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Paper / Subject Code: 32621 / Mechanical Measurements & Controls

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1T01435 - T.E.(Mechanical) Engineering)(SEM-V)(Choice Base Credit Grading System ) ((R- 19) (C

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Scheme) / 32621 - Mechanical Measurements & Controls

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QP CODE: 10028692 DATE: 23/05/2023.

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Time: 3 Hours Total Marks: 80

3
6
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N.B: 1) Question No. 1 is compulsory.

1
39

9
6

2
1
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3
66
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A9
B
80
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59

60

82
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1D
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6
4) Use of Graph paper is allowed.

0B
80
A

F
9
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60
4E

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01
3
5) Figures to the right indicate full marks.

5
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1D
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6
93

80
A

95

9F
5
2A

0
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01
F3
1. Answer of the following questions(any Four). 20

6
4

1D
B3

6
3

80
A
B8

95

F
9

B5
i) Define wavelength standard and state the significance of using it.

59
2A

60
4E

D6
F3
10

1D
3

F6
3

5A
8

95
00

B
A9
ii) Explain different types of fits with suitable examples and sketches

9
E

6
F3
08

10

5
D
4
2

1D
B3
3
66

5A
B8

95
iii) Differentiate between roughness and waviness.
0

A9
0

4E
9F

D6
F3
8

10

5
0

82

1D
B3
D5

iv) Define and explain i) Resolution; ii) Threshold; iii) Hysteresis

3
6

5
00

A9
F6

39
B5
4E

D6
8
61

0
59

AF
60

82
1
v) Briefly explain the construction and working of a strain gauge load cell.

B3
3
5D

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0
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9
6

0B
80

B5
2A

E
F

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1

vi) Using Routh’s criterion examine the stability of a control system whose characteristic
39

4
0
6

01

B3
D5

3
66
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5A
8
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equation is S5 + S4 + 2S3 + 2S2 + 3S + 15 = 0

9
B
80
5

2A

4E
F
61

0
9

3B
B5

01
3

D5

93
66
5D

B8
AF

EB
B3

80
10

2A
9F
61

10
9

2. (A) Define Interferometry. Explain Laser Interferometer with neat sketch.

5

34
60
4E

3
B

5
D

B8
00
F

1D
B3

A9
6
93

(B) Reduce the given block diagram to a it’s canonical form and hence obtain equivalent 10
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08

10
39
B5

9
2A

4E

82
𝑪(𝒔)
5

66
5D

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1D
3

transfer function, 𝑹(𝒔).

0B
3

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08
39
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59
2A

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01
10

66
4

1D
B3
93

80
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00

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59

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1
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3
66
5D

5A
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39

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60
6

82
01
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80
5

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61

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39
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34
0

82
1
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66

3. (A) Explain generalized measurement system elements with block diagram. Describe 10
D

0
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B3

A9
0B
80
A

9F
1

functions with suitable examples.

39
5

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82
01
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6
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1D
3

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𝑲
0B
80
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(B) A unity feedback system has 𝑮(𝒔) = 10

EB

39
B5

59

60
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01

𝑺(𝟐+𝑺)(𝟒+ 𝑺)
34

1D
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A

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a. If r(t)= 2t and K= 4, find steady state error.

4
82

1D
3

F6
3

95
EB

b. If it is desired to have steady state error to be 0.4, find corresponding value of “K”
9
0B

59
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c. Find steady state error if input is changed to 2+6t, and value of K to 10.
1D
3

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01

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ii)
5 0

vi)
iv)
0

iii)
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that:
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6. Write short note on (any Four)

EB 39 F6 0B EB 39 9 10 4E
3B 5D 6 8 5 F 6 B
transfer function as follows:

Ultrasonic Flow Meter

5A 6 1D 0 80 2 B5 D 61 60 8 2A
B3
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A 8 9
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9
00 3 4 AF
F6 B EB 39 F 10 E 39

Floating Carriage Micrometer

D6 60 82 3B 5D 66 B8 B3 5D
6 0 2
Tolerance for hole = 25 i
1D 80 A9

Capacitive Pressure Transducer

3 5A 1D 80 A9 B5 61

Frequency Domain specifications

01 0 A

Repeatability and Reproducibility

59 F3 5 3
F6 0B 4E
95 9F 1 0 4E F 3
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B3 B 9F
i = 0.40 D1/3 + 0.001D micron

60 82 66 95

Types of Measurement System Inputs

B3
B5 D6 0 82 B D 66

Page 2 of 2
80 A9
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01 3 1D 80 A9 5 A 1 08
𝐆(𝐬)𝐇(𝐬) =

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82 B3 95 F 6 0B E B 3 9 9 F 10
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Wear allowance 10% of gauge design

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************
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absolute optical encoder. Give examples of their use.

