heat loss coefficients

(i) Copper loss is the energy lost due to heating of copper coils of transformers. (ii) Iron loss due formation of induced current in the iron line resulting in lot of heat. (iii) Leakage of magnetic flux. All flux linked with primary may not be linked with ..

The specific heat of a substance is the amount of heat required to increase the temperature of a unit mass of it through a unit temperature. Its units in cgs system are cal g -1 o C -1 . In mks system, it is measured in kilocal kg - 1 o C - 1 . The SI unit is J kg - 1 K - 1 . Th..

This heating is inevitable in any electrical circuit. Since the energy lost by the flowing charges ends up as disorderly thermal motion, the phrase 'ohmic dissipation' is also used to describe it. Often, this is an undesirable effect. For example, in electric circuits, the heat ..

Let a battery maintain a steady current I through the circuit, and a potential difference V between the two ends 'a' and 'b' of the resistor. Let D t be the time taken by the charge to flow from a to b, and D q the amount of charge crossing point a in time D t. Then The loss in electrical..

>The amount of heat generated in a conductor of resistance 'R', when current 'I' flows through it in a given time 't', is given by I 2 Rt. Electric power is said to be one watt if a potential difference of one volt causes a current of one ampere to flow through a conductor. The magnetic f..

A solar heating device is one which allows collection of a large amount of heat from the sunlight in a given region and restricts the loss of heat to the surrounding in the form of radiatio..

Calculate the percentage loss of mass when sodium carbonate crystals are strongly heated (Na=23, C=12, O=16, H=..

Sometimes, even if the error is known, it cannot be corrected due to imperfection in the experimental arrangement. e.g., Loss of heat due to radiation in calorimetry. These errors always exist, but observations can be correcte..

Solar Cooker - A solar heating device is one which allows collection of a large amount of heat from the sunlight in a given region and restrict the loss of heat to the surrounding in the form of radiatio..

Expansion in area of a Laminar surface due to heating is known as superficial expansion. Let a 1 = area of a surface t 1 = its initial temperature a 2 = area of the surface after heating t 2 = final temperature The coefficient of superficial expansion is defined as the..