SYNOPSIS
Helicopter is one of the earliest ideas for achieving flight. The advances in helicopter technology made it an extreme flying machine. In this seminar I discuss the historical backgrounds and early concepts of helicopter, then introducing the aerodynamic theory and principle behind helicopters, discussing the most potent mechanisms that are used in it. Also different configurations of helicopters have been described. Then discussing the first analytical theory to consider for a helicopter in for ....etc

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ABSTRACT
Electrodynamic (ED) tether is a long conducting wire extended from spacecraft. It has a strong potential for providing propellant less propulsion to spacecraft in low earth orbit. An electrodynamic Tether uses the same principle as electric motor in toys, appliances and computer disk drives. It works as a thruster, because a magnetic field exerts a force on a current carrying wire. The magnetic field is supplied by the earth. By properly controlled the forces generated by this electrodynamic tether can be used ....etc

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Introduction:-
Brakes are employed to stop or retard the motion of any moving boy. Thus, in automobiles the brakes are having the most important function to perform.
In conventional barking system the motion is retarded or stopped by absorbing kinetic energy by friction, by making the contact of the moving body with frictional rubber pad (called brake liner) which causes the absorption of kinetic energy, and this is wasted in form of heat in surroundings. Each time we brake, the momentum of vehicle is abs ....etc

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WATER MIST SYSTEM POSSIBILITIES AND FEASIBILITY
FOR PROTECTION OF OIL AND GAS INSTALLATION
RAKESH KUMAR RATNAGAR
FIRE OFFICER
ONGC ANKLESHWAR, GUJARAT
Email “ [email protected]
Depending on system design pressure, water
mist system classified into three categories
a) Low pressure water mist system: where
the pressure encountered by the system is
175 psi or less, the same pressure range
used for most of standard water spray
system
b) Intermediate
pressure
water
mist
system: where the pressure encountered
by the sy ....etc

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Respected Sir,
I am Karthik pursuing my B-Tech 3rd year in ECE.I would like to get some information about OPTICAL TWEEZERS.

Hoping a response from you at the earliest

Thanking You

Yours Respectfully
karthik ....etc

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ABSTRACT

FORMULA ONE- The worldâ„¢s largest spectator sport. What makes it so good? Cars, Drivers and their experience and most of all, the race track which helps these high techniques cars zoom at an excess of 320 kmph safely with the minimum of injuries or zero injuries in case of a crash or an accident. These tracks with their high tech safety barriers and other safety features which go into the making of the track like the use of CSAS( Circuit And Safety Analysis System) and barrier crash test makes ....etc

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1.The ratio of mobility of holes to mobility of electrons is :
(A)1:2’(B)2:1
(C )1:1(D)1:3

2.What happens to the Fermi level if an intrinsic semiconductor is doped with acceptor atoms?
(A)Unaffected(B)Slightly raised
(C )Slightly lowered(D)Considerably lowered

3.PIN diodes are used in which frequency range?
(A)20Hz-20kHz(B)Less than 100Hz
(C )20kHz-40kHz(D)Greater than 300MHz

4.Which of the following is not true for a common collector amplifier?
(A)Current gain is high(B) Voltage gain is high
(C ) Output ....etc

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Imagine a computer whose memory is exponentially larger than its apparent physical size; a computer that can manipulate an exponential set of inputs simultaneously; a computer that computes in the twilight zone of Hilbert space. You would be thinking of a quantum computer. Relatively few and simple concepts from quantum mechanics are needed to make quantum computers a possibility. The subtlety has been in learning to manipulate these concepts. Is such a computer an inevitability or will it is too difficult to build?

The subject of quantum co ....etc

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Abstract
To numerically simulate aerodynamics of rotor-airframe interaction in a
rigorous manner, we need to solve the Navier-Stokes system for a rotor-airframe
combination as a whole. This often imposes a serious computational burden since
rotating blades and a stationary body have to be simultaneously dealt with. An efficient
alternative is to adopt a momentum source method in which the action of rotor is
approximated as momentum source over a rotor disc plane in a stationary
computational domain. This makes the simulation much ....etc

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Abstract
To numerically simulate aerodynamics of rotor-airframe interaction in a
rigorous manner, we need to solve the Navier-Stokes system for a rotor-airframe
combination as a whole. This often imposes a serious computational burden since
rotating blades and a stationary body have to be simultaneously dealt with. An efficient
alternative is to adopt a momentum source method in which the action of rotor is
approximated as momentum source over a rotor disc plane in a stationary
computational domain. This makes the simulation much ....etc

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....etc

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