AALIM MUHAMMED SALEGH COLLEGE OF ENGINEERING
DEPARTMENT OF MECHANICAL ENGINEERING

QUESTION  BANK

Name: ENGINEERING  METROLOGY  &  MEASUREMENTS	Year/Sem :III/ V

UNIT-I

CONCEPT  OF  MEASUREMENT

Part-  A  (2  Marks)

1.	Differentiate  between  sensitivity  and  range  with  suitable  example.

2.	Define system error and correction
3.	Define: Measurand.

4.	Define:  Deterministic  Metrology.

5.	Define  over  damped  and  under  damped  system. 

6.	Give  any  four  methods  of  measurement 

7.	Give  classification  of  measuring  instruments. 

8.	Define True size:
9.	Define Actual size

10.	What  is   Hysteresis 

11.	What  is   Range  of  measurement?: 

12.	Define  Span.

13.	What  is  Resolution: 

	Part  –  B  (16  Marks)		
1.	Draw  the  block  diagram  of  generalized  measurement  system  and  explain  different  stages		
	with  examples.	(16)	
2.	Distinguish  between  Repeatability  and  reproducibility	(16)	
3.	Distinguish  between  Systematic  and  random  errors	(16)	
4.	Distinguish  between  Static  and  dynamic  response.	(16)	
5.	Describe  the  different  types  of  errors  in  measurements  and  the  causes.	(16)	
6.	List  various  types  of  measuring  instruments  and  explain  each  one  of  them	(16)	
7.	List  the  various  measurement  methods  and  explain	(16)	
  8.   Briefly  discuss  on  the  applications  of  measuring  instruments                               	(16)	
  9.  Briefly  discuss  on  calibration  of  temperature  measuring  devices  with  suitable  examples	(16)	

UNIT-II

LINER  AND  ANGULAR  MEASUREMENTS

Part-A  (2  Marks)

.1.   List  the  various  linear  measurements?

2	What  are  the  various  types  of  linear  measuring  instruments? 

3.	List  out  any  four  angular  measuring  instrument  used  in  metrology 

4.	What  is  comparators? 

5.	Classify the comparator according to the principles used for obtaining magnification. 6. How are all mechanical comparator effected? 

.	7.  State  the  best  example  of  a  mechanical  comparator. 

8.	Define  least  count  and  mention  the  least  count  of  a  mechanical  comparator. 

9.	How  the  mechanical  comparator  is  used?  State  with  any  one  example. 

10.  State  any  four  advantages  of  reed  type  mechanical  comparator.

	Part  –  B  (16  Marks)		
1	What  is  the  constructional  difference  between  an  autocollimator  and  an  angle  dekkor.	(16)	
2.	How  the  displacements  are  measurement  using  laser  interferometer.	(16)	
3.	Explain  with  the  help  of  neat  sketches,  the  principle  and  construction  of  an  auto-collimator  .(16)	
4	Explain  the  working  principle  of   mechanical  comparator  with  a  neat  sketch.	(16)	
5.	Explain  the  working  principle  of  Electrical  comparator  with  a  neat  sketch	(16)	
6.	Explain  the  working  principle  of  pneumatic  comparator  with  a  neat  sketch.	(16)	
7.	Explain  with  the  help  of  neat  sketches,  the  principle  and  construction  of  an		
	Angle  dekkor.	(16)	

UNIT-III

FORM  MEASUREMENTS

Part-A  (2  Marks)

1.	Name  the  various  methods  for  measuring  effective  diameter. 

2.	Name  the  various  methods  for  measuring  pitch  diameter. 

3.	Name  the  two  corrections  are  to  be  applied  in  the  measurement  of  effective  diameter. 

4.	What  is  best  size  of  wire? 

5.	Define.  Drunken  thread 

6.	What  is  the  effect  of  flank  angle  error? 

7.	What  are  the  applications  of  toolmaker's  microscope? 

8.	Define:  Periodic  error. 

9.	What  are  the  commonly  used  forms  of  gear  teeth? 

10.	what  are  the  types  of  gears? 