A9 61
𝑲

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𝒔𝟐 (𝒔 +

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Fundamental deviation of the hole= 16 D 0.44

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00 93 5A 1D 0 A9
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4. (A) Explain principle, construction and working of Parkinson Gear Tester

F6 B8 95 F 0B
60 B3 6
Paper / Subject Code: 32621 / Mechanical Measurements & Controls

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34 AF 1D 80 A9
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5A
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(B) Design a general type of Go and No Go plug gauge for inspecting a hole 25 d8. Given 10
10
(B) Draw the root locus and comment on the stability of the control system having open loop 10
10

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80
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5B
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Paper / Subject Code: 32621 / Mechanical Measurements & Controls

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June 3, 2024 02:30 pm - 05:30 pm 1T01435 - T.E.(Mechanical) Engineering)(SEM-V)(Choice

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Base Credit Grading System ) ((R- 19) (C Scheme) / 32621 - Mechanical Measurements & Controls

25
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QP CODE: 10057391

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51
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5
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Time: 3 Hours Total Marks: 80

51

25
2
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5

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5

15
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1
25

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5
9
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N.B: 1) Question No. 1 is compulsory.

X5

X5
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15
5Y
9X
1
25
B9

B9
B5
2) Attempt any THREE questions out of remaining FIVE questions.

2
B
B
X5

5
15

5
Y

5
5Y
9X
51

51
25
B9
3) Assume suitable data wherever necessary.

B5

2
B
B

YB
5

X5
5
5Y

5
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15
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1
4) Use of Graph paper is allowed.

1
5

5
B9
5

9
B5

B5
52

52

2
B

5B

X5
5
Y
5) Figures to the right indicate full marks.

5Y
9X

Y
X
1

51
5

25
9
5

B9
2

2
5B

B
YB

B
5

5
5

15
5Y
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9X

9X
51

51
5

B5
52

2
B
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1. Answer of the following questions (any Four). (20)

5
5

5Y
X

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51

51
25

25
9

B9
5

B9
52
i) Differentiate between primary, secondary and tertiary standards.
5B
YB

YB

YB
X5

X5

15
9X
1

51
25

25
B9

25
9
5

B5
ii) Explain roughness and waviness with suitable diagram.
B
B

B
B
5

X5
15

15
Y

5
Y
9X

5Y
9X

51
25

25
B5

B5

iii) Define: Accuracy, Precision, Span and Range of measuring instruments.

B9
B

52
B

B
5

5
5
5Y

5
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15
Y
X

9X
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1
5

iv) What is RTD? How does it work?

5
9
B5

9
B5

B5
52

52
B

5B

5B
5
5
Y

Y
9X

5Y
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9X
1

v) Define the term transfer function with its significance in control system.

51
5

5
9
B5

5
2

2
5B

52
5B

B
B

YB
5

X5
5Y

5
Y
X

9X
51

vi) Write a note on Frequency domain specifications.

51

51
25
9

25
9
2
5B
YB

5B
B

5B
YB
5

X5

X5
Y
X

2. (A) Define the term gauge factor of a strain gauge with its significance. (05)
51

51

51
25

25

5
9

B9

B9
2
5B
YB

YB

YB
X5

X5

X5

(B) Describe with neat diagrams the working of McLeod gauge for the pressure measurement. (05)
15

15
51
5

5
B9

25
B9

9
5

B5
2

2
YB

5B
B
X5

(C) Find the shaft and hole dimensions with tolerance for a 90 H8 e9 pair with the following (10)
15

5Y

5Y
9X

9X
51

51
5
9
B5

data:
2

52
B

52
B
B

B
YB
5
15

5
Y

15
9X

9X

9X
1

90 mm lies in the diameter step of 80 to 100 mm

5

25
5

B5

5
52
B
YB

5B

5B
YB

Upper deviation for e shaft = 11 D 0.41

X5
15

Y
9X

51
25

5
B5

B9
5

Tolerance unit i = 0.45 D1/3 + 0.001D micron

52

52
5B

YB
X5

5Y

15
Y
9X

9X
1

Also find the type of fit produced.

