B.TECH - Semester 6 metrology and instrumentation Question Paper 2019 (jun)
Practice authentic previous year university questions for better exam preparation.
Sample Questions
- Differentiate between accuracy and precision.
- What is sine bar? Why does it have this name?
- Define the terms primary texture and secondary texture. Name two instruments for measuring surface texture.
- State how surface finish is designated on a drawing?
- State 'Taylor's Principle' for the design of limit gauges.
- Name the various elements of the spur gear which are checked for accuracy of gear.
- Find the value of allowance and tolerance for a hole and shaft assembly for the following dimensions of mating parts. Hole : $25_{0.00}^{+0.05}$, shaft : $25_{-0.05}^{-0.02}$.
- Differentiate between primary and secondary transducers.
- Two resistors R1 and R2 are given as $1000 \pm 25 \Omega$ and $500 \pm 10 \Omega$. Determine the equivalent resistance when these two are connected in a (a) parallel and (b) series. Also determine the uncertainties in these two cases
- Write notes on machine vision systems. ( $\mathbf{1 0} \boldsymbol{\times} \mathbf{4} \boldsymbol{=} \mathbf{4 0}$ Marks) P.T.O. Answer any one questions from each module. Each question carries $\mathbf{2 0}$ marks. Module - I
- (a) Describe any three methods of accurately measuring angle. ..... 10
- (b) Distinguish between line and end standards? Give examples. ..... 10 OR
- (a) Explain the principle of GO and NO-GO gauges. ..... 10
- (b) Explain working of optical dividing head. ..... 10 Module - II
- (a) Explain the methods of measurement of major elements of a gear. ..... 15
- (b) Describe any two methods of evaluating surface finish of a surface. ..... 5 OR
- (a) What is a comparator? What are the different types of comparators? Discuss the advantages and disadvantages of different types of comparators. ..... 12
- (b) Explain the working principle of angle dekkor? Write down some typicalapplications.8 Module - III
- (a) Explain the working of a resistance strain gauge? Derive an expression for- gauge factor and discuss the significance of gauge factor in strain measurement. ..... 15
- (b) With a neat sketch explain the working of any two types of dynamometers. ..... 5 OR 2G - 3217
- (a) Differentiate between static and dynamic measurements. Explain static and dynamic characteristics of a measurement system.
- (b) Explain the advantages, limitations and application of strain gauge traducers.