Engineering Chemistry 1 min read
VARNISHES
Varnish is the solution of resins or resinous substances like amber, copal, shellac, gum resin etc. in solvents like oil, turpentile,…
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Engineering Chemistry 1 min read
DISTEMPERS
Distempers are the cheaper variety of paints in which chalk is used as base and water is used as a carrier.The emulsifying…
Engineering Chemistry 3 min read
Properties of an Ideal Paint
1. It should be possible to apply easily and freely. 2. It should dry in reasonable time. 3. It should…
Mechanics of Marine Machines 3 min read
Gravity control
In gravity control – gravity controlled instruments, as shown. A small adjustable weight is attached to the spindle of the…
Engineering Chemistry 2 min read
PAINTS
Paints are applied on the surfaces of timber, metals and plastered surfaces as a protective layer and at the same…
Engineering Chemistry 1 min read
Uses of Cement
Cement is used widely for the construction of various structures. Some of them are listed below: (i) Cement slurry is…
Engineering Chemistry 5 min read
Physical Tests on Cement
(a) Soundness Test: It is conducted by sieve analysis. 100 gms of cement is taken and sieved through IS sieve No. 9…
Engineering Chemistry 2 min read
Properties of Ordinary Portland Cement
(i) Chemical properties: Portland cement consists of the following chemical compounds: (a) Tricalcium silicate 3 CaO.SiO2 (C3S) 40% (b) Dicalcium silicate 2CaO.SiO2 (C2S) 30%…
Mechanics of Marine Machines 3 min read
Comparison between Involute and Cycloidal Gear Tooth Profiles
Involute tooth profile is almost used generally everywhere and given preference over cycloidal tooth profile or any other gear tooth form. This doesn’t…
Mechanics of Marine Machines 2 min read
Internal Gears
Internal gear is a gear with its teeth cut in the internal surface of a cylinder and meshes with spur…
Mechanics of Marine Machines 4 min read
CONTACT RATIO
To assure continuous smooth tooth action, as one pair of teeth ceases action a succeeding pair of teeth must already…
Effective Thermal Insulation 15 min read
A New Method for Numerical Modeling of Heat Transfer in Thermal Insulations Products
Mineral fiber products are the most common group of thermal insulations currently in use. Heat transfer in these materials has…
