PTU Punjab Technical University B-Tech May 2019 Question Papers 5th Semester Mechanical Engineering (MECH)
Total No. of Pages : 02
Total No. of Questions : 09
B.Tech.(ME) (2011 Onwards) (Sem.?5)
MECHANICAL MEASUREMENT AND METROLOGY
Subject Code : BTME-503
M.Code : 70604
Time : 3 Hrs. Max. Marks : 60
INSTRUCTION TO CANDIDATES :
1.
SECTION-A is COMPULSORY consisting of TEN questions carrying T WO marks
each.
2.
SECTION-B contains FIVE questions carrying FIVE marks each and students
has to attempt any FOUR questions.
3.
SECTION-C contains T HREE questions carrying T EN marks each and students
has to attempt any T WO questions.
SECTION-A
Q1 Answer briefly :
a. Differentiate primary, secondary and tertiary types of measurements.
b. Define hysteresis in measurement systems.
c. What is difference between accuracy and precision?
d. Define threshold and resolution.
e. How the least count of a vernier caliper is calculated?
f. Define gauge factor of a strain gauge.
g. What is the working principle of a thermocouple?
h. What is Mcleod gauge?
i. What is comparator? Name any two of them.
j. Explain the function of a driving dynamometer.
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SECTION-B
2.
What are systematic and random errors? How these errors are measured? What are various
precautions for minimizing these errors?
3.
Describe zero, first and second order measuring instruments.
4.
What is a dynamometer? Explain various types of dynamometers.
5.
What is a sine bar? Explain its application in measurements.
6.
What is flow visualization? Briefly explain various flow visualization techniques.
SECTION-C
7.
(a) Explain the construction and working of a Bourden tube pressure gauge with a neat
sketch.
(b) Explain the working principle of piezo-electric transducer. What are its advantages
and limitations?
8.
What is dynamometer? How they are classified? Describe transmission and driving
dynamometers.
9.
Write short notes on :
(a) Stroboscope
(b) Optical pyrometer
NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any
page of Answer Sheet will lead to UMC against the Student.
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This post was last modified on 04 November 2019