III-B.Tech. II Semester Examination April, 2003 PRODUCTION TECHNOLOGY – II (Mechanical Engineering) Time: 3 Hours
b)
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2.a)
Answer any Five questions All questions carry equal marks --What are the popular tool designation systems in common use? Explain them briefly. Define taper. State the methods of setup used for taper turning. Explain any two methods in detail. How threads are formed on the shaft? Explain the half nut mechanism for thread cutting.
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1.
Max. Marks: 80
What is the function of a cam in automatic lathe operations? What are the varieties and types of cams used in automats?
4.a) b)
Differentiate between Counter boring, Counter sinking and Spot facing? Explain the procedure for making contour shape work on a planer?
5.
What is jig-boring machine? Sketch and explain the constructional features and applications of jig boring machine.
6.a) b)
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3.a) b)
Define what is cutting speed, feed and depth of cut in milling. A slot 25 mm deep is to be cut through a workpiece 250 mm long with the help of H.S.S side and face cutter whose diameter is 150 mm and that has 10 teeth. The cutting speed is 50m/min and feed is 0.25 mm per tooth. Determine (i) Table feed in mm/min (ii) Total cutter travel (iii) Time required to machine the slot. Explain with simple illustrations. Reciprocating table type horizontal spindle surface grinding machine. Rotary table type horizontal spindle surface grinding machine.
8.
Explain in detail: a) Horizontal broaching machine. b) Vertical broaching machine. c) Continuous surface broaching machine.
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7. a) b)
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Set No
Code No: 320304
2
III-B.Tech. II Semester Examination April, 2003 PRODUCTION TECHNOLOGY – II (Mechanical Engineering) Time: 3 Hours
Max. Marks: 80
1.
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Answer any Five questions All questions carry equal marks --Explain with the help of sketches the different systems of specifying tool geometry.
State and explain in detail machining operations carried out on Lathe machine Tool. How are multiple threads formed on the job using lathe machine?
3.a) b)
Describe design of cams for sliding head in automatic lathe machine. List out the various cutting tool used on capstan and turret lathe machine and explain important tools in detail.
4.a)
What are the salient features of simple vertical drilling machine?
How is torque and thrust defined in drilling. What are the factors that influence torque and thrust in drilling?
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b)
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2.a) b)
5.a) b)
Explain the importance of jig boring. Explain the term locating, cutting and checking in jig boring machine.
6.a)
What do you understand by cutting direction of milling cutters and how is it determined ? What are its effects? Determine the cutting time required in face milling a workpiece 400 mm long and 250mm wide with a face mill of 100 mm diameter having 8 teeth. Depth of cut is 3.0 mm. Cutting speed is 75 m/min and feed is 0.07 mm/tooth.
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b)
Explain vertical spindle surface grinding machines. a) Double Disc type b) Swivel head type c) Orbital wheel type.
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7.
8.a) b)
Explain the quick return mechanism for a planner table. What are the general trouble shooting guides for milling operations? $$$
Set No
Code No: 320304
3
III-B.Tech. II Semester Examination April, 2003 PRODUCTION TECHNOLOGY – II (Mechanical Engineering)
b)
Answer any Five questions All questions carry equal marks --How is the chip formed in metal cutting? Explain the terms shear plane and shear zone. With the help of suitable diagram, derive the expressions for finding out the shear velocity and chip flow velocity when cutting velocity, shear angle and rake angle are given.
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1.a)
Max. Marks: 80
.in
Time: 3 Hours
What are the different tool holding devices? Explain any three in detail. What is thread chaser? How it is useful in making threads?
3.a) b)
With a neat sketch explain the working principle of a collet. How does bar feeding mechanism work?
4.a) b)
Name and sketch any four work holding devices used in shaper. Differentiate between shaping and slotting.
5.a) b)
Describe design of cams for sliding head in automatic lathe machine. List out the various cutting tools used on capstan and turret lathe machine and explain important tools in detail.
6.
A certain component can be milled with either a slab mill of 90 mm diameter, or a 150 mm diameter face mill. Each cutter has 16 teeth and the cutting speed is 20 m/min. If the feed for the slab mill is 0.15 mm per tooth and for the face mill 0.25 mm per tooth, what is the rate of feed for each cutter?
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2.a) b)
Explain in detail: a) Tool and Cutter grinders b) Any one type of special purpose grinding machine.
8.a)
Differentiate between Shaping ,Planning and Slotting as regards relative tool and work motion. State the safety guidelines for working on a lathe. Explain the follower rest and steady rest used on the lathe.
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b) c)
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Set No
Code No: 320304 III-B.Tech. II Semester Examination April, 2003
4
PRODUCTION TECHNOLOGY – II (Mechanical Engineering)
1.
Max. Marks: 80
.in
Time: 3 Hours
Answer any Five questions All questions carry equal marks --What are the common methods of chip breaking and what are the means used for the same?
