Summer 2014 Metrology and Instrumentation Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
Diploma Engineering - SEMESTER–IV • EXAMINATION – SUMMER • 2014
Subject Code: 3341905 Date: 03-06-2014
Subject Name: Metrology and Instrumentation
Time: 10:30 am - 01:00 pm Total Marks: 70

Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. English version is considered to be Authentic.

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Q.1 (a) With the help of a neat sketch, explain the working principle of outside
micrometer and show 26.65 mm on it. 07

(b) Write a short note on Optical Bevel Protractor and find appropriate angle
gauges to produce 23º49‟24‟. 07

Q.2 (a) Describe the working principle of “Tombilson surface meter”. 07

(b) Explain the method to check roundness of a shaft with the help of "V" block
and dial indicator. 07

OR

(b) Define straightness and describe the indicator and autocollimator method to
measure it. 07

Q.3 (a) Explain the methods to measure the effective diameter of a screw thread. 07

(b) Define the following (1) Addendum( 2) Dedendum (3) Circular pitch
(4) Thickness of tooth (5) Diametral pitch (6) Module (7) Pitch Circle Diameter. 07

OR

Q.3 (a) Write a short note on Gear Tooth Vernier Calliper. 07

(b) Define the following as related to screw thread: 1) Major diameter 2) Minor
diameter 3) Effective diameter 4) Pitch 5) Lead 6) Helix angle 7) Flank 07

Q.4 (a) What are limit gauges?State their advantages and disadvantages. 07

(b) Describe any one method of Non-Destructive Testing in detail. 07

OR

Q. 4 (a) What are “GO” and “NOT GO” members of limit gauges.?Sketch a plug
gauge and explain them. 07

(b) State the advantages and limitations of Non-Destructive Testing. 07

Q.5 (a) Differentiate between resistance thermometer and thermocouple. 07

(b) Classify the pressure measuring devices and list the different transducers to
measure pressure. 07

OR

Q.5 (a) With the help of a neat sketch, explain Bellow type pressure gauge. 07

(b) Classify the different flow measuring devices and list the different transducers
to measure flow. 07

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Winter 2015 Metrology and Intsrumentation Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGINEERING – SEMESTER – IV-EXAMINATION – WINTER 2015
Subject Code: 3341905 Date: 09/12/2015
Subject Name: Metrology & Instrumentation
Time: 02:30 PM TO 5:00 PM Total Marks: 70

Instructions:
1. Attempt all questions.
2. Make Suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Use of programmable & Communication aids are strictly prohibited.
5. Use of only simple calculator is permitted in Mathematics.
6. English version is authentic.

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Q.1 Answer any seven out of ten. 14

1. Define: (1) Metrology (2) Inspection

2. State name of direct measuring instruments.

3. Define : Flatness

4. What is CLA value.

5. Define : Pitch of thread.

6. Define: Module.

7. Write advantages of LVDT.

8. State why calibration is necessary?

9. State application of Thermometer.

10. Differentiate between Accuracy and Precision.

Q.2 (a) Explain the functions of inspection. 03

OR

(a) Explain the need of end standard. 03

(b) Write short note on Non destructive testing ( NDT ). 03

OR

(b) Explain in brief interchangeability and selective assembly. 03

(c) Draw neat sketch of height gauge. 04

OR

(c) Draw neat sketch of gear tooth vernier. 04

(d) Explain principle and working of height gauge. 04

OR

(d) Explain principle and working of gear tooth vernier. 04

Q.3 (a) Explain in brief any one straightness measuring method. 03

OR

(a) Explain in brief any one flatness measuring method. 03

(b) Draw neat sketch of screw thread and label its elements. 03

OR

(b) Explain working principle of stylus instruments. 03

(c) How angle is measured with help of sine bar. 04

OR

(c) Explain the wringing process for joining slip gauge. 04

(d) Select most appropriate slip gauges from M-112/1 set for following
dimensions. (1) 34.4785 (2) 72.985 04

OR

(d) Explain working and application of angle dekkar. 04

Q.4 (a) Write short note on calibration of vernier caliper. 03

OR

(a) Write short note on dial indicator 03

(b) Describe Three wire method for measuring an effective diameter of thread. 04

OR

(b) Explain Parkinson’s gear tester. 04

(c) Explain the working principle of radiation pyrometer with neat sketch. 07

Q.5 (a) Write short note on dead weight piston gauge. 04

(b) Write short note on capacitance type transducer. 04

(c) Write short note on rotameter. 03

(d) Name different limit gauges, state their applications. 03

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Winter 2016 Metrology and Instrumentation Question Paper

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GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGINEERING - SEMESTER–IV • EXAMINATION – WINTER - 2016
Subject Code: 3341905 Date: 28- 11-2016
Subject Name: Metrology and Instrumentation
Time: 02:30 PM TO 05:00 PM Total Marks: 70

Instructions:
1. Attempt all questions.
2. Make Suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
4. Use of programmable & Communication aids are strictly prohibited.
5. Use of only simple calculator is permitted in Mathematics.
6. English version is authentic.

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Q.1 Answer any seven out of ten.  14

1. Write the functions of Telescopic gauge?

2. What is wringing process?

3. Find the least count of the vernier with minimum of 0.5mm on main scale and
50 vernier divisions.

4. Define Roundness.

5. What is the use of Talysurf Tester?

6. State the full form i)CLA ii)RMS

7. Name the 2 methods for measure Gear tooth profile.

8. List the elements of internal Gear.

9. Name 4 limit gauges.

10. Name 4 pressure measuring devices.

Q.2 (a) List the linear measuring instruments with its Least count. 03

OR

(a) Differentiate the Centralized & Decentralized inspection. 03

(b) What is least count? How to find the least count of micrometer? 03

OR

(b) Write the uses of Slip gauges. 03

(c) Draw the labeled diagram of vernier calliper. 04

OR

(c) Draw the labeled diagram of vernier height gauge. 04

(d) Write the working principle of outside micrometer and show 25.15 mm On it. 04

OR

(d) Draw the labeled of bevel protactor. 04

Q.3 (a) Draw the symbol of surface roughness with complete detail. 03

OR

(a) Draw symbol of i)Roundness ii)Parallelity iii)Perpendicularity. 03

(b) State the advantages of non destructive testing. 03

OR

(b) Name the NDT methods. 03

(c) Explain with diagram roundness measurement. 04

OR

(c) Explain the working of dial indicator with diagram. 04

(d) Explain the Calibration of instrumentations. 04

OR

(d) Explain the working of sine bar with diagram. 04

Q.4 (a) List the types of gear and explain module. 03

OR

(a) Name 4 pressure measuring device and draw diagram of pitot tube. 03

(b) Explain the working of Bourdon tube pressure gauge. 04

OR

(b) What is comparator? Classify the Comparators. 04

(c) Explain with neat sketch “Gear tooth Vernier caliper”. 07

Q.5 (a) Explain the best wire size for thread measurements. 04

(b) Explain the principle of thermocouple. 04

(c) Name the various types of transducers. 03

(d) Explain plug gauge with the help of diagram. 03

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