25
B9

25
5

5
2

5B
B

5B
B
X5

X5
Y

Y
X

3. (A) Classify control system with suitable examples. (05)

1

51
25

5
B9

B9
5

B9
2
B

YB
X5

X5
15

15
Y

15

(B) What is difference between unilateral and bilateral tolerances? Why is unilateral tolerance (05)
5

25
9
5

9
B5

B5
2
B
YB

5B

preferred over bilateral tolerance?

X5

5
5

5Y

5Y
9X
51

51
25

(C) Describe with neat diagrams the working principle of the magnetic flow meter and (10)
9

52

52
B
B

5B
YB
5
Y

ultrasonic flow meter for flow measurement.

9X

9X
51

51
25

25
5B
B

5B
YB
X5

X5
5Y

51

51
5
B9

B9
52

52
YB

YB
15

15
9X

9X
5

25
B5

B5
2
B

5B
X5

X5
5

5Y
1

51
B9
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B9
2
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YB
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15

15
25

25
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Paper / Subject Code: 32621 / Mechanical Measurements & Controls

9X
51
25
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B5

5B
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15
5Y

9X
51
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B5
(A) What is the difference between direct and indirect measuring instrument? Give one (05)

52
4.

5B
YB
X5
5
Y
9X

51
example of each type.

51
5

5
9
2

2
5B

B
B

B
5

5
5
5Y

Y
9X

9X
(B) A system is represented by the characteristic equation (05)

51

51

25
2
B
YB

B
B
P(S) = S6+S5+8S4+12S3+20S2+16S+16 = 0,

X5
5

15
Y

Y
X
1
25

25
Determine the stability of the system by using Routh’s criterion.

5
9
5

B9
B5

2
5B
B
X5

X5
Y

15
5Y
9X
1
25
B9
(C) Define Interferometry. Describe with neat sketch the working principle of Laser (10)

B9
B5
2
B
B
X5

5
15

5
Y

5
5Y
interferometer.

9X
51

51
25
B9
B5

2
B
B

YB
5

X5
5
5. (A) Describe with neat sketch 'Two Wire Method' in screw thread measurement. 5Y (10)

5
Y

15
X
1

1
5

5
B9
5

9
B5

B5
52

52

2
B

5B
(B) Define desired input, modifying input and interfering input for measuring instruments (10)

X5
5
Y

5Y
9X

Y
X
1

51
5

25
9
5

B9
with suitable examples. Also suggest the methods to minimize the effect of modifying 2

2
5B

B
YB

B
5

5
5

15
5Y
9X

9X

9X
51

51
and interfering input.
5

B5
52

2
B
YB

B
YB

5B
5
5

5Y
X

X
6. (A) A unity feedback system is characterized by open loop transfer function (10)

X
51

51
25

25
9

B9
5

B9
52
5B
YB

YB
𝟐𝟓

YB
X5

G(S) = X5

15
9X
1

51
25

𝑺(𝑺+𝟓)

25
B9

25
9
5

B5
B
B

B
B
5

X5
15

15

For a unit step input, determine a) Rise time, b) Peak time, c) Settling time d) Peak
Y

5
Y
9X

5Y
9X

51
25

25
B5

B5

B9
B

overshoot.

52
B

B
5

5
5
5Y

5
Y

15
Y
X

9X
1

1
5

5
9
B5

9
B5

B5
52

(B) A system is characterized by transfer function (10)

2

52
B

5B

5B
5
5
Y

Y
9X

5Y
X

9X
1

51
5

𝑲
9
B5

5
2

2
5B

52
5B

G(S) H(S) = B
B

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5

X5

𝑺 (𝑺+𝟓) (𝑺+𝟏𝟎)
5Y

5
Y
X

9X
51

51

51
25
9

25
9
2
5B
YB

5B
B

5B
YB
5

X5

Determine the stability of the system by using root locus method.

