Laplace Transform
In Fourier transform, one problem we faced that Fourier transform is not applicable for signals that are not absolutely integrable.
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Euler Theory for Buckling Failure
The Swiss Mathematician Leonhard Euler in 1757 derived a formula for stability of long column. According to Euler’s theory, long
Read MoreShear Stress Distribution in Circular Section
Solid circular shaft Hollow circular shaft Di = internal diameter Do = outer diameter Thin circular tube with mean radius
Read MoreTransformation Equations for Plane Strain
Principal Strains These are strains on planes on which shear strains vanishes and values of shear strains are maximum and
Read MoreHooke Law for Plane Stress
Consider a plane stress element is shown in figure. In this stress element σz = 0 σyz = 0 τxz
Read MoreBeam of Uniform Strength
For an economical design, the section of the beam may be reduced towards the support, as bending moment decreases towards
Read MoreWhat is a Composite Beam in Strength of Materials?
A beam that is built from more than one material is known as composite beams. Example are bimetallic beams, flitched
Read MorePRINCIPAL STRESSES AND MAXIMUM SHEAR STRESS
(a) Principal Stress Consider a planar stress element subjected to normal and shear stress as shown below. Normal stress and
Read MoreAmplifier Frequency Response
In general, an amplifier gain factor versus frequency will resemble as shown in Figure (a). Both gain factor and frequency
Read MoreVoltage Follower – Analog Circuits
An interesting property of non-inverting op-amp occurs when R1 = ∞, an open circuit. The closed loop gain is independent
Read MoreSimple Bending or Pure Bending
Consider a simply supported beam AB of length L subjected to moment M0 at its ends as shown in figures.
Read MoreShear Force and Bending Moment Diagram
Shear force and bending moment diagrams represent variation of shear force and bending moment along the beam. Shear force diagrams
Read MoreWhat is BMD in Strength of Materials?
Following points should be kept in mind during construction of loading diagram from the corresponding bending moment diagram. If an
Read MoreWhat is Stress in Strength of Materials?
The fundamental concept of stress can be understood by considering a prismatic bar that is loaded by axial force P
Read MoreSmall Signal Model of BJT
It is the equivalent circuit of BJT and it is used in analysis of small signal model of BJT amplifiers.
Read MoreBipolar Junction Transistors-Characteristics and Biasing
Bipolar Junction Transistors Three-terminal devices are far more useful than two-terminal ones, such as diodes studied earlier in chatper-1, because
Read MoreDiode Equivalent Circuits
A diode has 2 types of equivalent circuit Small signal model Large signal model Small Signal Model • If input
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