The action of JFET in its equivalent circuit can best be represented as a

A. Current controlled Current source

B. Current controlled voltage source

C. Voltage controlled voltage source

D. voltage controlled current source

Answer: Option D

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What is two transistor model of scr ? Explain SCR

Power electronics Two Transistor Model of SCR full explain and pdf. Basic operating principle of SCR, can easily be understood by the two transistor model of SCR , as it is a combination of p and n layers. This is a pnpn thyristor. If we bisect it through the dotted line then we will get two transistors i.e. one pnp transistor with J 1 and J 2 junctions and another is with J 2 and J 3 junctions as shown in figure below. The relation between the collector current and emitter current is shown below Here, I C is collector current, I E is emitter current, I CBO is forward leakage current, α is common base forward current gain and relationship between I C and I B is Where, I B is base current and β is common emitter forward current gain. Let’s for transistor T 1 this relation holds And that for transistor T 2 Now, by the analysis of two transistors model we can get anode current, From equation (i) and (ii), we get, If applied gate current is I g then cathode current will b...

If K is the transformation ratio, then the secondary phase voltage of delta-delta connected three phase transformer will be

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Explain BISECTION METHOD (BOLZANO METHOD). Engineering maths The method is applicable for numerically solving the equation f ( x ) = 0 for the real variable x , where f is a continuous function defined on an interval [ a , b ] and where f ( a ) and f ( b ) have opposite signs. In this case a and b are said to bracket a root since, by the intermediate value theorem , the continuous function f must have at least one root in the interval ( a , b ). At each step the method divides the interval in two by computing the midpoint c = ( a + b ) / 2 of the interval and the value of the function f ( c ) at that point. Unless c is itself a root (which is very unlikely, but possible) there are now only two possibilities: either f ( a ) and f ( c ) have opposite signs and bracket a root, or f ( c ) and f ( b...

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