓΓ=∫434121cot2

0θθπd [7M] [7M] 6 a) Show that ()()()()nmn mnm+ΓΓΓ=,β

b) Evaluate ∫−1041xdx [8M] [6M] 7 a) Evaluate ∫∫θddrr3over the area included between the circles θsin2=r and θsin4=r [7M]

R18 Page 2 of 2 b) Find the volume of the ellipsoid 1222222

=++czbyax [7M] 8 a) Show that ( )()( )kz xz xy jxy xz ix yz z y F ˆ2 2 3ˆ 2 3ˆ2 32 2+−+++−+−= is both solenoidal and irrotational

b) Find the total work done in moving a particle in a force field given by kx jzixy F ˆ 10ˆ5ˆ3 +−= along the c urve 3 2 2,2 ,1 tzt y tx ==+= from 1=t to 2=t [7M] [7M] ****

Page 1 of 1 Code No: R18A0502 MALLA REDDY COLLEGE OF ENGINEERING & TECHNOLOGY (Autonomous Institution – UGC, Govt. of India) I B.Tech II Semester Supplementary Examinations, February 2021

Object Oriented Programming (Common to all branches) Roll No Time : 2 hours 30 min Max. Marks: 70 Answer Any Five Questions

All Questions carries equal marks.

*** 1 a) Describe the object oriented paradigm in C++ ?

b) Define d ata encapsulation? How will you achieve data hiding using e ncapsulation? [7M] [7M] 2 a) Demonstrate the b enefits of OOP ?

b) List and discuss various c ontrol structures and l oops in C++? [6M] [8M] 3 a) Distinguish static -binding and Late -binding in C++?

b) Demonstrate friend functions in C++ with suitable example? [7M] [7M] 4 a) What is inl ine function? How will you differentiate function and inline function?

b) What is abstract class? How is it useful in developing applications in C++? D iscuss with an e xampl e. [5M] [9M] 5 What is constructor and destructor? Explain clearly m ultiple constru ctors in a class with suitable example. [14M]

6 Define inheritance ? Explain about s ingle inheritance and multiple inheritance in object oriented design process . [14M] 7 What do you mean by overloading in C++? Explain f unction overloading and operator overloading with a suitable example. [14M] 8 Define a class template ? Explain class templates with multiple parameters in C++. [14M]

********** R18