B sc hindi physics notes-driven harmonic oscillations_unit iv_chapter1_

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The document repeatedly lists "Unit-IV (Chapter-1)" followed by information about an education point in Kaladera and a contact name and phone number for Er. Harish Maheshwari.

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The document discusses the results of a study on the impact of COVID-19 lockdowns on air pollution. Researchers found that lockdowns led to significant short-term reductions in nitrogen dioxide and fine particulate matter pollution globally as transportation and industrial activities declined substantially. However, the document notes that the improvements in air quality were temporary and pollution levels rose back to pre-pandemic levels as restrictions eased and activity increased again.

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This document contains 10 multiple choice questions testing general science knowledge across several topics: 1. Which disease is not hereditary - the options given are Thalassemia, Color Blindness, Hemophilia, and Leukemia. 2. The main location of the bacterium Escherichia coli is listed as options for the human intestine, plants, legume root nodules, and rice paddies. 3. Options are given to match plant parts to specific plants - ginger and tuber, potato and rhizome, onion and bulb. 4. Statements about the spleen and lifespan of red blood cells are given as options for being correct or not. 5. Factors essential

Static electricity

HARISH KUMAR MAHESHWARI

The document discusses static electricity and how it is caused by an imbalance of electric charges within atoms. It explains that atoms are made up of protons, neutrons, and electrons, and static electricity occurs when rubbing causes electrons to be transferred between materials, leaving one material positively charged and one negatively charged. Examples of static electricity effects include balloons sticking to walls and hair standing up. Lightning is also discussed as a large-scale example of static electricity caused by charge separation in thunderclouds.

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HARISH KUMAR MAHESHWARI

Digital electronics notes

HARISH KUMAR MAHESHWARI

Magnetism solution

HARISH KUMAR MAHESHWARI

The document contains 30 multiple choice questions about magnetism and magnetic fields. Key points covered include: magnetic field has both magnitude and direction; the direction of magnetic field inside a magnet is from south to north pole; magnetic field lines are closed curves and field strength increases with closeness of lines; magnetic field decreases with distance from a straight conductor; Fleming's left hand rule gives the direction of force on a current carrying conductor in a magnetic field; an electric motor converts electrical to mechanical energy; electromagnetic induction is the basis of electric generators; the net magnetic field in a solenoid is the vector sum of fields from each turn; the SI unit for magnetic flux is the weber; a magnetic dipole is an arrangement of two poles

Electrochemical cell

HARISH KUMAR MAHESHWARI

Electrochemical cell solutions

HARISH KUMAR MAHESHWARI

The document contains 20 multiple choice questions about electrochemical cells. It asks about the equivalent EMF and internal resistance of series cell combinations, the definition of internal resistance, examples of electrochemical cells, the difference between galvanic and electrolytic cells, the role of inert electrodes and salt bridges, and the direction of current flow in galvanic cells and through the electrolyte.

Atomic and nuclear physics basics solution

HARISH KUMAR MAHESHWARI

3rd year vi sem ms lab

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1. The document describes modeling a synchronous machine in MATLAB/Simulink. It provides details on the swing equation, synchronous machine model, parameter definitions, inputs and outputs. 2. Key steps include selecting the machine type and parameters, specifying initial conditions, and inputs like mechanical power or rotor speed and field voltage. 3. The output is a vector containing signals like currents, fluxes, voltages, rotor speed and electrical power that characterize the synchronous machine's dynamic behavior.

2th year iv sem de lab manual

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This document provides information about a digital electronics lab manual. It outlines 10 experiments to be performed, including verifying the truth tables of basic logic gates like AND, OR, NAND, and NOR gates. It also describes experiments with half adders, full adders, multiplexers, decoders, flip-flops, and counters. The document provides background information on breadboards and building circuits. It explains the functionality of logic gates like AND, OR, NOT, NAND and NOR gates.

2nd year iv sem emi lab manual

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1) The document is a lab manual for an Electrical Engineering measurement lab course. It details 10 experiments involving measuring devices like oscilloscopes, multimeters, and bridges. 2) The first experiment involves studying oscilloscopes, their working principles, and different types of probes. Block diagrams and features of oscilloscopes are described. 3) Power factor is defined as the ratio between real power and apparent power. A power factor meter and phase shifter circuit are explained along with calculations for power factor correction by adding a capacitor.

Electronic basic

HARISH KUMAR MAHESHWARI

The document contains 30 multiple choice questions about electronics basics, including topics like p-n diodes, transistors, logic gates, semiconductors, and diodes. It tests understanding of concepts such as forward and reverse biasing of diodes, amplification factors of transistors, functions of different types of diodes and logic gates, and doping and charge carriers in semiconductors. The questions cover topics that are fundamental to the study of electronics.

Electricity

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Light and human eye

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Wound healing PPT

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This document provides an overview of wound healing, its functions, stages, mechanisms, factors affecting it, and complications. A wound is a break in the integrity of the skin or tissues, which may be associated with disruption of the structure and function. Healing is the body’s response to injury in an attempt to restore normal structure and functions. Healing can occur in two ways: Regeneration and Repair There are 4 phases of wound healing: hemostasis, inflammation, proliferation, and remodeling. This document also describes the mechanism of wound healing. Factors that affect healing include infection, uncontrolled diabetes, poor nutrition, age, anemia, the presence of foreign bodies, etc. Complications of wound healing like infection, hyperpigmentation of scar, contractures, and keloid formation.

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