ivth year1

1

Assignment Booklet

BTME Programme

Fourth SemesterBME 023 Advanced Manufacturing Technology

BME 024 Mechanical Engineering Design

BME 025 Condition Monitoring and Maintenance Engineering

BME 027 Heat and Mass Transfer

BME 028 Fluid Mechanics

BME 029 Robotics

BME 030 Safety Engineering (Elective Course0

BME 031 Energy Conversion

BME 035 Industrial Engineering and Operations Research

SCHOOL OF ENGINEERING & TECHNOLOGYINDIRA GANDHI NATIONAL OPEN UNIVERSITY

Maidan Garhi, New Delhi – 110 068

JULY 2011

Q.1 What do you understand about near net shape manufacturing? Briefly describe the methods of near net shape manufacturing.

(10)

Q.2 (a) What is MEMS? What are its applications? Explain the varioius micro-machining processes and thier applications.

(b) What do you understand about nano-technology? Describe the different types ofnano-manufacturing methods.

(5 + 5 = 10)Q.3 (a) What is hybrid manufacturing system? Describe the manufacturing of optical fibre with

hybrid manufacturing system.(b) Define concurrent engineering. Explain with a neat diagram the foundation model of

concurrent engineering.(5 + 5 = 10)

Q.4 (a) Explain the various phases of product development process.(b) What are the common road blocks in the implementation of DFMA process? Explain.

(5 + 5 = 10)Q.5 (a) Describe in detail about KANO’s model.

(b) What are the building blocks of QFD? Describe the various phases of QFD.(5 + 5 = 10)

Q.6 (a) Define Rapid Prototyping. What are the main applications of Rapid Prototyping? (b) Describe the process of Laminated Object Manufacturing (LOM) and its applications.

(5 + 5 = 10)Q.7 (a) What is meant by the term Rapid Tooling? Briefly describe the steps involved in the

rapid steel 1.0 process.(b) Describe the direct shell production casting? Enumerate the advantages and

disadvantages of direct shell production casting.(5 + 5 = 10)

Q.8 (a) How does reverse engineering differ from other types of engineering? Describe the different stages involved in the reverse engineering process?

(b) Describe in brief, with the help of block diagram the conversion of 3D scanner data to CAD model.

(5 + 5 = 10)2

TUTOR MARKED ASSIGNMENTBME-023

ADVANCED MANUFACTURING TECHNOLOGY

Note : All questions are compulsory and carry equal marks. This assignment is based on all Blocks of Advanced Manufacturing Technology.

Maximum Marks : 100Weightage : 30%

Course Code : BME-023Last Date of Submission : Nov. 30, 2011

BTME

Q.9 (a) List down the crucial issues related to web manufacturing and briefly discuss them.

(b) Briefly highlight the three types of LAN topologies. Explain the working mechanism of WAN type of network data transmission.

(5 + 5 = 10)

Q.10 Describe the following in detail :

(i) e-manufacturing definitions

(ii) e-manufacturing strategy

(iii) e-manufacturing logistics and supply chain

(iv) e-manufacturing architecture

(v) e-manufacturing benefits.

(2 5 = 10)

3

Q.1 Determine the main dimensions of the longitudinal and circumferential joints of a boiler whose inner diameter is 1.7 m and the pressure of steam is 20 bar (2.1 N/mm2). The tensile strength of the plate material is 400 N/mm2.

Q.2 A bracket 6 mm thick is welded to a structure by 6 mm weld. Other dimensions of the configuration are shown in Figure 1. Calcualte the factor of safety for static load F applied as shown in the Figure 1.

Figure 1

Q.3 A concentric spring for an aircraft engine valve is not exert a maximum force of 500 N under an axial deflection of 20 mm. Design the spring.

Q.4 A differential band brake is to be designed for which lifting a load of 50 kN through a rope wound round a barrel of 450 mm diameter. Give a complete design of brake.

