20151222113211.pdf

GE 6251 BASIC CIVIL & MECHANICAL ENGG

Question Paper Code: 1662141B.E./B.Tech. DEGREE EXAMINATIONS, NOV./DEC. 2011

Regulations 2008Second Semester

Common to EEE, E & I, I & C, ECE, CSE, IT and Bio MedicalEngineering branches

GE2152 Basic Civil and Mechanical EngineeringTime: Three Hours Maximum: 100 marks

Answer ALL QuestionsPart A - (10 x 2 = 20 marks)1. Write the arithmetic equation used in rise and fall method of levelling.2. Define 'mortar' which is is used in construction works.3. What is a foundation (for building)?4. What is meant by plastering?5. Write any two purposes of a dam.6. State two merits and two demerits of a Nuclear power plant.7. What is the use of draft tube in hydraulic turbines?8. What is a heat engine?9. Mention any four boiler mountings.10. What is refrigeration? Name any two common refrigerants used in refrigerators.Part B - (5 x 16 = 80 marks)

11. (a) (i) List out the differences between height of collimation method and rise andfall method of leveling. (6)

(ii) A survey was conducted on a plot which is having a triangular shape inwhich the length of side AB is 200 m and the bearings of sides AC, ABand BC are 65°, 160°, and 20° respectively. Find out the area of the plot.

(10)OR

11. (b) (i) Explain the steps involved in the manufacture of bricks. (8)(ii)Sketch any four steel sections that are commonly used in civil engineering.

12. (a) (i)State the various functions of a foundation for a building. (4)(ii)Explain briefly the following types of shallow foundations with appropriatesketches:(1) Isolated column footings (4)(2) Combined column footings (4)(3) Grillage foundation (4)

OR12. (b) (i) A steel rod of 20 mm diameter of 1 m long is subjected to an axial pull

of 50 kN. Determine the stress, strain and elongation of the rod. TakeYoung's modulus as E = 2 X 105 N/mm2. (7)(ii) Sketch the following types of Dams:(1) Rock-fill Dam(2) Gravity Dam

SCE 154 Department of Mechanical Engineering


(3) Arch Dam Add one or two sentences of explanation. (9)13. (a) (i) With reference to gas turbine power plant, explain, with suitable sketches,the working of the following:

(1) Open cycle gas turbine plant (6)(1) Closed cycle gas turbine plant (6)(ii) List the merits of a gas turbine power plant. (4)

OR13. (b) (i) With a neat schematic diagram, explain the working principle of a doubleacting reciprocating pump. State why it is called double acting pump.(10)

(ii) What is cavitation in pumps? Explain. (6)14. (a) What are the four strokes of a four-stroke petrol engine? Explain each of them

with separate sketches. (16)OR

14. (b) (i) State the various differences between fire tube boiler and water tube boiler.(8)(ii) Draw a neat sketch of a simple fire tube boiler and explain its working indetail. (8)

15. (a) With the help of a neat schematic diagram, explain the working principle ofa vapor absorption refrigeration system. (16)

OR15. (b) (i) Draw the layout of a split air-conditioning unit and explain its working;

also state how are the arrangement of its components is different fromthat of a window air-conditioner. (13)(ii) What are the advantages of split air-conditioner compared to a windowair-conditioner?



B.E./B.Tech. DEGREE EXAMINATION, JUNE 2010Second Semester

Electrical and Electronics EngineeringGE2152 - BASIC CIVIL AND MECHANICAL ENGINEERING

(Regulation 2008)(Common to Bio-medical Engineering, Electronics and Communication Engineering,

Electronics and Instrumentation Engineering, Information Technology, ComputerScience and Engineering, Instrumentation and Control Engineering)

Time: Three hours Maximum: 100 MarksAnswer ALL Questions

PART A- (10 x 2 =20 Marks)1. State the two principles of surveying.2. How are bricks classified?3. Define bearing capacity of soil.4. Define stress and strain.5. What is the use of surge tank in hydropower plants?6. Give two examples for positive displacement pumps.7. What is the function of a carburetor?8. Compare two stroke and four stroke engines with regard to power output andthermal efficiency, for the same speed and cylinder capacity.9. Define Ton of Refrigeration.10. State the values ofDBT and RH for human comfort in India.

