Experiment to produce induced EMF and Current

Description: Consider a straight piece of wire of length in magnetic field of a permanent magnet . The wire is connected with a sensitive   galvanometer. so it forms a closed loop without battery. Induced Current: When we move the loop from left to right a current flow in the loop . The current stops when the loop stops to move. Now, if we move loop in opposite in direction current also in the reverse direction. Induced Emf: If we change...

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In the Street of the Fruit Stalls

Description: In the Street of the Fruit Stalls Wicks balance flame, a dark dew falls  In the street of the fruit stalls . Melon, guava, mandarin, Pyramid-piled like cannon balls Glow red-hot, gold-hot, from within. Dark children with a coin to spend  Enter the lantern's orbit; find Melon, guava, mandarin- The moon compacted to a rind, The sun in a pitted skin. They take it, break it open, let A gold or silver fountain wet  Mouth,...

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CHINA OF WAY TO PROGRESS

Description: For twenty-two years China lay forgotten and was even confused with a small island one of its provinces and the flexile Chines countered by a Western curtain of rigid disregard. Then suddenly that one-fourth of , mankind enclosed in the world's third largest country was brought out of the memory 8nt attic, with a loud bang The Chinese may have introduced the smile policy, but the Occidentals certainly launched the warm hug. The crowd...

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Petrol Engine and diesel engine

Description: Although different engines may differ in their construct technology but they are based on the principle of a Can cycle. A typical four stroke petrol engine   also undergoes four successive processes in each cycle. 1. The cycle starts on the intake stroke in which piston.  2. On the compression stroke, the inlet valve is closed and he mixture is compressed adiabatically by inwa 3. On the power stroke, a spark fires the...

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Resonance

Description: RESONANCE is a motion of a driven harmonic oscillator external driving force is periodic with a 7.8 striking phenomenon, known as resona e is a very arises if the phenomeno drivi period comparable to t amplitude of the imparable to the natural period of the oscillator uation, the driving force may be feeble, motion may become extra ordinarily e case of oscillating simple pendulum, if ma y become extra ordination In rg sh the pendulum...

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Different Networks Models

Description: two models of computer networks. These are as follows: There are . 1) Client-Server Model . 2) Peer-to-Peer Model etc. 1. Client-Server Model/Dedicated Server Network: In client-server model, one or more computers work as servers and other computers easily. work as clients. The server computer controls the whole network. It is used to store data and programs to be shared among different computers in the network. It may also share...

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Data Communication

Description: Data communication is a process of transferring data electronically from one place to another. Data can be transferred by using different medium. The basic components of data communication are as follows: 1) .Message .  2)Sender . 3)Receiver . 4) Transmission Medium 5) Encoder and Decoder 1) Figure: Data Communication 1)  Message: The message is the data or information to be communicated. It may consist...

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Leisure

Description: What is this life if, full of care We have no time to stand and stare?  No time to stand beneath the boughs And stare as long as sheep or cows:  No time to see, in broad daylight,  Streams full of stars, like skies at night: No time to turn at Beauty's glance, And watch her feet, how they can dance No time to wait till her mouth can  Enrich that smile, her eyes began?  A poor life this if,full of care. We...

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A Sindhi Woman

Description:  Bare foot, through the bazaar,  And with the same undulant grace  As the cloth blown back from her face,  She glides with a stone jar  High on her head And not a ripple in her tread.  Watching her cross erect Stones, garbage, excrement and crumbs  Of glass in the Karachi slums,  I, with my stoop, reflect  They stand most straight  Who learn to walk beneath a weight.   Theme: This...

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First Year at Harrow

Description: I had scarcely passed my twelfth birthday when I entered the inhospitable regions of examinations, through which for the next seven years I was destined to journey. These examinations were a great trial to me. The subjects which were dearest to the examiners were almost invariably those I fancied least. I would have liked to have been examined in history, poetry and writing essays. The examiners, on the other hand, were partial to...

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Different components of a network

DESCRIPTION: Different component of a network are..... 1).Communication Media: Communication media is used to transfer data from one computer to another computer Low cost LAN  are connected with twisted wire pair Many LAN use coaxial or fiber-optic cables These cables are expensive but provide faster communication Some LAN use wireless transmission media. It uses infrared or radio waves to connect computers Wireless networks are easy...

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NUCLEAR REACTOR

Description: It is a device in which nuclear fission chain reaction takes place at a constant rate in a controlled manner. It is  used to produce nuclear energy for industrial and other useful purposes. principle: Controlled Fission chain Reaction is the principle of a nuclear reactor. Explanation:  The role of reactor in a nuclear power station is the same as that of a furnace in a thermal power station.  Heat energy ...

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RADIOACTIVITY

                                  Description: The elements having charge number z greater than 82 are unstable. They emit invisible radiation which effect the photographic plate. Such element  are called radioactive elements and the process is called Radioactivity. The radiations emitted by radioactive elements are of three types named as alpha Beta and...

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