Ball bearings are, usually, made from Low carbon steel High carbon steel Chrome steel Medium carbon steel TRUE ANSWER : ? YOUR ANSWER : ?
The unit cells All of these May be defined as the smallest parallelepiped which could be transposed in three coordinate directions to build up the space lattice Have the same orientation and their similar faces are parallel Contain the smallest number of atoms which when taken together have all the properties of the crystals of the particular metal TRUE ANSWER : ? YOUR ANSWER : ?
Nodular cast iron is produced by adding ________ to the molten cast iron. Nickel Copper Magnesium Chromium TRUE ANSWER : ? YOUR ANSWER : ?
When steel containing less than 0.8% carbon is cooled slowly from temperatures above or within the critical range, it consists of Mainly ferrite Mainly pearlite Ferrite and pearlite Pearlite and cementite TRUE ANSWER : ? YOUR ANSWER : ?
Phosphor bronze contains None of these 2.5% phosphorous 1% phosphorous 0.5% of phosphorous TRUE ANSWER : ? YOUR ANSWER : ?
The property of a material which enables it to retain the deformation permanently, is called Plasticity Malleability Brittleness Ductility TRUE ANSWER : ? YOUR ANSWER : ?
The ability of a material to resist softening at high temperature is known as Fatigue Hot hardness Creep Hot tempering TRUE ANSWER : ? YOUR ANSWER : ?
Body centered cubic space lattice is found in Alpha iron, tungsten, chromium and molybdenum Zinc, magnesium, cobalt, cadmium, antimony and bismuth None of these Gamma iron, aluminium, copper, lead, silver and nickel TRUE ANSWER : ? YOUR ANSWER : ?
Cyaniding is the process of Obtaining cyanide salts Dipping steel in cyanide bath Reacting steel surface with cyanide salts Adding carbon and nitrogen by heat treatment of steel to increase its surface hardness TRUE ANSWER : ? YOUR ANSWER : ?
Nickel when added to copper improves Hardness and strength Machinability Hardness Strength and ductility TRUE ANSWER : ? YOUR ANSWER : ?