Q.5 Select a suitable bearing which is to operate at 1500 rpm, and is acted upon by a 8000 N radial load and 5000 N thrust load. The inner ring rotates, the load is steady and the service is continuous. The shaft diameter, from strength consideration, is 45 mm and the life expectancy is 500 hours.

4


MECHANICAL ENGINEERING DESIGN

Note : All questions are compulsory and carry equal marks. This assignment is based on all Blocks of Mechanical Engineering Design.



BTME

G

25

30

F F1

FH

60

20 F = 5 kN

Q.1 Describe the different functions of plant engineering or maintenance department.

(10)

Q.2 Describe the importance of coordination and directing function with reference to the plant engineering and management.

(10)

Q.3 Jobs A, B, C, D and E must go through Processes I and II in that sequence (i.e. Process I first, then Process II). Use Jonson’s rule to determine the optimal sequence to schedule the jobs to minimize the total required time.

Job Required Processing Time on ‘A’

Required Processing Time on ‘B’

A 4 5

B 16 14

C 8 7

D 12 11

E 3 9

(10)

Q.4 What is A-B-C analysis? Explain the step-by-step method to conduct the A-B-C analysis.

(10)

Q.5 There are seven jobs that must be processed in two operations : A and B. All seven jobs must go through A and B in that sequence – A first, then B. Determine the optimal order in which the jobs should be sequenced through the process using these times;

Job Process A Time Process B Time

1 9 6

2 8 5

3 7 7

4 6 3

5 1 2

6 2 6

7 4 7

(10)

5


CONDITION MONITORING AND MAINTENANCE ENGINEERING

Note : All questions are compulsory and carry equal marks. This assignment is based on all Blocks of Condition Monitoring and Maintenance Engineering.

.



BTME

Q.6 Describe the functions of four pillors of condition monitoring.

(10)

Q.7 The cost of an equipment is Rs. 7200/- and the scrap value is Rs. 200/-. The maintenance costs are as follows :

Year 1 2 3 4 5 6 7 8

Maintenance Cost Rs. 150 300 450 650 950 1300 1850 2500

When should the equipment be replaced?

(10)

Q.8 A company wishes to purchase a machine for its maintenance shop. The initial costs and annual operating costs are below for two options of machines. Which unit is economically justified?

YearCost of Machine Operating Cost

(Rs.)

Machine-I Machine-II

1 50,000 80,000

2 5,000 5,000

3 10,000 5,000

4 15,000 5,000

5 20,000 10,000(10)

Q.9 What will be the system reliability of the following system if the reliability of each unit is ‘r’?

If reliability of each unit is 0.4. Calculate the system reliability.

(10)

Q.10 Write short notes on :

(i) Standard Work Kaizen

(ii) TPM Focus Kaizen

(iii) Quality Focus Kaizen

(iv) Kanban Kaizen

(v) SS Kaizen

(5 2 = 10)

6

A

B

C

D

E

F

G

H

Q.1 (a) The composite wall of an oven consist of three material, two of them are of known thermal conductivity, kA = 20 W/m.K and kc = 50 W/m.K and known thickness. LA = 0.3 m and Lc = 0.15 m. The third material B, which is sandwiched between material A and C is of known thickness, LB = 0.15 m, but of unknown thermal conductivity kB.Under steady state operating conditions, the measurement reveals an outer surface temperature of material C is 20oC and inner surface of A is 600oC and oven air temperature is 800oC. The inside convection coefficient is 25 W/m2.K. What is the value of kB.

(b) An industrial freezer is designed to operate with an internal air temperature of – 20oC, when the external air temperature is 25oC. The internal and external heat transfer coefficients are 12 W/m2.K and 8 W/m2.K. respectively. The wall of the freezer consists an inner layer of plastic (k = 1 W/m.K.), 3 mm thick and an outer layer of stainless steel(k = 16 W/m.K), 1 mm thick. A layer of insulation material (k = 0.07 W/m.K) is sandwiched between these two layers. Find the thickness of insulation to reduce the convective heat loss to 15 W/m2.