PART B - (5 x 16 =80 Marks)11. (a) The following perpendicular offsets were taken at 10 m intervals from a

survey line to an irregular boundary line: 3.15 m, 4.30 m, 8.20 m,6.85 m, 7.60 m, 4.20 m, 5.60 m, and 4.30 ill. Calculate the area enclosedbetween the survey line, irregular boundary line, first and last offsets bytrapezoidal rule.

Or(b) What are the different types of cement? Explain their properties anduses.

Or12. (a) Describe with neat sketches:

(i) Anyone type of shallow foundation(ii) Pile foundation.

(b) Describe with neat sketches(i) Arch culvert(ii) T-Beam and Slab Bridge.

13. (a) Draw a neat Layout of a typical Steam Power Plant and explain thevarious circuits involved.

Or(b) With the help of suitable sketches, explain the working of a Reciprocating

Pump. What are the advantages of centrifugal pumps over reciprocatingpumps?

14. (a) Explain the working of a two stroke Petrol engine. What are the meritsand demerits of two stroke engines?



Or(b) Explain the- principle of working of a four stroke Diesel engine with

suitable sketches. What are the merits and demerits of four strokeengines?

15. (a) With the help of flow diagram explain the principle of working of avapour compression refrigeration system. Compare vapour absorptionrefrigeration with vapour compression refrigeration.

Or(b) With a neat sketch, explain in detail the working of a window type room

air conditioner.



Question Paper Code: U4008B.E./B.Tech. DEGREE EXAMINATION, NOVEMBERIDECEMBER 2009

Second SemesterElectronics and Communication Engineering

GE 2152 - BASIC CIVIL AND MECHANICAL ENGINEERING(Common to Biomedical Engineering, Electrical and Electronics Engineering,

Electronics and Instrumentation Engineering, Information Technology, ComputerScience and Engineering and Instrumentation and Control Engineering)

(Regulation 2008)Time: Three hours Maximum: 100 Marks

Answer ALL QuestionsPART A- (10 x 2 = 20 Marks)

1. What is the principle of surveying?2. Differentiate WCBfrom RB.3. Define safe bearing capacity of soil.4. What is Poisson's ratio?5. List the types of dams.6. Give the classification of power plants.7. What is the principle of centrifugal pump?8. What is meant by two stroke cycle engine?9. Define the term refrigeration.10. Mention the applications of refrigeration.

PART B - (5 x 16 =80 Marks)11. (a) (i) Draw a neat sketch of a dumpy level and indicates its parts. (8)

(ii) Explain how reciprocal levelling is carried out in case ofobstruction. (8)

Or(b) (i) What are the requirements of a good building stone? (5)(ii) What is the chemical composition of cement? (5)(iii) List the types of cement and the various tests carried out onordinary Portland cement. (6)

12. (a) Enumerate different types of foundations you would recommend underdifferent situations and soil conditions. Explain them briefly. (16)

Or(b) Draw a typical vertical section of a wall through openings, and showvarious important elements of construction. (16)

13. (a) Explain the working of a single acting single stage reciprocating pumpwith a neat sketch. Name the main parts. (16)



Or(b) Explain the construction and working of a centrifugal pump with a neatsketch. (16)

14. (a) Describe the working of four stroke cycle petrol engine with neatsketches. (16)

Or(b) Compare two-stroke engine with four-stroke engine. (16)

15. (a) Explain with a line diagram the construction and working of a vapourcompression system of refrigeration. (16)

Or(b) How are vapour refrigerators classified? Explain their operation. Mention

the names of vapours used in vapour refrigerators. (16)


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