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These are resistors with long term stability and close tolerances. These are used in measuring instruments. Wire wound resistors, produced with long term stabilities and with special techniques used to reduce inductive and capacitive effects are precision resistors. The wire used is of Cu-Ni or Ni-Cr alloy, with enamel coating or silk covered with vacuum impregnated varnish. End connecting wires are copper leads, with silver soldered to ends. Small bobbin is used to wind wire. It is covered with ceramic sieving. Due, to winding, these resistors have inductive effect. To reduce it, bifilar winding is used. The wire is bent back on itself at mid point, so that two halves are side by side separated by insulation only. If this loop has multiple layers, then the distributed capacitance is large. It is reduced by winding each bifilar loop on a separate section and connecting such sections in series.
Briefly explain Brewster's law? Show that at the polarizing angle of incidence the reflected and transmitted light becomes perpendicular to each other.
characteristics of schottky diode
In two-dimension motion a body go in a plane. e.g. a particle rolling in a circle, a cricket ball caught by a fielder. In the first case the body can go round with a fix velocity o
Core type Transformers: in this type of transformer the windings enclose the core (fig .given below). Both the windings are separated and half of every winding is placed on ever
what are coherent waves
Define Poisson Distribution in Ideal Gas? Consider a monatomic ideal gas of total Ñ molecules in a volume V ˜ Show that the probability, P N for the number N of mole
On transitory from a medium with one index of refraction to a medium with a different index of refraction light is typically both reflected and refracted. Under some conditions how
why an electron can''t exist in the nucleus .
a) For the 30days beginning July 15 find a list of moon rise times for Australia, Brisbane. From these data make a table and calculate the period of the moon in its orbit arou
working model
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