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What type cable has the highest resistance to noise and carry a signal the longest distance?
Wiki User
∙ 11y ago
The type of cable that enables the longest transmission with the lowest loss is called Goubau line, or G-line, for short. This line has far less loss than either coaxial cable or parallel line (twinlead). By using conical shaped "launchers", G-line creates a type of waveguide.
Wiki User
∙ 8y ago
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What are the steps involved in finding the signal gain for a common-emitter BJT amplifier?
The signal gain of a CE BJT amplifier is hFe or collector resistance divided by emitter resistance, whichever is less.
What is the distance up to which the clap switch receives sound signal?
It's not the distance, it's the decibel.
Can you have a radio signal underground?
Yes, you can however the distance that a signal may be travel depends on the power and frequency of the signal. For signals at the same power a lower frequency signal will travel further.
Why transistor is called transfer of resistor?
Transistor=Transfer+Resistor. When Transistor operates in active region its input resistance is high and output resistance is low. So,We can consider transistor as a device which transfers its resistance from high to low. And by this property transistor amplifies input signal.
Which diode used for signal amplification zener or schottky or tunnel or none?
The diode that has a negative resistance region in its voltage-current curve.
Effects of the electric resistance on a signal?
Weak signal depending upon the type of signal.
Is a measure of the highest frequency of signal a multimode fiber can support over a specific distance and is measured in MHz-km?
Modal bandwidth
What signal has the longest wavelength?
radio waves
What are the steps involved in finding the signal gain for a common-emitter BJT amplifier?
The signal gain of a CE BJT amplifier is hFe or collector resistance divided by emitter resistance, whichever is less.
What effect will increasing the required transmission distance have on transmitting the signal clearly?
Increasing the required transmission distance of a signal will have a negative effect on the clearness of the signal. As the source is moved farther away from the receiver, a weaker signal will be present.
What is loss of signal over distance called?
Attenuation
Why the power of the spreading signal is reduced with respect to the original digital signal?
aatenuation due to long distance
What are the practical applications of the emitter follower?
See an analog design textbook for some specific examples but the gist of emitter follower's purpose in life is to transform a high output resistance signal source to achieve a signal with lower output resistance.
Inductive reactance has a unit in?
Ohms, resistance in an inductor increases as the frequency of the AC signal increases, this "artificial resistance" is called impedence, and it is measured in ohms
What is meant by static and dynamic resistance?
static resistance: This is measured when diode id forward biased and input is a D.C signal. The ratio of voltage applied to the current flowing through diode gives static resistance Dynamic resistance : this is measured when input is A.C signal. since A.C signal varies continuously the resistance offered also changes continuously. the ratio of change in voltage to change in current gives dynamic resistance.
IS Emitter base resistance greater than emitter collector resistance in transistor?
It depends on whether the transistor is in the active region or not. Usually, the transistor would be in the active region when we are asking this question. if we look at the data sheet for the popular 2N3905 transistor, available at http://www.fairchildsemi.com/ds/2N/2N3905.pdf, we see that if V collector-emitter is 10 V, the collector current is 1 mA, and the small signal frequency is 1 kHz, the typical small signal signal input impedance (which is nearly the same as small signal base-emitter resistance) is about 5,000 ohms. Under the same conditions, the typical output admittance, (which is nearly the same as the small signal collector-emitter resistance) is about 30 microsiemens. Calculate 1/0.000030 to find that this is the same as about 33,000 ohms, so in this case the collector-emitter small signal resistance is greater than the base-emitter small signal resistance. You might be able to find an operating point where the reverse is true.
What is the distance up to which the clap switch receives sound signal?
It's not the distance, it's the decibel.
