Engineering Metrology MCQs

Question 1

Pick out the wrong statement about measuring out-of-roundness by V-block gauging.

Accepted Answer

With a V-block, ovality and other even-numbered lobing are magnified.

Answer

60 degree V-block provides triple magnification of out-of-round characteristics of 3 lobed part.

Answer

For checking a five lobed part, 108? V is required

Answer

The use of a series of V blocks would not necessarily detect all types of outof-roundness.

Question 2

A master gauge is

Accepted Answer

A standard gauge for checking accuracy of gauges used on shop floors

Answer

A new gauge

Answer

An international reference standard

Answer

A gauge used by experienced technicians

Question 3

Gear tooth vernier is used to measure

Accepted Answer

Pitch line thickness of gear tooth

Answer

Gear tooth profile

Answer

Gear tooth thickness

Answer

Module

Question 4

Moire fringes are observed when

Accepted Answer

Index grating is moved over scale grating

Answer

An optical flat is placed over smooth surface

Answer

A microscope is used to observe surface texture

Answer

White light is diffused through _ a prism

Question 5

The surface roughness on a drawing is represented by

Accepted Answer

Triangles

Answer

Circles

Answer

Squares

Answer

Zig-zag lines

Question 6

Inside and outside diameters of a thin tube are to be measured. Only one of the following tools is to be selected. Which one would you choose.

Accepted Answer

Vernier caliper.

Answer

Inside caliper

Answer

Trammel

Answer

Odd-leg caliper

Question 7

Electronic level contains

Accepted Answer

A pendulum

Answer

Spirit level (c)

Answer

Micrometer (d) clinometer

Answer

(e) sine bar.

Question 8

Keilpart gauge is used to measure

Accepted Answer

Inside diameter Of a tool

Answer

Surface roughness

Answer

Taper

Answer

Gear eccentricity

Question 9

In interferometric methods, the path difference between one bright band and the next is varied by

Accepted Answer

Two half wave lengths

Answer

Half wave length

Answer

One quarter wavelength

Answer

Two wavelengths