11.	Define:  Module 

12.	Define:  Lead  angle 

13   What  are  the  various  methods  used  for  measuring  the  gear  tooth  thickness?

14.	Name  four  gear  errors. 

15.	Name  the  method  used  for  checking  the  pitch  of  the  gear. 

	Part-B  (16  Marks)		
1.	Explain  the  construction  and  working  of  floating  carriage  micrometer	(16)	
2.	How  are  the  major  and  minor  diameters  of   thread  measured.	(16)	
3.	Define  various  terminologies  related  with  screw  thread	(16)	
4.	Define  various  terminologies  related  with  screw  gears	(16)	
5.	Explain  any  two  taper  measurements  method.	(16)	
6.	Explain  the  construction  and  working  of  Gear  tooth  vernier	(16)	
7.	Explain  a  method  used  in  the  measurement  of  surface  finish  and  flatness	(16)	

UNIT-IV

LASER  AND  ADVANCES  IN  METROLOGY

Part-A  (2  Marks)

1.	Name  the  different  types  of  interferometer? 

2.	Name  the  common  source  of  light  used  for  interferometer 

3.	What  is  crest  and  trough? 

4.	What  is  wavelength? 

5.	What  is  meant  by  alignment  test  on  machine  tools? 

6.	List  the  various  geometrical  checks  made  on  machine  tools. 

7.	Distinguish  between  geometrical  test  and  practical  test  on  a  machine  tool. 

.8.  What  are  the  main  spindle  errors? 

9.  Write  the  various  tests  conducted  on  any  machine  tools

10.	Why  the  laser  is  used  in  alignment  testing? 

11.	Classify  the  machine  tool  test. 

12.	What  are  the  different  types  of  geometrical  tests  conducted  on  machine  tools? 

13.	What  is  CMM? 

	Part  –  B  (16  Marks)		
1.	Explain  the  interferometric  measurement  of  angle	(16)	
2.	Briefly  explain  Computer  Aided  inspection  and  Digital  devices	(16)	
3.	Explain  the  working  of  Laser  Interferometer	(16)	
4.	Explain  Different  types  of  CMM	(16)	
5.	Explain  the  constructional  features  and  application  of  CMM.	(16)	
6.   Explain  how  profiles  are  checked  using  laser  viewers	(16)	
7.	Explain  the  laser  telemetric  system  with  a  suitable  diagram	(16)	
8.	Elaborate  on  the  topic  of  geometrical  tolerance	(16)	

		UNIT-V		
		MEASUREMENT  OF  POWER,  FLOW  AND		
		TEMPERATURE  RELATED  PROPERTIES		
		
Part-A  (2  Marks)		
	1.	What  are  load  cells?		
	2.	Give  the  principle  of  hot  wire  anemometer		
	3.	State  any  four  inferential  type  of  flow  meters		
	4.	What  is  thermopile?		
	5.	Mention  the  principle  involved  in  bimetallic  strip.		
	6.	What  is  thermocouple?		
	7.	What  is  a  Kentometer?		
	8.	What  is  the  principle  involved  in  fluid  expansion  thermometer?		
	9.	What  is  the  need  of  inspection		
	10. What  are  the  important  elements  of  measurements?		
	11.	What  is  the  basic  Principle  of  measurement:		
		Part  –  B  (16  Marks)		
1.  Briefly  explain  various  methods  of  measuring  torque	(16)	
2.	Briefly  explain  various  methods  of  measuring  temperature	(16)	
3.	Briefly  explain  various  methods  of  measuring  flow	(16)	
4.	Briefly  explain  various  methods  of  measuring  power	(16)	
5.	Briefly  explain  various  methods  of  measuring  force	(16)	
6.	Explain  working  of  Pressure  thermometer  and  resistance  thermometer.	(16)	
7.	Explain  the  construction  and  working  of  Venturimeter  and  Rotameter	(16)	
8.	Explain  the  construction  and  working  of  Bimetallic  strip  and  Thermocouple	(16)