Author Archive
What is Potential energy (with example)
Energy is the capacity to do work. Energy is a scalar quantity. Unit of measurement of energy is Jole, same as that of work. Potential energy: The energy possessed by a body due to its position is
Laws of Friction
Coulomb in 1781 conducted several experiment on t he friction of plane on dry surface. On the basis of his experiments he stated some laws of friction which as follows – Law of static friction Law of
Why holes are not generated in metals
Vacancy of electron created in the valance band of solid due to the upward transition of electron is called hole. In case of semiconductor valance and conduction bands are separated by a gap and hence electron can
Force of friction and their types
Friction is the property of two surfaces is contact by virtue of which each surface resists the relative motion of the other surface. Thus when a body moves or tends to move tangentially with respect to the
Losses in steam turbines
What are the steam turbines losses? Frictional loss in nozzle Sudden expansion loss Frictional loss in bearing Frictional loss in moving blade Steam level with same K.E. called as carry over losses Frictional loss in fixed blade
Classification of machine design
There are mainly three classification of machine design which as under: Adoptive Design Development Design New Design Adoptive Design In this design the work on existing product with adopt of existing design. These types of design need
Advantages and disadvantages of cold lime soda process
Cold lime soda process, when hard water is treated with calculated amount of lime [Ca(OH)2] and soda ash (Na2CO3) at room temperature 25ºC, the soluble Ca and Mg salt present in hard water are chemically converted into
What is LED light?
LED lights are the latest technology in energy efficient lighting. LED stands for ‘Light Emitting Diode’, a semiconductor device that converts electricity into light. LED lights are super energy efficient, using approximately 85% less energy than halogen
Uttar Pradesh Polytechnic Colleges List
Agra Balwant Rural Engineering Institute, Bichpuri, Agra, Uttar Pradesh C.V.S College of Polytechnic, Agra Dev Institute of Technical Education, Agra Dr. B.R. Ambedkar Polytechnic Prembagh, Gwaliar Road, Agra Gaytri College of Engineering and Technology, Agra Government Leather
Tubelight circuit connection with diagram
A choke is connected in one end of the tube light and a starter is in series with the circuit. When supply is provided ,the starter will interrupt the supply cycle of AC. Due to the sudden