Experts agree that the biggest drain of energy takes place when a vehicle blasts off, pushing through Earth?s gravitational pull requires great amounts of fuel, but once they get out of our atmosphere, the rest is easy.

If you could cut out that ?blast off? portion, space travel would be easier and much more fuel-efficient.

In a Space Elevator scenario, a Maglev vehicle would zoom up the side of an exceedingly tall structure and end up at a transfer point where they?d then board a craft to the Moon, Mars, or any other distant destination ....etc

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Hydraulic elevator systems lift weights using a hydraulic ram, a fluid-driven piston mounted inside a cylinder. The cylinder is connected to a fluid-pumping system (typically, hydraulic systems like use oil, but other incompressible fluids would also work). The hydraulic system has three parts:
A tank (the fluid reservoir)
A pump, powered by an electric motor
A valve between the cylinder and the reservoir
The pump forces fluid from the tank into a pipe leading to the cylinder. When the valve is opened, the pressurized fluid will take ....etc

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SPACE ELEVATOR A NANO DREAM


THE Concept

A 35000-mile long cable
will hang in space, stationary and tight !
CentripetAl force
The space elevator is a cable that can be ascended from Earth to space, with one end fixed on earth.


Build in a similar way to how difficult bridges were built in the past. In building a bridge, the first thing that was done was a small string was thrown or shot across a canyon. Then a larger string is attached to this first small string and pulled across.

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ABSTRACT



Because of high requirements in power, efficiency, installation space and weight, the design of electrical machines for hybrid electrical vehicles is a particular challenge. This seminar describes a comparative study allowing the selection of the most appropriate electric-propulsion system for a parallel hybrid electric vehicle (HEV). This seminar is based on an exhaustive review of the state of the art and on an effective comparison of the performances of the four main electric propulsion systems, namely the d ....etc

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1.Zero voltage regulation in a transformer occurs at :
(A)zero p.f. lead 
(B)unity p.f.
(C )leading p.f.
(D)lagging p.f.

2.A parallel plate capacitor has 15 p.F capacitance. If the linear dimensions of the plate are doubled and the distance between the plates are also doubled, then new value of capacitance would be :
(A)15uF
(B)30 uF
(C )60 uF
(D)7.5 u.F

3.Resistance of a 230 V 100 W bulb is R1 and that of a 230 V 75 W is R2. Then,
(A)R1= R2
(B)R1 > R2
(C )R1 < R2
(D)R1 - 2R2

4.The current in a series ....etc

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Hi,
I'm just looking for this ppt. Hope i get it. I want it just for educational purpose.

Thank You. ....etc

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hi,
i want to ask about how to implement wormhole attacks prevention in tcl code
thanks ....etc

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Problem Statement

Traffic Congessions are a major problem in all the metropolitan cities. One of the main causes for these congessions is improper setup of wait times at the signals of major junctions. It is often observed that the traffic police change the timing of each of the signals randomly based on the traffic on each of the routes at the junction or even sometimes they switch to managing the traffic manually after switching off the signals completely.

There is a requirement to understand the traffic flows at all the major junctions ....etc

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Abstract
We demonstrate that DNA computers can simulate
Boolean circuits with a small overhead. Boolean circuits
embody the notion of massively parallel signal processing
and are jrequen,tly encountered in many parallel algorithms.
Many important problems such as sorting, integer arithmetic,
and matrix multiplication are known to be computable
by small size Boolean circuits much faster than by ordinary
sequential digital computers. This paper shows that DNA
chemistry allows one to simulate large semi-unbounded janin
Boolean ci ....etc

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