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This set of Metrology and Measurements Multiple Choice Questions & Answers (MCQs) focuses on Metrology And Measurements Set 5
Q1 | What is a thread per inch in screw thread?
- pitch in inches
- axial distance moved by threaded part
- reciprocal of pitch in inches
- radial distance moved by threaded part
Q2 | Which of the following is not true about effective diameter?
- also known as pitch diameter
- it decides quality of fit between nut and screw
- this is the diameter of minor cylinder
- it is a very important dimension for screw threads
Q3 | Which of the following is true for the multiple start screw threads?
- it is produced by a single helical groove
- grooves should be different in spacing
- it gives a quick transverse
- it is formed in a transverse section on a cylinder
Q4 | Statement 1: Flank angle of symmetrical thread is known as thread’s half-angle. Statement 2: It is measured parallel to the axis of a thread.
- t, f
- f, f
- t, t
- f, t
Q5 | Flanks of the threads connect the crest with the roots.
- true
- false
Q6 | What is the effect of improper alignment of each tooth?
- tooth thickness increases
- face width decreases
- load will not distributed evenly
- pitch of teeth reduced
Q7 | Which of the following is not true about concentricity of teeth?
- fluctuating velocity will be noticed when not concentric
- can be checked by using projector
- inaccuracy of parts when not concentric
- should be tested to ensure the proper heat treatment
Q8 | Which of the following option is true about an analytical method of inspection of gears?
- analytical method is widely used for industries
- this method is fast
- all individual elements of gear teeth are checked
- more accurate
Q9 | Which of the following element is not determined by analytical inspection?
- profile
- composite vibrations
- spacing
- pitch
Q10 | Statement 2: Gear blank should be tested for dimensional accuracy.
- t, f
- f, f
- f, t
- t, t
Q11 | Which of the following is not determined by the functional type of inspection?
- lead
- noise level
- variation in action
- vibration
Q12 | Which of the following statement is true about inspection of gear?
- profile is determined by functional inspection
- backlash is determined by analytic inspection
- analytic test require running test of gear
- thickness of tooth is measured by functional inspection
Q13 | Which of the following machine is used for rolling tests?
- parkson gear tester
- tooth caliper
- base pitch measuring instrument
- involute profile testing machine
Q14 | If reference circle of gear is eccentric then which error is reflected by this eccentricity?
- cyclic error
- periodic error
- pitch error
- undulation
Q15 | Statement 2: Accuracy of individual elements is necessary for precision gears.
- t, f
- f, f
- t, t
- f, t
Q16 | Which of the following is the best for the examination of surface finish?
- touch inspection
- visual inspection
- scratch inspection
- microscopic inspection
Q17 | best method for examining the surface finish. Visual, touch and scratch inspection methods are not as accurate as microscopic. In these methods, minute flaws can’t be detected.
- 0.0001 mm
- 0.001 mm
- 0.01 mm
- 0.1 mm
Q18 | Which of the following material is not used for rubbing on the surface to be inspected in scratch inspection?
- softer material
- hard material
- plastic
- lead babbitt
Q19 | Statement 2: Direct instrument measurement is enabled to determine a numerical value of surface finish.
- f, t
- t, f
- f, f
- t, t
Q20 | What is the limitation of microscopic inspection to check surface finish?
- an average value is needed
- small portion of surface can be detected at a time
- a master finish surface is also needed
- it is necessary to inspect whole surface together
Q21 | In the method of microscopic inspection what is the angle of beam light with the work?
- 200
- 300
- 600
- 900
Q22 | Which of the following is true for a method of measurement of surface finish with surface photographs?
- different type of illumination is needed
- no effect of type of illumination
- same type of illumination is needed
- monochromatic light is needed
Q23 | In case of vertical illumination in measuring surface finish with surface photographs, which will appear as bright area?
- flat portion
- scratch
- irregularity
- hills
Q24 | Which of the following method use pendulum in measuring the surface finish?
- micro interferometer
- wallace surface dynamometer
- reflected light intensity method
- microscopic inspection
Q25 | Which of the following is not true for the method of measurement of surface finish by micro interferometer?
- optical flat is used
- monochromatic source of light is used
- depth of defect can’t be measured
- interference lines plays an important role in identification of the defect