Q.2 (a) The inside and outside surfaces of a hollow sphere of radii r1 and r2 are maintained at constant temperature T1 and T2 respectively. The thermal conductivity of insulation material varies with temperature as , where ko is constant. Derive an expression for heat flow through the sphare.

(b) A plane wall is a composite of three materials A, B and C. The wall of material A has a heat generation at the rate of 2 106 W/m3. The thermal conductivity of wall A is190 W/m.K, while its thickness is 50 mm.The wall material of B and C do not have heat generation with

The inner surface of material A is well insulated, while outer surface of material C is cooled by water stream at with convection coefficient h = 2000 W/m2.K.

(i) Sketch the temperature distribution in the composite under steady state conditions.(ii) Determine the temperature of insulated surface and cooled surface.

Q.3 (a) The hydrogen gas diffuses through a steel wall of 2 mm thickness. The molar concentration of hydrogen at the interface is 1.5 kg.mol/m3 and it is zero on theouter face. Calculate the diffusion rate of hydrogen, if its diffusivity coefficient is0.3 10– 12 m2/s.

(b) Estimate the diffusion rate of water from the bottom of the test tube 1.5 cm in diameter and 15 cm long into dry atmospheric air at 25C. Take diffusion coefficient of25.6 10– 6 m2/s.

7


HEAT AND MASS TRANSFER

Note : All questions are compulsory and carry equal marks.


Course Code: BME- 027 Last Date of Submission: November 30, 2011

BTME

Q.4 (a) The engine oil at 25oC is forced over a 30 cm x 20 cm plate at a velocity of 1.5 m/s. The flow is parallel to 30 cm side, which is heated to a uniform temperature of 55 oC. Calculate the rate of heat transfer from the plate to the oil. Take the following physical properties of oil at 40oC.

= 876 kg/m3, v = 24 10– 5 m2/s; kf = 0.144 W/m. K.

Use co-relation

(b) A mixture of O2 and CO2 is kept in a container at 21C and at 151.9 kPa. The mean velocity of O2 is 0.08 m/s and that of CO2 is – 0.02 m/s. If the molar fraction of O2 is 0.4, calculate :

(i) The molar fraction of CO2

(ii) The molecular weight of mixture

(iii) Molar concentration of CO2 and O2

(iv) Mass concentration of CO2 and O2

(v) Mass fraction of CO2 and O2

(vi) Mass diffusion velocities of both components

(vii) Molar diffusion velocities of both component(viii) Molar fluxes of CO2 and O2

(ix) Mass fluxes of CO2 and O2

Q.5 (a) Air at 35C and 1 atm flows at a velocity of 60 m/s over

(i) a flat plate 0.5 m long,a nd(ii) a sphere 5 cm in diameter.

Calculate the mass transfer coefficient of water vapour in air. Neglect the concentration of vapour in air.

(b) Air at 50C and 1 atm flow over the surface of a water reservoir at an average velocity of 2.3 m/s. The water surface is 0.65 m long and 0.65 m wide. The water surface temperature is estimated at 30C. The relative humidity of air is 40%. The density of air is 1.105 kg/m3 and its viscosity is 1.943 10– 5 kg/ms. Calculate the amount of water vapour evaporates per hour per sq-m of water surface and state the direction of diffusion.

Q.6 (a) A tray 40 cm long and 20 cm wide is full of water. Air at 30C flows over the tray along the length at 2 m/s. The moving air at 1.013 bar and partial pressure of water in the air is 0.007 bar. Calculate the rate of evaporation, if the temperature of the water is 25C.Take for at = 1.2 kg/m3, = 15 10– 6 m2/s, DAB = 0.145 m2/h

(b) Explain Fick’s law of diffusion. What is mass diffusivity? What is its dimension?Q.7 (a) (i) The water in a 5 m 15 m outdoor swimming pool is maintained at a temperature

of 27C. The average ambient temperature and relative humidity are 27C and 40%, respectively. Assuming a wind speed of 2 m/s in the direction of long side of the pool, estimate the mass transfer coefficient for the evaporation of water from the pool surface.

(ii) If the air stream is at 50C, while the wet bulb temperature is at 22C. Calculate the relative humidity of air stream

(b) Calculate the shape factor of a conical hole.

8

Q.8. (a) An exterior wall of a house may be approximated by a 0.1 m layer of common brick(k = 0.7 W/mC) followed by a 0.04 m layer of gypsum plaster (k = 0.48 W/mC). What thickness of loosely packed rock wool insulation (k = 0.065 W/mC) should be added to reduce the heat loss or (gain) through the wall by 80 percent?

(b) A mild steel tank of wall thickness 12 mm contains water at 95C. The thermal conductivity of mild steel is 50 W/mC, and the heat transfer coefficients for the inside and outside the tank are 2850 and 10 W/mC, respectively. If the atmospheric temperature is 15C, calculate :

(i) The rate of heat loss per m2 of the tank surface area; and

(ii) The temperature of the outside surface of the tank.

Q.9 (a) A thick walled tube of stainless steel with 20 mm inner diameter and 40 mm outer diameter is covered with a 30 mm layer of asbestos insulation (k = 0.2 W/mC). If the inside wall temperature of the pipe is maintained at 600C and the outside insulation at 1000C, calculate the heat loss per metre of length.

(b) A spherical shaped vessel of 1.4 m diameter is 90 mm thick. Find the rate of heat leakage, if the temperature difference between the inner and outer surfaces is 220C. Thermal conductivity of the sphare is 0.083 W/mC.

Q.10 (a) In a counter flow double pipe heat exchanger, water is heated from 25C to 65C by an oil with a specific heat of 1.45 kJ/kg K and mass flow rate of 0.9 kg/s. The oil is cooled from 230C to 160C. If the overall heat transfer coefficient is 420 W/m2C; calculate the following :

(i) the rate of heat transfer,

(ii) the mass flow rate of water, and

(iii)the surface area of the heat exchanger.

(b) The effective temperature of a body having an area of 0.12 m2 is 527C. Calculate the following :

(i) the total rate of energy emission,

(ii) the intensity of normal radiation, and

(iii) the wavelength of maximum monochromatic emissive power.

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Q.1 (a) An empty balloon and its equipment weights 441.45 N. When inflated with gas weighing 5.415 N/m3, the balloon is spherical and 7 m in diameter. What is the maximum weight of cargo that the balloon can lift, assuming air to weigh 12.066 N/m3.

(b) A ship is 80 m long and 12 m board and has a displacement of 14715 kN. When a weight of 490.5 kN is moved 5 m across the deck it inclines the ship 6o. The moment of inertia of the section of the ship at water plane about its fore-and-aft axis is 60 per cent of the moment of inertia of the circumscribing rectangle. The centre of buoyancy is 2.5 m below the water line. Find the position of the metacentre and the centre if gravity. Specific weight of sea water is 10 055 N/m3.

Q.2 (a) Determine which of the following velocity fields represents possible example of irrotational flow :

(i)

(ii)

(iii)

(b) Calculate the velocity components u and v for the following velocity potential functions .

(i)

(ii)

(iii)

Q.3 (a) A vertical venturi meter of (d/D) ratio equal to 0.6 is fitted in a 0.1 m diameter Pipe.The throat is 0.2 m above the inlet. The meter has a coefficient of discharge of 0.92. Determine (i) pressure difference as recorded by two gages fitted at the inlet and throat, (ii) difference on a vertical differential mercury manometer (specific gravity ofmercury = 13.6) when a liquid of specific gravity 0.8 flows through the meter at the rate of 50 liters per second.

