Top 150+ Solved Metrology and Measurements MCQ Questions Answer
Q. Which of the following is true for trigger type probe system used in computer controlled CMM?
a. bucking mechanism is a 2 point bearing
b. current coordinate position stored when circuit is close
c. contacts of point bearing arranged at 90 degree
d. contacts of point bearing act as electrical micro switches
Q. What does the total number of pixels in the region defines?
a. perimeter
b. area
c. intensity
d. brightness
Q. For which of the following regions, compactness is minimal?
a. rectangle
b. square
c. irregular
d. disk
Q. What is the tolerance of the straightness of a line?
a. maximum deviation from the straight line joining two extremities
b. maximum deviation from the middle point of straight line joining two extremities
c. minimum deviation from the straight line joining two extremities
d. minimum deviation from the middle point of straight line joining two extremities
Q. For checking straightness, straight edge is placed over a surface and these two are viewed against the light. Which of the following option true if colour of light is red?
a. gap between 0.12 to 0.17 mm
b. gap between 0.2 to 0.7 mm
c. gap between 1.7 to 2 mm
d. gap between 0.0012 to 0.0017 mm
Q. What is the name of a pair of straight edges?
a. drum sticks
b. lower pair
c. winding sticks
d. self closed pair
Q. What is the position of straightness interferometer in straightness measurement optics?
a. before laser head
b. after straightness reflector
c. between laser head and straightness reflector
d. no need of interferometer
Q. What is the range of straightness measurement in straightness measurement optics?
a. ±2.5 mm
b. ±5 mm
c. ±10 mm
d. ±20 mm
Q. Which of the following is not the factor affecting the accuracy of straightness measurement by optics?
a. air turbulence
b. optics fixed rigidly
c. slope error
d. localised heat sources
Q. At which part of the precision straight edge is generally lapped?
a. edges only
b. base only
c. base and edges both
d. all over the surface
Q. What type of thread is formed on female screw gauge?
a. external thread
b. internal thread
c. both internal and external
d. major screw thread
Q. Which of the following option is true for truncation?
a. thread can be tranculated at crest only
b. thread can be tranculatd at root only
c. thread can be tranculated at crest and root both
d. thread can’t be tranculated at crest and root both
Q. What is dedendum for external threads?
a. radial distance between pitch and minor cylinder
b. radial distance between major and pitch cylinder
c. radial distance between major and minor cylinder
d. axial distance between major and pitch cylinder