Metrology And Measurements Set 11 MCQs

Q1 | What is the tolerance of the straightness of a line?

maximum deviation from the straight line joining two extremities

maximum deviation from the middle point of straight line joining two extremities

minimum deviation from the straight line joining two extremities

minimum deviation from the middle point of straight line joining two extremities

Q2 | 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?

gap between 0.12 to 0.17 mm

gap between 0.2 to 0.7 mm

gap between 1.7 to 2 mm

gap between 0.0012 to 0.0017 mm

Q3 | What is the name of a pair of straight edges?

drum sticks

lower pair

winding sticks

self closed pair

Q4 | What is the position of straightness interferometer in straightness measurement optics?

before laser head

after straightness reflector

between laser head and straightness reflector

no need of interferometer

Q5 | What is the range of straightness measurement in straightness measurement optics?

±2.5 mm

±5 mm

±10 mm

±20 mm

Q6 | Which of the following is not the factor affecting the accuracy of straightness measurement by optics?

air turbulence

optics fixed rigidly

slope error

localised heat sources

Q7 | At which part of the precision straight edge is generally lapped?

edges only

base only

base and edges both

all over the surface

Q8 | What type of thread is formed on female screw gauge?

external thread

internal thread

both internal and external

major screw thread

Q9 | Which of the following option is true for truncation?

thread can be tranculated at crest only

thread can be tranculatd at root only

thread can be tranculated at crest and root both

thread can’t be tranculated at crest and root both

Q10 | What is dedendum for external threads?

radial distance between pitch and minor cylinder

radial distance between major and pitch cylinder

radial distance between major and minor cylinder

axial distance between major and pitch cylinder

Q11 | Which of the following is not a name of the major diameter of an external thread?

outside diameter

crest diameter

full diameter

cone diameter

Q12 | Which of the following is not true about the axial thickness of screw thread?

measured in direction perpendicular to the axis of thread

measured on pitch cylinder

distance between opposite faces of same thread

measured at the same thread

Q13 | What is the alternative name of functional diameter?

cone diameter

virtual diameter

root diameter

inside diameter

Q14 | 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

Q15 | 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

Q16 | 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

Q17 | Flanks of the threads connect the crest with the roots.

true

false

Q18 | 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

Q19 | 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

Q20 | 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

Q21 | Which of the following element is not determined by analytical inspection?

profile

composite vibrations

spacing

pitch

Q22 | Which of the following is not determined by the functional type of inspection?

lead

noise level

variation in action

vibration

Q23 | 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

Q24 | Which of the following machine is used for rolling tests?

parkson gear tester

tooth caliper

base pitch measuring instrument

involute profile testing machine

Q25 | If reference circle of gear is eccentric then which error is reflected by this eccentricity?

cyclic error

periodic error

pitch error

undulation