(b) A 0.25 m diameter pipe carries oil of specific gravity 0.8 at the rate of 120 litres per second and the pressure at a point A is 19.62 kN/m2 (gage). If the point A is 3.5 m above the datum line, calculate the total energy at point A in metres of oil.

10


FLUID MECHANICS



Course Code : BME-028Last Date of Submission : May 31, 2011

BTME

Q.4 (a) A motor boat is driven at 4 m/s by means of a jet of water issuing from an opening100 mm square directly behind the boat and having discharge equal to 0.5 m3/ s. Find the driving force. The coefficient of contraction of the jet is 0.62.

(b) Oil of sp. gr. 0.8 flows through a horizontal pipe of diameter 100 mm which is provided with a nozzle 25 mm diameter. If the pressure at the base of the nozzle is784.8 kN/m2 [8 kg (f)/cm2], find the force exerted on the nozzle.

Q.5 (a) The velocity distribution in a pipe is given by :

Where R is the radius of the pipe, r is any radius at which the velocity is v and K is a constant index. Find the momentum correction factor.

(b) Water at a pressure of 294.3 kN/m2 flows through a horizontal pipe of 100 mm diameter with a velocity of 2 m/s.(i) If the diameter of the pipe gradually reduces to 50 mm what is the axial force on

the pipe assuming no loss of energy.(ii) If a bend is connected to the pipe which turns through 30o and tapers uniformly

from 100 mm to 50 mm. Find the force exerted on the bend other than those due to Gravity.

Q.6 (a) A pipeline 0.225 m in diameter and 1580 m long has a slope of 1 in 200 for the first 790 m and 1 in 100 for the next 790 m. The pressure at the upper end of the pipeline is 107.91 kPa and at the lower end is 53.955 kPa. Taking f = 0.032 determine the discharge through the pipe.

(b) The difference in the water surface levels of two reservoirs which are connected by a siphon is 8 m. The length of the siphon is 600 m and its diameter 0.3 m. Assumingf = 0.02, determine the discharge when the siphon is running full. If the summit of the pipeline is 5 m above the surface level of the upper reservoir, determine the maximum length of the inlet leg for the pipe to run full. Allow for all the losses and assume the permissible minimum pressure at the summit of the siphon to be absolute zero.

Q.7 (a) Find the power required to tow lengthwise a plate 1.2 m wide and 3 m long at a velocity of 2.4 m/s in water at 23oC, make allowance for the fact that the boundary layer will change from laminar to turbulent over the plate. for water at 23oC is 0.9 10– 6 m2/s and = 1000 kg/m3.

(b) For the following types of velocity distribution obtain the values of .

(i)

(ii)

where .

Q.8 (a) Oil of viscosity 0.1 Pa.s and specific gravity 0.90, flows through a horizontal pipe of25 mm diameter. If the pressure drop per meter length of the pipe is 12 kPa, determine (i) the rate of flow in N/min; (ii) the shear stress at the pipe wall; (iii) the Reynolds number of the flow; and (iv) the power required per 50 m length of pipe to maintain the flow.

(b) (i) What do you understand by hydrodynamically smooth and rough pipes?

(ii) How is head loss in commercial pipes determined?

11

Q.9 (a) A smooth flat plate 1 m wide and 1.5 m long is rowed lengthwise through still air with a velocity of 10 m/s. Assuming the boundary layer to be fully laminar, estimate its thickness at the trailing edge. Mass density and kinematic viscosity of the air are1.216 kg/m3 and 0.15 10– 4 m2/s respectively. Also calculate the shear stress at the point.

(b) Assuming that the velocity distribution in the boundary layer is given by ,

Calculate . If at a certain section free stream velocity V was observed

to be 10 m/s and the thickness of the boundary layer as 25 mm, then calculate the energy loss per unit length due to the formation of the boundary layer.Take = 1.226 kg/m3.

