Top 150+ Solved Metrology and Measurements MCQ Questions Answer
Q. Which of the following is not a name of the major diameter of an external thread?
a. outside diameter
b. crest diameter
c. full diameter
d. cone diameter
Q. Which of the following is not true about the axial thickness of screw thread?
a. measured in direction perpendicular to the axis of thread
b. measured on pitch cylinder
c. distance between opposite faces of same thread
d. measured at the same thread
Q. What is the alternative name of functional diameter?
a. cone diameter
b. virtual diameter
c. root diameter
d. inside diameter
Q. What is a thread per inch in screw thread?
a. pitch in inches
b. axial distance moved by threaded part
c. reciprocal of pitch in inches
d. radial distance moved by threaded part
Q. Which of the following is not true about effective diameter?
a. also known as pitch diameter
b. it decides quality of fit between nut and screw
c. this is the diameter of minor cylinder
d. it is a very important dimension for screw threads
Q. Which of the following is true for the multiple start screw threads?
a. it is produced by a single helical groove
b. grooves should be different in spacing
c. it gives a quick transverse
d. it is formed in a transverse section on a cylinder
Q. Which of the following is the best for the examination of surface finish?
a. touch inspection
b. visual inspection
c. scratch inspection
d. microscopic inspection
Q. Which of the following material is not used for rubbing on the surface to be inspected in scratch inspection?
a. softer material
b. hard material
c. plastic
d. lead babbitt
Q. What is the limitation of microscopic inspection to check surface finish?
a. an average value is needed
b. small portion of surface can be detected at a time
c. a master finish surface is also needed
d. it is necessary to inspect whole surface together
Q. In the method of microscopic inspection what is the angle of beam light with the work?
a. 200
b. 300
c. 600
d. 900
Q. Which of the following is true for a method of measurement of surface finish with surface photographs?
a. different type of illumination is needed
b. no effect of type of illumination
c. same type of illumination is needed
d. monochromatic light is needed
Q. In case of vertical illumination in measuring surface finish with surface photographs, which will appear as bright area?
a. flat portion
b. scratch
c. irregularity
d. hills
Q. Which of the following method use pendulum in measuring the surface finish?
a. micro interferometer
b. wallace surface dynamometer
c. reflected light intensity method
d. microscopic inspection
Q. Which of the following is not true for the method of measurement of surface finish by micro interferometer?
a. optical flat is used
b. monochromatic source of light is used
c. depth of defect can’t be measured
d. interference lines plays an important role in identification of the defect
Q. Which of the following is the direct measure of surface finish in Wallace surface dynamometer?
a. time of swing
b. angle of swing
c. length of swing
d. height of swing