Electronics Engineering

Amplitude modulation is one way to carry information on a carrier, such as a

radio signal. Another way is FM (Frequency Modulation). While FM offers greater

clarity for audio, and the higher frequencies that FM use offer a wider

bandwidth, allowing for more information to be transmitted, one application

where FM and digital are not suitable are Aviation communication, which to this

day still use AM analogue. This is because weaker signals can be heard over

stronger, closer ones with AM, allowing for emergency transmissions to have

more chance of being heard over other traffic. Also, AM uses a narrower

bandwidth than FM, allowing more users in a smaller space. This is important for

the lower frequencies of Radio, where space is at a premium (ie shortwave

bands).

The 'sparkling' of diamonds is due to the way the diamonds are cut, plus the fact that diamonds have a high index of refraction results in the total internal reflection of light. The high index of refraction means that diamonds have a very small minimum critical angle (recall the diamond to vacuum in the observation table). The minimum critical angle in a diamond is 24.4 degrees. Therefore, a lot of the incident light experiences total internal reflection inside the diamond. A ray of light can reflect several times in the diamond before exiting through the top of the diamond.

Fibre optics is a technology that uses light to transmit information along a glass table. To achieve the light not escaping as it travels through the cable, it must have a small critical angle so that the light entering it will have an angle of incidence greater than the minimum critical angle for this medium.

error correction

data compression

The simplest application of a UJT is as a relaxation oscillator, which is defined as one in which a capacitor is charged gradually and then discharged rapidly.

In an op-amp, an input on the inverting terminal drives the output in the opposite direction, while an input on the non inverting terminal drives the output in the same direction.

In a normal closed loop negative feedback configuration, there is feedback from output to inverting input, so that the output becomes a known function of input. So long as you stay within limits, the output will go to whatever value is required to make the inputs be the same.

both flip-flop and buffers are used for same purpose(i.e) for holding the data for a specified clock period.....in the case of area reduction these buffers can be used in the place of flip-flop.....

with the help of function generator we found wave in oscilloscope

Connect 50 of them in series. This would have 50 ohm as equivalent. Same way have another 50 pieces in series. This again would have 50 ohm as effective value. Now connect these in parallel to each other. Now the effective would become as 25 ohm.

The whole circuit fails - because the action of the bulb blowing cuts the circuit.

The main difference is specilization. I am a chemical engineer myself, and we have the option of specializing in a wide variety of degrees, such as genetic engineering. Note that chemical engineering is a very broad field dealing with polymers, metallurgy, biology, environmental chemistry, and the list goes on. Genetic engineering, in short, is really a specialization of chemical engineering to specifically biological chemistry.

to made reverse bias junction between gate to source

It means that the loudspeaker maker tells you that his loudspeaker builds an input impedance (load impedance) of Zload = 4 to 8 ohms. In audio we use always voltage matching and so the amplifier output should have a source impedance of smaller Zsource = 0.1 ohm. Scroll down to related links and look for "Damping Factor".

if the aircraft is the standard aluminum airframe. any power ground should be less than 1 Ohm. A digital multimeter is best for the novice. for more serious applications a mega-ohm meter should be used. but be careful, most of this meters output more that 600 Volts.

Switches used in electrical circuits are wired in series with either a parallel or series load. In parallel loads, the switch is upstream from the parallel circuit, so that the switch will shut off all of the parallel circuits.

The primary reason that NPN transistors are used more often than PNP transistors is that they usually operate faster (at higher frequencies) because the mobility of the current carriers in NPN transistors (electrons) is much higher than that of the current carriers in PNP transistors (holes).

Well, the total circuit resistance depends on the type of connection.

If the two resistances (or any number of resistances) are connected in series, IE. one resistance end is connected to one end of another resistance, the the circuit total resistance is the sum of the two resistances. say two resistances r1 and r2 are connected in series the total resistance is r1+r2 (in this case its 30 ohms).

If the resistances are connected in parallel IE. both the ends of a resistance are connected to both ends of another resistance then the total resistance in this case shall be (r1*r2)/(r1+r2) ,( that is 6.67 ohms in given case).

In this case current flows from a high voltage to a lower voltage in a circuit.

Television Broadcasting

Watts and amps measure different aspects of electricity and are not interchangeable.

for...example..you..have..frequency...range...of..f1-f2-f3-f4,

now..your..work..requires..you..to..avoid..frequency..band..of..f2-f3....

what..you..will..do???you..have..to..avoid..or...reject..that..particular..band...so..you..will..

have..to..design..a..filter..circuit..according..to.the..requirement..

The higher the resistance the lower the current flow. It restricts the flow of electrical current. The resistance will not depend upon the current. The current flow will depend on the resistance.

Yes because an amplifier with positive feedback is an oscillator.

Reading this question, one kind of has to guess what's being asked. Here's a statement
that may or may not be helpful to the questioner:

A series circuit is one in which there's never a point where the current has to decide
which path to take. There's never a point where the current can split, and there's only
one possible route all the way through the circuit.

In a series circuit, the magnitude of the current is the same at every point.

Not usually, and not directly. But some wind turbines are noisy, and if someone has a house nearby that does not insulate against sound very well, the noise may keep the residents from sleeping well. This in turn could cause health problems. ( The noise from traffic on a highway is much worse than the noise from a wind turbine.)