Q.10 (a) The resistance R, to the motion of a supersonic aircraft of length L, moving with a velocity V in air of density , depends on the viscosity and bulk modulus of elasticityK of air. Obtain using Buckingham’s -theorem, the following expression for theresistance R.

(b) The drop in pressure p due to an obstruction in a pipe depends on the pipe diameter D, average velocity in the pipe V, mass density and viscosity of the flowing fluid; and characteristic length of obstruction d. Determine a set of dimensionless parameters.

12

Q.1 (a) What are the criteria for deciding the robot for a particular job?(b) Explain the sub-systems of a robot.

(5 + 5 = 10)

Q.2 (a) For the vector , perform a translation by a distance 6 unit in thex-direction, 4 unit in the y-direction, and 2 unit in the z-direction.

(b) How can one avoid the use of higher order polynomials while several points are specified?

(5 + 5 = 10)

Q.3 (a) With respect to usage in robotic systems, state some advantage of hydraulic power as compared to D.C. electrical servos.

(b) What is the system when the robot of the characteristics equations are real and unequal? Which type of system behaviour is generally preferred?

(5 + 5 = 10)

Q.4 Write short notes on any five of the following :

(i) Spot Welding Robots,

(ii) SCARA-type Robot,

(iii) Robot Economics,

(iv) End Point Trajectory,

(v) Joint Space,

(vi) Control Law,

(vii) Degree of Freedom, and

(viii) Forward Kinematics.

(5 2 = 10)

Q.5 (a) What are the basic elements of a robotic system? Discuss the function of each element in manufacturing environment.

(b) State other types of special purpose robots.

(5 + 5 = 10)

13


ROBOTICS

Note : All questions are compulsory and carry equal marks. This assignment is based on all Blocks of Robotics.

.


Course Code : BME-029 Last Date of Submission : Nov. 30, 2011

BTME

Q.6 (a) Describe the salient features of a microprocessor based robot contoller? List a few popular brands of robotic controllers.

(b) Assume that [QA]F and [QB]A are given by :

and

Find [QB]F.

(5 + 5 = 10)

Q.7 (a) With the help of examples, explain the use of robots in the following :

(i) Welding, and

(ii) Spray painting.

(b) Explain the features of Robot Oriented Programming.

(5 + 5 = 10)

Q.8 (a) What are the four D’ of robotics? What are the “Laws of Robotics”.

(b) Discuss the anatomy of a robot.

Q.9 (a) Define degree of freedom in detail. Explain Euler angles representation.

(b) Explain the Denavit-Hartenberg representation with its importance.

Q.10 (a) What is difference between path and trajectory? What is the advantage of joint space scheme?

(b) How one can avoid the use of higher order polynomials while several points are specified?

Q.11 (a) How many individual cubics are computed when a six jointed robot moves along a cubic spline path through two via points and stops at a goal point? How many coefficients are stored to describe these cubics?

(b) A single cubic trajectory is given by

and is used over the time interval from t = 0 to t = 1. What are the starting and final positions, velocities and accelerations?

14

Q.1 (a) Explain the safety policies and constitution of safety committee in an industry.

(b) How do you identify the training needs and explain the development of training module by taking all the factors in to consideration?

Q.2 (a) What is ‘Green House’ effect? What industrial processes contribute to the green house process?

(b) What are the responsibilities of the Safety Officer and Factory Manager in case of fatal accident during the manufacturing processes?

Q.3 (a) A contractor who employs an average of 200 men working 48 hrs per week for 45 weeks has 8 disabling injuries and a total of 24 days lost from work. Calculate injury frequency rate, injury severity rate and injury index.

(b) Identify the sources of dangers in a welding shop and explain briefly the steps you would take for protection against such dangers.

Q.4 (a) What are the general principles of machine guards for reducing the risk of injuries from work, involving machineries?