What are all the important drives used in a machine tool? Explain. With a suitable diagram explain the constructional features of a feed gearbox of a typical machine tool.
3.a) b)
Can you mount a part-off tool on the turret? Why not? What is swivelling tool head? Illustrate an application of this.
4.a) b)
How is a slotter specified? With a neat sketch, explain internal cutting in a slotter.
5.a)
Explain the term cutting speed, feed, and depth of cut with reference to the drilling operation. How are the parallel shank tools held on a drilling machine? Explain the construction and working of a three jaw self centring drill chuck.
What are the advantages of helical teeth over straight teeth on cutter for slab milling. A 250 mm by 40 mm workpiece will be face milled on a 75 mm diameter cutter with 5 cemented carbide inserts. The operations will take place at a spindle speed of 100 rpm a feed of 0.2 mm/tooth and depth of cut 2.5 mm. Find the machining time and metal removal rate. Also determine the feed per tooth and metal removal rate if the desired machining time is 1 min.
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6.a) b)
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b)
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2.a) b)
Explain the term speed feed and depth of cut as applicable to grinding work. Explain any two methods of grinding thread forms.
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7.a) b) 8.a) b)
Explain the quick return mechanism of Ram in a shaper. Distinguish between shaper and planner. $$$
H.S.S side and face cutter whose diameter is 150 mm and that has 10 teeth. The · cutting speed is 50m/min and feed is 0.25 mm per tooth. Determine (i) Table feed in · mm/min (ii) Total cutter travel (iii) Time required to machine the slot. 7. Explain with simple illustrations. a) Reciprocating table type horizontal spindle surface ...
List out the practical considerations to be checked for continuous gas ... Explain how silica analysis is done in boiler water of power plant. 3. a) What is meant by ...
What do you understand by principles of planning a building? Prepare a typical · aspect diagram for the area where direction of prevailing breeze is from North-.
b) Draw the circuit diagram of 4-bit Johnson counter using D-flip flop and explain .... 6. a) Compare merits and demerits of ripple and synchronous counters.
Given: turbine diameter = 120m and turbine operating speed = 40 rpm at · maximum efficiency. Propeller type wind turbine is considered. 4. a) What is the basic ...
Obtain an expression for unit speed, unit discharge and unit power for a turbine. 2. a) What do you understand by air vessels? Explain with a neat sketch.
1.a) Obtain the expression for the resistance and capacitance for gas system. ... List various variables to be measured and controlled in nuclear power plant.
instructions at the beginning and end of this set of code in order to switch .... 5.a) Write an assembly language program that will examine an ASCII string of 100.
If the analog i/p voltage is +6.85 v, what will be the R-2R ladder · o/p voltage when ... b) Design a ramp generator using 555 timer having an output frequency of.
efficiency of the cycle and mean effective pressure for the cycle. ... b) Calculate the heat flux emitted due to thermal radiation from a black surface at · 6000.
8.a) Write a note on creep resistant materials. b) Explain all the ... b) Sketch the creep diagram, and explain the various stages of creep. @@@@@. Set No. 2.
What is the difference between radio compass and ADF? Explain the principle · and operation of Automatic direction finder. 6. Define analog and digital ...
endurance limit of a metal. b) What are the factors which affect the fatigue strength of materials? 7. a) What is creep? Draw an ideal creep curve and explain the ...
(i) Band Rate · (ii) Request Filter ... 3. a) Write the comparison between teleprinters and CRT terminals. b) What are the ... What savings does it offer? b) What is a ...
b) How does butadiene differ from isoprene? 4.a) Describe about the synthetic fiber industry in India. b) Write, with an example on each of the following.
graph. b) Draw the state space tree for m-closing graph using a suitable graph. 8. Present a program schema for a FIFO Branch & Bound search for a Least-Cost.
b) Explain the effect of Metallurgical variables on fatigue properties · 7.a) Explain Ductile to Brittle transition phenomenon. b) Compare charpy with Izod impact testing. 8.a) What is stress relaxation. Draw stress-strain curves for ductile and brit
Information Technology, Electronics and Control Engineering, Electronics and ... Computer Engineering, Computer Science and System Engineering) ..... Draw and explain the logic diagram of a master slave D flip-flop using Nand gates. ###.
Chemical Engineering, Mechatronics, Metallurgy & Material Technology, · Aeronautical ... b) What is cache memory? Where is it placed? What is its .... 7.a) Explain the steps involved in computing the coefficients of the regression · polynomial.
b) Classify the blast furnace stoves. What are the different values in the stove and · their functions? 3.a) What factors affect reducibility of iron ores? Discuss them.
1.a) Write the name of places for occurance of iron ores in India. b) Explain the process of either Sintering or Pelletizing. 2.a) Explain hearth, tuyeres, stack with ...
