Objective Questions – Metals and Alloys
Pick out the most appropriate option:
Answers are marked bold ;
1. Mild steel is an alloy of iron and carbon with percentage of carbon ranging...
Alloys of Nickel
ALLOYS OF NICKEL
(i) German silver. It is a cupro nickel to which zinc has been added. A typical composition is 60% copper, 30% nickel...
Non Ferrous Metals and Alloys
Non Ferrous Metals and Alloys - Properties and Uses :
Non-ferrous metals and alloys do not contain any significant quantity of iron. The most common...
Bronze and its types
Bronze ;
Bronze is an alloy of copper and tin however commercial bronzes may contain other elements besides tin. In fact, alloys of copper with...
Advantages of NC/CNC Machines
CNC Machines have these advantages :
High Repeatability and Precision e.g. Aircraft parts.
Volume of production in CNC is very high
Complex contours/surfaces need...
Diff B/w NC and CNC M/c
NC - Numeric Controlled and CNC - Computer Numeric Controlled Machines differ in these ways :
The difference between NC and CNC is one...
Couplings
Couplings:
Shaft couplings are used for connecting two shafts end for transmitting rotary motion directly from one shaft to another. They act as a one...
Engineering Drawing
What is Engineering Drawing ?
Engineering Drawing is a language to express details of any particular machine part, tool, process of working or assembling and...
Lathe Machine Parts
The main parts of a Lathe Machine are :
- Headstock
- Tailstock
- Carriage
- Cross-slide
- Compound slide
- Bed
- Quick change gearbox
- Legs
- Feed shaft
- Lead screw
The...
Trignometric Ratios
These are most commonly used trigonometric ratios ;
Also, these relations need to be remembered,
sin (90° – A) = cos A, cos (90°...
- Advertisement -
