Polytechnic Hub - Page 81 of 92 - for Electronics, Electrical, Mechanical, Automobile & Textiles

Quantum Electronics

Dr. S. S. VERMA; Department of Physics, S.L.I.E.T., Longowal; Distt.- Sangrur (Punjab)-148 106 Quantum electronics is a term that was used mainly between the 1950s and 1970s to denote the…

Ravi Barwad April 26, 2015

Electrical Articles

Improve quality assurance of electrical insulation in the factory

The latest partial discharge measurement techniques, explored in a CWIEME Berlin seminar, improve quality assurance of electrical insulation in the factory and prevent unnecessary costly repairs or outages in the…

Ravi Barwad April 20, 2015

Electronics Articles

How to Test Instruments in your Lab

Learn here how to use some common test instruments in your research laboratory. The common type of instruments we are using in our lab are oscilloscope, digital multimeter, frequency counter, function…

Ravi Barwad March 19, 2015

Automobile Articles

Gasohol and Diesohol

Gasohol Diesohol Gasohol is a liquid fuel containing 90% petrol and 10% ethanol. Diesohol is liquid fuel containing 84.5% diesel oil, 15% hydrated ethanol and 0.5% emulsifier. Its octane number…

Ravi Barwad March 7, 2015

Electrical Articles

Conventional vs Non-conventional energy source

Conventional energy source Non-conventional energy source These are conveniently used everywhere for many purpose. These are not convenient to use everywhere due to some problems. These may be non-renewable sources.…

Ravi Barwad March 7, 2015

Cement-Ceramic

Cement hydration process

Introduction Portland cement is a hydraulic cement, hence it derives its strength from chemical reactions between the cement and water. The process is known as hydration. Cement consists of the…

Technical Editor March 6, 2015

Cement-Ceramic

Constitutional compounds of portland cement

The properties of cement depend upon the relative proportion of the constitutional compounds present and each of them has different characteristics. When cement comes in contact with water, its constitutional…

Technical Editor March 6, 2015

Automobile Articles

Properties and advantages of Biodiesel

Properties of biodiesel It is free from S and aromatic compounds. It is biodegradable and it is nontoxic. Its cetane number ranges from 45 to 63 depending on the type…

Nikhil Umredkar March 5, 2015

Automobile Articles Mechanical Articles

Role of inhibitors in petrol and diesel oil

Following are the role of inhibitors in petrol as well as diesel oil - When gasoline or diesel oil is stored for long time in storage tank, it may undergo…

Nikhil Umredkar March 5, 2015

Automobile Articles Mechanical Articles

Difference between petrol and diesel oil

Following are the differences between petrol and diesel: Petrol Diesel oil Knocking in petrol engine is due to the sudden spontaneous combustion of petrol before sparking of spark plug. Knocking…

Nikhil Umredkar March 5, 2015