(b) Describe safety in lifting machines with specific mention of cranes.

Q.5 (a) Explain how you would provide first-aid training if you were responsible for setting up a programme at your company?

(b) What are the tangible and intangible benefits of safety at construction site? Explain with suitable examples?

Q.6 (a) What are safety parameters to be followed for material handling at construction site? Explain with suitable examples.

(b) Explain the major causes for fire outbreaks in a power utility. What techniques can be used for handling and preventing such fires?

Q7. (a) What is trauma? Why should a company include trauma response in its emergency action plan (EAP)? Describe how a company might respond to the trauma resulting from a workplace emergency.

(b) Describe the importance of an effective emergency service communication systems.

Q8. (a) Discuss the use of Geographical information System in disaster preparedness.

(b) Explain the types of problems modern health and safety managers can expect to confront in attempting to implement their programmes.

15


SAFETY ENGINEERING



Course Code: BME- 030 Last Date of Submission: November 30, 2011

BTME

Q9. (a) Describe the types of accidents due to electricity and discuss the preventive measures.

(b) Define the term industrial hygiene. Briefly explain the responsibilities of the modern industrial hygienist.

Q10. (a) What is the difference between orientation and in-depth safety training to improve the environmental conditions at work place? Discuss the methods of in-depth or detailed safety training.

(b) “Safety alone is not the objective of safety Engineering. Health of worker should also be included in the objective” – Justify the statement.

16

TUTOR MARKED ASSIGNMENTBME 031

ENERGY CONVERSION

Note : All questions are compulsory and carry equal marks. This assignment is based on all Blocks of Computer Aided Process Planning.


Course Code : BME 031 Last Date of Submission: 30th November, 2011

BTME

Q.1 (a) Distinguish among naturally available kinetic, potential, chemical and thermal energies. Describe how such energy sources are used for doing mechanical work?

(b) A basic solar still having evaporation efficiency of 80% is used to produce potable drinking water on clear sunny day with intensity of solar radiation (average) of 820 W/m2. The latent heat of evaporation of water is 2.43 106 J/kg. Determine the amount of heat used for evaporation of water and the amount of distillate produced. Assume, total sunshine hours/day = 8.

(5 + 5 = 10)Q.2 (a) (i) Differentiate between natural circulation type and forced circulation type solar

water heaters. What is the function of a solar concentrator?(ii) An induction motor with 3% slip and frequency of its rotor current is 2 Hz. If motor

has 6 poles, calculate the speed of motor.(5 + 5 = 10)

Q.3 (a) What are the advantages of closed cycle gas turbine power plant and open cycle gas power plant?

(b) Propane C3H8 is used as fuel in an engine with 30% excess air. Assuming complete combustion determine the composition of exhaust gases on mass basis. Atomic weights are : C = 12, O = 16, N = 14, H = 1, molar ratio of nitrogen to oxygen is 3.76.

(5 + 5 = 10)Q.4 (a) What is the effect of friction on the flow through a steam nozzle? Explain with the help of

h. s. diagram.(b) Steam enters a single row single stage impulse turbine through a nozzle at an angle of

20o and leaves the blade in axial direction. The ratio of blade velocity is tangential (whirl) velocity of steam is 0.6. Sketch the velocity diagram and calculate :(i) the blade velocity, and(ii) work done per kg of steam.

(5 + 5 = 10)Q.5 (a) What is the difference between surface type condensers and evaporative type

condenser? With the help of sketch describe the construction and functioning of a surface type condenser.

(b) Determine the theoretical amount of air required for the complete combustion of coal with the following composition : C = 66%, H = 4%, O = 6.4%, s = 0.2%, Nitrogen = 2%, Moisture = 9% and Ash = 12.4.

(5 + 5 = 10)

17

Q.6 (a) What factors should be taken in to consideration while selecting the site of steam power plant?