X5
Y
X
51

51

51
25

25

5
9

B9

B9
2
5B
YB

YB

YB
X5

X5

X5
15

15
51
5

5
B9

25
B9

9
5

B5
2

_____________________________
YB

5B
B
X5

5
15

5Y

5Y
9X

9X
51

51
5
9
B5

52
B

52
B
B

B
YB
5
15

5
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15
9X

9X

9X
1
5

25
5

B5

5
52
B
YB

5B

5B
YB
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15

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9X

51
25

5
B5

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5
52

52
5B

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X5

5Y

15
Y
9X

9X
1

25
B9

25
5

5
2

5B
B

5B
B
X5

X5
Y

Y
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1

51
25

5
B9

B9
5

B9
2
B

YB
X5

X5
15

15
Y

15
5

25
9
5

9
B5

B5
2
B
YB

5B
X5

5
5

5Y

5Y
9X
51

51
25

52

52
B
B

5B
YB
5
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9X

9X
51

51
25

25
5B
B

5B
YB
X5

X5
5Y

51

51
5
B9

B9
52

52
YB

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15

15
9X

9X
5

25
B5

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2
B

5B
X5

X5
5

5Y
1

51
B9
5

B9
2
YB

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15

15
25

25
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Paper / Subject Code: 32621 / Mechanical Measurements & Controls

9E
6C
73
90
1T01435 - T.E.(Mechanical) Engineering)(SEM-V)(Choice Base Credit Grading System ) ((R- 19) (C Scheme) / 32621 - Mechanical

1A
A5
5D
EB

B5

5
Measurements & Controls QP CODE: 10037564 DATE : 22/11/2023

9E
6C
73
90
Time: 3 Hours Total Marks: 80

5A
45

1A
5D
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B5
FC

A
N.B: 1) Question No. 1 is compulsory.

6C
73
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A
5
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4

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FC

3A
60
2) Attempt any THREE questions out of remaining FIVE questions.

B
90

5A
45
85

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FC
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3) Assume suitable data wherever necessary.

3A
0

B
05
56

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45
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7
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8

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4) Use of Graph paper is allowed.

5D
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C

60
A9

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F

73
0
45
5

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9
C1
5) Figures to the right indicate full marks.

5D
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C
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60
A9
56

90
5
85

0
5
1
AB

4
F
1. Answer the following questions (any Four).

E
20

5D
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C

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FC

60
A9
6

0F
A5

0
5

45
85
5
i) What is Metrology? Explain different types of standards.

B9
C1
AB

0F
9E
73

FC
FC

5E
6

6
A
A5
5D

B5
ii) With respect to surface roughness parameters explain the following terms:

85

0
E5
1

C4
F
C
73
90

C
5A

60
9
6
i) Ra; ii) Ry; iii) Rz

0F
F
1A
5D
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B5

5
5
A

0F
E
6C
3
0

C
C
5A
45

iii) Define:

9
D7
9

56

0F
5F
1A
EB

B5
FC

A
5

C8
Sensitivity

0F
i)

9E
6C
3
90

5A
45
F0

56
F
1A
5D
B

B5
ii) Precision
FC

5
A
60

C8
E
6C
3
0

A
5
85

F0

A9
7
iii) Threshold
B9
4

5F
A5
5D

5
FC
FC

60

1
B
5E

9E
C
73
0

A
5

F0
E5

iv) Explain the working of LVDT with a neat sketch.

B9

56
4
C8

1A
A5
5D
C
0
A9

AB
E
56

0F
F

6C
73
90
v) Distinguish between open loop and closed loop control systems.
45
5
C1

0F
E

A5
5D
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B5
FC
FC
A9
56

vi) Using Routh’s criterion examine the stability of a control system whose characteristic
56

73
0

5A
5
0
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B9
1
AB

4
8

0F

5D
C

C
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3A
9

equation is 4S5 + 2S4 + 4S3 + 8S2 + 2S + 10 = 0 E

56

56

F
A
A5

0
45
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5

D7
B9
C1
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8
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73

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0
9

05
5E
6

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5
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85

10
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2. (A) Explain with a neat sketch the N.P. L. flatness interferometer.
9E
6C
73
90

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A

60

5E
0F
A
5
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B5

85
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3A

1
05

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(B) Design a general type of Go and No Go plug gauge for inspecting a hole 25 D8. Given 10
6C

C
5A
45

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D7
9

0F
F
EB

B5
FC

85
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3A

that:
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5

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0

FC
A
45
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9
D7
9

56

56
1A
A5
EB

𝟑
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60

i = 0.40 √𝑫 + 0.001D micron

AB
05

C8
6C
73
45
85

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9
9

5F
A
5
5D
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B5
FC

Tolerance for hole = 25 i

60

9E
6C
73
0

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5
5

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9
C4
8

1A
5
5D
B

B5

Fundamental deviation of the hole= 16 D 0.44

FC

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60

5E
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3
0

A
85

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5

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4
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B5

