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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Abstract:
A nanometer is one billionth of a meter. If you blew up a baseball to the size of the earth, the atoms would become visible, about the size of grapes. Some 3- 4 atoms fit lined up inside a nanometer. Nanotechnology is about building things atom by atom, molecule by molecule. The trick is to be able to manipulate atoms individually, and place them where you wish on a structure.

Nanotechnology uses well known physical properties of atoms and molecules to make novel devices with ex ....etc

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?Nanotechnology has given us the tools?to play with the ultimate toy box of nature- atoms and molecules. Everything is made from it?The possibilities to create new things appear limitless.? Blanket term used to describe the precision manufacture of materials and structures of molecular dimensions.Next level of ultimate precision and miniaturization.Provides tools to manipulate matter at the atomic scale.the different classifications of nanotechnology are Wet nanotechnology ,Dry nanotechnology ,Computational nanotechnology. ....etc

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Nanotechnology will help bring in strategically important driving force to future electronics. Intensive R & D on nanotechnology for chip applications is being driven from two distinct directions: 1) to sustain and enhance the great technology momentum established in decades by silicon ICs and 2) to explore revolutionary technologies in the ?beyond-silicon? era. Nanotechnology-enabled chip systems offer merits such as energy-efficiency, scalability, surface sensitivity, tunable properties, and low fabrication cost, all in tune with the futur ....etc

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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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Today, the technology meant for manufacturing different commodities in various fields are considered to be very expensive, time consuming and cannot be entirely utilized. Think about a technology with which man can create any kind of commodity in lesser timer, with lesser money and which is very efficient.Biomolecular Nanotechnology means molecular manufacturing or, simply building things from one atom or molecule at a time with programmed nanoscopic robot arms.Biomolecular Nanotechnology is about rearranging atoms whichever way we want. The us ....etc

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ABSTRACT
Nanotechnology is one of the fastest growing fields in
research and technology. The main interest of
nanotechnology is not electrical power engineering but
there were a lot of possible applications to improve
electrical, mechanical, thermal or chemical properties of
electric power equipment. Often the economic aspect is
pointed out, but also a higher efficiency or a reduction of
losses predicts this new technology a successful appearance
in power engineering.
In this paper the state of the art in na ....etc

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Definition
Nanotechnology is defined as fabrication of devices with atomic or molecular scale precision. Devices with minimum feature sizes less than 100 nanometers (nm) are considered to be products of nanotechnology. A nanometer is one billionth of a meter (10-9 m) and is the unit of length that is generally most appropriate for describing the size of single molecules. The nanoscale marks the nebulous boundary between the classical and quantum mechanical worlds; thus, realization of nanotechnology promises to bring revolutionary capabilities ....etc

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Nanotechnology, development and production of artefacts in which a dimension of less than 100 nanometres (nm) is critical to functioning (1 nm = 10-9 m/40 billionths of an inch). Nanotechnology is a hybrid science combining engineering and chemistry. Atoms and molecules stick together because they have complementary shapes that lock tog- ether, or charges that attract. As millions of these atoms are pieced together by nanomachines, a specific product will begin to take shape. The goal of nanotechnology is to manipulate atoms individually and pl ....etc

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Imagine a supercomputer no bigger than a human cell. Imagine a four-person, surface-to-orbit spacecraft no larger or more expensive than the family car. Imagine attaining immortality by drinking a medicine. These are just a few products expected from Nanotechnology.

Nanotechnology is molecular manufacturing or, more simply, building things one atom or molecule at a time with programmed nanoscopic robot arms; Nanotechnology proposes the construction of novel molecular devices possessing extraordinary properties. The trick is to ma ....etc

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