MANUFACTURING AND PRODUCTION TECHNOLOGY QUIZ

Fixtures are used

None of these

To check the accuracy of workpiece

For holding and guiding the tool in drilling, reaming or tapping operations

For holding the work in milling, grinding, planing or turning operations

TRUE ANSWER : ?
YOUR ANSWER : ?

What is the type of welding defect caused due to poor manipulation of weld rod or a dirty joint called?

Undercut

Under fill

Crack

Porosity

TRUE ANSWER : ?
YOUR ANSWER : ?

The cutting speed is maximum while machining _________ with a high speed steel tool.

Cast iron

Brass

Mild steel

Aluminium

TRUE ANSWER : ?
YOUR ANSWER : ?

Chip breakers are used to

Increase tool life

To minimize heat generation

Break the chips into short segments

Remove chips from bed

TRUE ANSWER : ?
YOUR ANSWER : ?

In an interchangeable assembly, shafts of size 25.000 -0.010⁺⁰∙⁰⁴⁰ mm mate with holes of size 25.000 -0.020⁺⁰∙⁰³⁰, the maximum interference (in microns) in the assembly is

10

20

30

40

TRUE ANSWER : ?
YOUR ANSWER : ?

The operation in which oil is permeated into the pores of a powder metallurgy product is known as

Infiltration

Mixing

Sintering

Impregnation

TRUE ANSWER : ?
YOUR ANSWER : ?

Ultrasonic machining is best suited for

Tool steels

Glass

All of these

Sintered carbides

TRUE ANSWER : ?
YOUR ANSWER : ?

A shaft has a dimension, φ9 +0.025⁺⁰∙⁰⁰⁹, the respective values of fundamental deviation and tolerance are

−0.025, ±0.008

−0.025, 0.016

−0.009, ± 0.008

−0.009, 0.016

TRUE ANSWER : ?
YOUR ANSWER : ?

When 3-2-1 principle is used to support and locate a three dimensional work-piece during machining, the number of degrees of freedom that are restricted is

9

10

8

7

TRUE ANSWER : ?
YOUR ANSWER : ?

In order to grind soft material

Coarse grained grinding wheel is used

Medium grained grinding wheel is used

Any one of these

Fine grained grinding wheel is used

TRUE ANSWER : ?
YOUR ANSWER : ?