Wear allowance 10% of gauge design

C
FC

5
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56

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0

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45
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8

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60
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05
05
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45
5

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3. (A) Explain the term clearance fit with respect to limit fit diagram
C8
C

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0
9

05
5E
6

56

F
F
1A
5

0
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B9
AB

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8

(B) Derive necessary expression to calculate the best wire diameter. 05

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6C

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9

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6

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1A
A5

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85
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(C) Draw the Root-Locus of the system having 10

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𝑲
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𝑮(𝒔)𝑯(𝒔) =
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𝑺(𝑺 + 𝟏)(𝑺 + 𝟒)
F
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90

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𝑪(𝒔)
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Range and Span

transfer function, 𝑹(𝒔).

Mc-Leod Gauge
F F E 9
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6. Write short note on (any Four)

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Magnetic Flow Meter

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Parkinson's Gear Tester

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function with suitable examples.

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𝑮(𝒔)𝑯(𝒔) =

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05 E5 F0 B9 5A A9 56 45
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iii) Steady state error for input magnitude 2

3A 1 A 85 4 5 7 3 6 C FC FC 5D

-------------
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𝟏𝟎𝟎 (𝒔 + 𝟐)

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Paper / Subject Code: 32621 / Mechanical Measurements & Controls

05 AB 9E 0F B9 A 5A
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4. (A) Define gauge factor of strain gauges. Derive an expression for gauge factor.

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Paper / Subject Code: 32621 / Mechanical Measurements & Controls

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1T01435 - T.E.(Mechanical) Engineering)(SEM-V)(Choice Base Credit Grading System ) ((R-20-21) (C Scheme) / 32621 -

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Mechanical Measurements & Controls Time: 3 Hours Total Marks: 80

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QP CODE: 10013250 DATE: 22/11/2022

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N.B: 1) Question No. 1 is compulsory.

9
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29
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34
31

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1. Answer the following questions.

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42

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i) Distinguish between Line, End and Wavelength Standard.

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9
73

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4

41

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4

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22

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7

12
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42

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29
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3
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While measuring the speed of steam turbine with stroboscope, stationary image was
BF

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observed for three consecutive stroboscope settings of 3000, 4000 and 5250 flashes

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73
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1
2B

4
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F4

22
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42
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per minute. Calculate the rotational speed of turbine.

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1E

49
31

BD

73
5

2E
F

24
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F4
B
2E

E2
12

29
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2. (A) Reduce the following block diagram and find the transfer function. 10
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3

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41
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41

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12

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44

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31
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4

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31
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(B) What is Taylors principle, explains in detail? Write note on Hole Basis System and 10
F

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49
31

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3
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7
2B

24
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Shaft Basis System.

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29
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31

3
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41
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3. (A) For a particular unity feedback system 10

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12
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10
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𝐺(𝑠) =
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𝑆(𝑆 + 1)(𝑆 + 5))

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29
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9

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(B) b) A unity feedback system characterized by an open loop transfer function 10

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31
2

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5F

34

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44

1
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Determine the gain K. so that the system will be stable.

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2

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5F

34

9
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44

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2

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29

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i)
D

ii)
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iii)
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interferometer.

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Tomlinson surface meter .

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3

Optical encoder
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Two wire method

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(B) Write short note on (any Two)

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E7 4

Parkinson’s gear tester

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𝐺(𝑠)𝐻(𝑠) =

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5. (A) Draw the Root-Locus of the system having

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𝐾

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𝑆(𝑆 + 5)(𝑆 + 10)

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Paper / Subject Code: 32621 / Mechanical Measurements & Controls

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suggest method to minimize the effect of Modifying & Interfering inputs.

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4. (A) Explain principle of interference. How flatness can be checked with help of optical

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principle. State one major advantage and disadvantage of this instrument over

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10
6. (A) What are the different elastic transducers used for pressure measurement? Illustrate 10
(B) Draw neat labelled diagram of Taylor Hobson Talysurf and briefly explain working 10
(B) What are desired, Modifying, Interfering input? Explain with example of each. Also 10

10
10

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QP CODE: 10013250

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