Electronics Engineering

The bandwidth of a resonant circuit is defined as the distance between the two -3dB rolloff points in the response curve.

msbte summer 2007 results have been declared on internet. I have seen on 20/07/2007 at 2330.

Using Ohms law ... E = I * R

Where

E is electromotive force in volts

R is resistance in Ohms

I is the current in amps (why "I", I don't know maybe some one else can edit this line)

E = 2 amps * 10 ohms = 20 volts

A MOSFET (metal oxide semiconductor field effect transistor) can be used INSTEAD of a BJT (bypolar junction transistor, so transistor is redundant in your question), if the circuit in question is modified to allow it and the MOSFET is chosen appropriately. BJT's will usually have a higher intrinsic gain, but have lower input resistance. Also a BJT in general will work better at higher frequencies than a MOSFET (unless you choose a high frequency MOSFET) due to the capacitive nature of MOSFETs.

This is because the current kills the magnetized/domain particles and so it becomes un-magnetized.

When the domains are magnetized they all face the direction of the magnet but when they have been destroyed by an AC current... they are pretty much jumbled together!

It isn't necessarily so. The capacitive voltage is the product of the current and capacitive reactance, while the inductive voltage is the product of the current and the inductive reactance. So it depends whether the capacitive reactance is greater or smaller than the inductive reactance!

The force on current carrying conductor kept in a magnetic field is given by the expression F = B I L sin@

So the force becomes zero when the current carrying conductor is kept parallel to the magnetic field direction and becomes maximum when the current direction is normal to the magnetic field direction.

Ok now why does a force exist on the current carrying conductor?

As current flows through a conductor magnetic lines are formed aroung the conductor. This magnetic field gets interaction with the external field and so a force comes into the scene.

Inductance

It is called an amplifier.

That depends on what type of IC you're asking about.

IC stands for Integrated Circuit, meaning that the circuit can have quite a number of components.

Basically, they are composed of miniaturized transistors that have been manufactured in such a way as to create a circuit that performs a specific function.

If you want a buffer that accepts a stream of data and stores it until it is called for by a micro-controller, there are IC circuits that do that. Many transistors are combined in a way that functionally creates a set of J-K flip-flops or equivalent memory units, a counter is created that points to where the NEXT data bit should be stored, and peripheral circuitry is included to allow for reading and clearing the data.

It's all performed at the sub-miniature level and in such a way as to allow it all to be on a single chip.

Different IC chips will have different requirements, and as such will be designed in a completely different way with unique internal circuitry. The IC industry is not a simple technology, and as such will require quite a bit of education in math, electronics and physics to understand.

10 volts divided by 30 ohms is 0.33333 amperes.

10 volts times 0.33333 amperes is 3.3333 watts.

Note: Resistance is dependent on temperature. 3 watts is enough power to raise the temperature enough to affect the resistance, changing the results.

A basic capacitor is made up of two conductors separated by an insulator, or dielectric. The dielectric can be made of paper, plastic, mica, ceramic, glass, a vacuum or nearly any other nonconductive material. Some capacitors are called electrolytics, meaning that their dielectric is made up of a thin layer of oxide formed on a aluminum or tantalum foil conductor.

A digital system is one which works at most basic level. Digital systems are based on discontinuous data or events ,they can distinguish between just two values 1 and 0. Where 0 is Off and 1 is On.

Hz is short for Hertz and means "vibrations per second"; the prefix "M" means mega, that is, millions.

The On/OFF action in UJT is controlled by emitter current

A transformer is a passive device while an amplifier is an active device. a transformer can amplify voltage but never power WHILE AN AMPLIFIER CAN amplify power's can you use it sure withing the limitation of the transformer and only to amplify volts.

A double pole switch can be used in either a 240V application where you'll need to disconnect 2 "hot" lines, or it is useful when switching a light from 3 different switches.

Disadvantage?

I suppose it could be a little confusing to face all those contacts on a double pole switch.

It will depend on the application. If you are trying to rapair some thing which as per design needs 470uF capacitor but you only have 100uF capacitors available., you can put 5 of these in parallel if possible (if SMD you can put one on top of another and solder). That will give you a total of 500uF close to the original value.

- Neeraj Sharma

It depends on the current to be measured at hi amperage the shunt must be as small in value as possible also the power requirements must be considerate a shunts that heat up is definitely not desirable since it will change value as a function of its temperature

Depending on the type of DC motor, it will either run normally or just heat up and make noise.
i think the motor will rotate to and frow.means it will rotate in clycle.it will complete half cycle.and after it will complete its other half cycle in anticlockwise direction.

Conduction band - The unfilled energy levels into which electrons can be excited to provide conductivity.Valence band - The energy levels filled by electrons in their lowest energy states.

A: Actually it begins to conduct almost as soon as there available current. but the current is such a low value that it is considered not to be conducting at all. And the 0.7 volts drop is a chosen value to indicate that the diode is fully conducting and the voltage drop across is .7 volts there about. It can have any value lower then that and it all depends on the current flowing at the time.