(b) A hydroelectric station is to be designed for catchment area of 110 sq. km run off 80% and the average rainfall of 140 cm. The head available is 390 m. What power can be developed if the overall efficiency of plant is 70%?

(5 + 5 = 10)

Q.7 (a) In how many ways coal as fuel is analysed? Describe classes of coal.

(b) At 17oC, the heat of composition at constant pressure of amorphous carbon is 96960 cal, that of CO to CO2 is 67960 cal. Determine the heat of formation of CO at constant volume.

(5 + 5 = 10)

Q.8 (a) Distinguish between fire tube and water tube boiler. Sketch a water tube boiler andlabel it.

(b) The characteristic parameters of a Magneto-hydrodynamic power generator are : plant area = 0.30 m2, distance between plates = 0.6 m, flux density = 4 Wb/m2, average gas velocity = 103 m/s, conductivity of the gas 10 Mho/m. Determine the open circuit voltage and maximum power output.

(5 + 5 = 10)

Q.9 (a) Name the factors on which the power output from a solar thermal electric power generating system depends. What is the scope of geo-thermal energy generation in India?

(b) A hydropower station has a system comprising dam, pipelines, turbine and generator. The power generator by the plant is 5000 kW. The dam is capable of coupling 3.5 cubic meter of water per sec. at a constant heat of 200 m. The water turbine efficiency is 80.5% and generator efficiency is 93.3%. The motor weighs 9.81 kN/m3, find the head loss in pipelines.

(5 + 5 = 10)

Q.10 (a) List non-conventional methods of power generation and describe MHD.

(b) Determine the efficiency of thermo electric gene-corresponding of following parameters :

Temperature of hot source = 650 K,

Temperature of the sink = 250 K,

Figure of merit = 3.4 10– 3 K– 1

Also find Carnot efficiency.

(5 + 5 = 10)

18

Q.1 What is the fundamental difference between product and process innovation? Discuss the importance of motivation in building innovation.

Q.2 What do you understand by productivity? Describe different types of productivity with the help of suitable examples.

Q.3 What is the importance of string diagram in industrial engineering? Discuss the situations where string diagrams are being used. With help of an example, describe the string diagram.

Q.4 Discuss applications of Reverse Engineering with the help of suitable example. Describe how Reverse Engineering can be applied in product design and development.

Q.5 What is Ergonomics? How Ergonomics is applied for Product Design? List out various advantages of applying Ergonomics in Industrial Design.

Q.6 Four operators are available for work on separate jobs (ji). Cost of assigning each man to each job is given below. Assign operator to job to minimize total cost of assignment. Operators are P1, P2, P3 and P4.

ToFrom J1 J2 J3 J4

P1 20 25 22 28P2 15 18 23 17P3 19 17 21 24P4 25 23 24 24

Q.7 Solve the following Linear Programming Problem using Graphical Method and Simplex Method.

Maximize

Subject to

Q.8 For a 100 day period, the daily demand of a certain commodity shows the following frequency distribution pattern :

Daily Demand 0 1 2 3 4 5

No. of Days 10 20 40 20 6 4

Using the given data, simulate a ten day sequence of the demand values.

Q.9 Using Vogel’s Approximation method, solve the following transportation problem :

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INDUSTRIAL ENGINEERING AND OPERATIONS RESEARCH

Note : All questions are compulsory and carry equal marks. This assignment is based on all Blocks of Industrial Engineering and Operations Research.

.


Course Code : BME-035 Last Date of Submission : Nov. 30, 2011

BTME

Factory

DistributorsD1 D2 D3 D4 Availability

01 21 16 25 13 1102 17 18 14 23 1303 32 27 18 41 19

Requirement 6 10 12 15

Also solve the above Transportation Problem by North West Corner Method and obtain the optimum solutions.

Q.10 Write short notes on following :

(i) Game Theory, and

(ii) Data Envelopment Analysis.

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ivth year1

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