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Discover the game-changing potential of room temperature superconductivity – a revolution in the world of materials science. Introduction In the realm of materials science, room temperature superconductivity has long been considered the Holy Grail. The ability to conduct electricity without any resistance at room temperature could potentially revolutionize various industries, from transportation and energy to … Read more
Unraveling the Mysteries of Dark Matter: The Quest for Understanding the Invisible Universe Introduction: Dark matter, an elusive and enigmatic substance, comprises a significant portion of our universe’s mass. Despite its pervasive influence, it remains shrouded in mystery, challenging scientists to uncover its nature and properties. This article dives into the captivating realm of dark … Read more
Beam A beam is a bar on rod of uniform rectangular or circular cross – section of a homogeneous isotropic elastic material having length much greater than its crossа -sectional area. Internal bending moment A beam can be divided up into a number of straight parallel filaments having same lengths. When external torque is … Read more
Show that Strain energy line due to bending of the beam Solution – Let, due to bending the filament of length dl at a distance z from the neutral layer is extended by x work done necessary in Stretching the filament is stored up in the filament as a potential energy. Work done in stretching … Read more
Relation among elastic constants : ( Y, σ, k, n, x) Young’s modulus, bulk modulus and Rigidity modulus of an elastic solid are all together are known as elastic constants. When a deforming force is acting on a solid continuously, it results in the change in its original dimension. In such cases, we can use … Read more
ELASTICITY Elasticity :- The property by virtue of which a body undergoes a change in size, shape or both due to application of external forces, tend to region its original size and shape when the external forces are withdrawn, is called elasticity. Perfectly elastic body :- Bodies which can regain completely their original conditions or … Read more
What is hybrid parameter? Hybrid parameters (also known as h parameters) are known as ‘hybrid’ parameters as they use Z parameters, Y parameters, voltage ratio, and current ratios to represent the relationship between voltage and current in a two port network. Hybrid parameter or h parameter – Every linear two port circuit having input and output … Read more
Transistor Biasing Transistor biasing Biasing of a transistor means the establishment of the Q- point by connecting the transistor to external voltage sources via appropriate circuit. Factors for which the Q- point may shift- Q-point of a transistor may shift due to the following factors : i) due to change in temperature ii) due … Read more
Load line , Operating point and Transistor biasing Load line In graphical analysis , a load line is a line drawn on the characteristic curve, a graph of the current vs the voltage in a nonlinear device such as a diode or a transistor. It describes the constraint implied on the voltage and current in … Read more
TRANSISTOR What is transistor ? Transistor – A transistor consists of an any type of semiconductor (let p-type) in which a layer of other type semiconductor (let n-type) 25 sandwiched between them. Thus transistor is a three terminal semiconductor device, where the terminals are called – i) emitter (E) ii) base (B) iii) Collector (C) … Read more