Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Q. What do you mean by Noise?
In any communication system there are usually two dominant factors that limit the performance of the system:
1. Additive noise, generated by electronic devices that are used to filter and amplify the communication signal.
2. Signal attenuation, as the signal travels through a lossy channel. A simple mathematical model of a channel with attenuation and additive noise is shown in Figure. If the transmitted signal is s(t), the received signal is given by
r(t) = αs(t) + n(t)
where α < 1, and n(t) represents an additive random noise process corrupting the transmitted signal. Physically, the additive noise may arise from electronic components and amplifiers at the receiver of the communication system, or from interference encountered in transmission as in the case of radio-signal transmission. The effect of signal attenuation is to reduce the amplitude of the desired signal s(t) and, thus, to render the information-bearing signal more vulnerable to additive noise.
Signal attenuation in many channels can be offset by using amplifiers to boost the signal level during transmission. However, the amplifier also introduces additive noise in the process of amplification, thereby corrupting the signal. The additional noise must also be taken into consideration in the design of the communication system.
AC Link Chopper This copper has two stage conversion. First DC is converted into AC by the use of inverter. The magnitude of AC voltage is varied by the transformer and
Q. 10-kVA, 4800:240-V, 60-Hz, single-phase transformer has an equivalent series impedance of 120 + j300 referred to the primary high- voltage side. The exciting current of the tr
For Sign Flag CP ( Call on plus ) CM (Call on minus ) Instruction CP call the subroutine from the specified memory location if sign flag is not set or reset( S=0)
Why we provide the short circuit and open circuit test in transformer
Explain the TEST instruction. TEST: The TEST instruction executes the AND operation. The difference is as the AND instruction changes the destination operand, whereas the TEST
Power Control A chopper converts fixed de input voltage to a controllable dc output voltage. It is the single stage dc to dc conversion device. It is a high speed on/ of
Q. Consider a current element I 1 d ¯ l 1 = 10 dz ¯ az kA located at (0,0,1) and another I 2 d ¯ l 2 = 5dx ¯ ax kA located at (0,1,0). Compute d ¯ F 21 and d ¯ F 12 experienc
Q. Considering the circuit shown in Figure, sketch v(t) and the energy stored in the capacitor as a function of time.
Help me, i need some answer regarding Voltage breakdown. What formula do I use?
Binary to Octal Conversion To convert a binary number into octal divide the number into group of three bits each starting from the least significant bit. Then put equiva
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd