Electronics Engineering

dc ammeter has three connecting pins while ac has four

a screw a tool and a margin is when you draw a line down your page of work

op-amp can be nulled using offset voltage about +/- 1.5 mv to offset pins

Here first, the value of variable is incremented/decremented , then the value of variable is taken for operation. For eg. :- Consider the following statements-

1. x=++y ; ( where y=10 )

After execution, value of x & y is -

x=11;

y=11;

Because first, the value of y is incremented by 1 and then assigned to x.

The anode is the arrow shaped end, while the cathode is the bar shaped end. You can remember this by recalling that current flows from anode to cathode in an ordinary diode; well, that is, if you use the trick of assuming that current is hole flow, rather than electron flow, a useful and common convention. The exception, of course, is the zener diode, where current flows in both directions, but at different potentials. In this case, there are two 45 degree angled bars at the end of the cathode symbol, and the normal configuration of current flow is cathode to anode, backwards with respect to an ordinary diode.

FM also known as frequency modulation is preferred because of the more concise ability to transfer quality sound at the expence of distance. Also FM is not as severely effected by weather as its lower frequency AM counterpart.

use Ohm's law: to drop 2 volts,

V = I x R

2 = current x resistance

resistance = 2 / current.

So you need to know the current

Corrosion is occurs when a metal becomes wet or damp. A current flows through this, making the unmoving particles throught the steel to the more reactive parts on the surface. These are called anodes. The current returns from the more reactive parts, through it, and then back to the the more still parts. Where the current leaves the anode, rust forms.

Wet corrosion happens when a metal or other material is wet or damp- (or can be caused through the mositure in the air)

Dry corrosion is similar, however the difference is that it forms through the presence of gasses in the air

It is a bidirectional power flow converter

No.

Soon after its anode current falls to zero, the device is not is a state to block the forward voltage due to the presence of carriers in its four layers its still in conduction mode. Thus at first it takes some time to remove excess charge from the four layers.

Thus just after its anode currents decays to zero it is unable to block the forward voltage.

• tradition
• it is often used (like a storage tank for water is) to store resonant energy in AC circuits.

diode detector for am demodulation

LM stand for Liner Monolithic ic that is the National Instrunt perfix, I My right

We use DC voltages in an electrostatic precipitator (ESP) because it is necessary to induce a charge on the particulates, and then attract them to a plate by the use of an opposite charge. An AC source would be changing constantly. That would leave our particulates picking up "different charges" at different times as they pass the plates. Further, these particulates wouldn't be attracted to the plates because the plates would be changing polarity as well.

ESP's use a DC source to apply a charge of a given polarity to the particulates in the air stream, and use a plate of the opposite charge to attract and "hold" the particulates. AC sources can't do that.

With respect to an RLC circuit, the critical resistance is the resistance which would critically dampen the circuit. This means a resistance lower than the critical resistance would create an under-damped situation, and higher than the critical resistance would create an over-damped situation. An underdamped circuit will ocillate, an overdamped circuit will decay exponentially over a long period of time. The critically damped circuit will immediately decay to zero (time dependent on the values of the circuit elements)

Sr flip-flop is a bistable device with two states set and reset.

Thecolorcode of 2.2 ohms resistor is red red yellow silver.

The Indian electronics system design and manufacturing (ESDM) industry is at a huge inflection point. From being predominantly consumption-driven, the Indian ESDM industry holds potential to become a design-led manufacturing industry. Concerted efforts from both the government and the industry are required to propel the Indian ESDM industry into one of the critical GDP contributors soon. ndia Electronics and Semiconductor Association (IESA), the trade body, representing the Indian electronic system design and manufacturing space, in collaboration with Markets And Markets, on Tuesday, launched an industry report on Indian semiconductor fabless startup ecosystem at its annual Vision Summit. The report was launched by Ashwini K Aggarwal, Chairman, IESA; Anilkumar Muniswamy, Director, SLN Technologies Ltd. and Jitendra Chaddah, Chair, Fabless CIG and Senior Director, Strategic Relations and Operations, Intel India on Day 1 of Vision Summit.

Yes. The direction does not matter.

Load current is related to load resistance by an inverse relationship. The load current increases linearly as load resistance decreases. Remember, the less resistance, the more current.

In a common emitter amplifier, the base-emitter current causes a corresponding collector-emitter current, in the ratio of hFe (beta gain) or collector resistance over emitter resistance, which ever is less. Since this ratio is usually greater than one, the differential collector current is greater than the differential base current. This results in amplification of the base signal.

As you increase the base-emitter current, the collector-emitter current also increases. This results in the collector being pulled towards the emitter, with the result that the differential collector voltage decreases. This results in inversion of the base signal.

PPM is a type of pulse modulation where messages are sent using single pulses. PWM is a type of modulation which conforms to the pulse. PAM is a type of modulation in which the information is encoded into a series of pulses.

Common Emitter(CE) Configuration possess largest voltage gain among the three(CE CB CC).

due to the poor conduction at room temperature,the intrinsic semiconductor as such,is not useful in the electronic devices.hence,the current conduction capability of the intrinsic semi conductor should be increased. this can be achieved by adding a small amount of impurity to the intrinsic semi conductor