Zener Diode

Zener Diode

Zener Diode A diode is a fundamental electronic component that allows the flow of electricity in one direction. A diode has low resistance to the flow of current in one direction and a very high resistance in the other. The diode most commonly used is the semiconductor diodes. What is a Zener Diode? Zener diode is Read more about Zener Diode[…]

Maths 1

Applications of Permutation and Combination

Applications of Permutation and Combination Functional Applications (i) The number of all permutations (arrangements) of n different objects taken r at a time, When a particular object is to be always included in each arrangement is n-1Cr-1 x r! When a particular object is never taken in each arrangement is n-1Cr x r! (ii) If Read more about Applications of Permutation and Combination[…]

Maths 1

Applications of De-Moivre’s Theorem

De-Moivre’s Theorem: A simple formula for calculating powers of complex numbers in the form of cosθ and sinθ is known as de-Moivre’s theorem. If n is a rational number, then (cosθ + sinθ)ⁿ = cos nθ + i sin nθ. Applications of De-Moivre’s Theorem: If z = (cosθ₁ + i sinθ₁) (cosθ₂ + i sinθ₂) … Read more about Applications of De-Moivre’s Theorem[…]

Physics

Electrical Insulators

Electrical Insulators Electrical Insulator must be used in electrical system to prevent unwanted flow of current to the earth from its supporting points. The insulator plays a vital role in electrical system. Electrical Insulator is a very high resistive path through which practically no current can flow. Electrical insulators are different from electrical conductors. Electrical conductors are those materials which propagate the ease of Read more about Electrical Insulators[…]

Maths 1

Variance and Standard Deviation of Ungrouped Data

Variance and Standard Deviation of Ungrouped Data Formulas: The variance is . Then ‘σ’ the standard deviation is given by the positive square root of the variance . Calculation of Variance and Standard Deviation for an Ungrouped Data 1. Find the variance and standard deviation of following data 5, 12, 3, 18, 6, 8, 2, Read more about Variance and Standard Deviation of Ungrouped Data[…]