Bissoy.com
Doctors Medicines MCQs Q&A

Which of the following measures cannot be effective in reducing the noise?

Which of the following measures cannot be effective in reducing the noise? Correct Answer Increase in channel bandwidth

Signal to noise ratio is one of the important parameters to analyze the performance of a communication system. It is, therefore, always desirable to reduce the noise power and increase the signal power for efficient transmission and reception.

The factors that determine the amount of noise present include:

Bandwidth:

  • The amount of noise present is proportional to the channel bandwidth.
  • More the channel bandwidth, the more will be the noise present.
  • For Example, White noise is uniformly present for all the frequencies. More the bandwidth more will be the net effect of noise. 
  • ∴ Increasing the channel bandwidth cannot help in reducing the noise.

 

Signaling Rate:

  • More the signaling rate, narrower will be the pulses in time domain.
  • Since the time and frequency domain are inversely related, more the signaling rate, more will the spread in the frequency domain.
  • This will result in more interference with noise.
  • ∴ Less the signaling rate, less will be the interference of noise.

 

Transmitted Power:

  • The signal power depends on the transmitted power.
  • More the transmitted power, more will be the signal power, that will result in more signal to noise ratio.
  • ∴ The effect of noise is reduced when the transmitted power is increased.

Related Questions

Below a question is given with one passage and its effects (I) and (II). One of these effects or both or none may be the effect of the statement. Read both the effect and decide which of the following answer choice correctly depicts the relationship between these cause and effect. Passage: In the urban area there exist a lot of industries, commercial places and public places religious places which involve a lot of a  people and working machinery note of sound and when this sound becomes unpleasant it is known as noise. it is one of the reasons why public authorities have divided the city into a number of zones is known as a different noise level. Effects: I        Noise leads to emotional and behavioural stress. A person may feel disturbed in the presence of loud noise such as produced by heating of drums. II       Noise may cause damage to the liver, brain, and heart.  
Which of the following are the basic differences between vibration signature and noise signature? 1. Vibration signature is essentially in the frequency range zero to 100 cps whereas noise signature is in the range 20 cps to 3000 cps. 2. Vibration signature has well-defined peaks whereas the noise signal is smeared. 3. The intensities of noise signatures arc much less than that of vibration signatures. 4. Detection of vibration signature calls for a microphone whereas that of noise can do with a pickup. Select the correct answer using the code given below.
Which of the following are barriers to effective communication? 1. Physical noise 2. Semantic noise 3. Psychological noise 4. Non-semantic noise Choose the correct answer from the options given below.
Thermal noise shot noise and transit time noise is part of internal noise in communication.
Atmospheric noise, extraterrestrial noise and man-made noise is part of internal noise in communication.
Antenna noise temperature of a system is 210 K, noise temperature of transmission line is 123 K, loss of a transmission line connecting the antenna to receiver is 1.41 and noise temperature of the receiver cascade is 304 K. then the total system noise temperature is:
Which of the following measures by the government will lead to a reduction in inflation? 1. Reducing government tax collection 2. Reducing government spending 3. Banning the export of essential items Which of the above statements is/are correct
What is the formula of virtual effective diameter in case of unified threads? . b) Simple effective diameter – . c) Simple effective diameter + . d) Simple effective diameter – .
In the following question, there are six sentences marked S1, S6, P, Q, R and S. The positions of S1 and S6 are fixed. Choose one of the options given below which would be the most logical sequence of the sentences in the passage. S1- While the judiciary has many important roles to fulfill, the ones that stand out in the current political climate are: P- Two, to protect the fundamental and other rights of the citizens of India. Q- It is the judiciary’s duty to ensure that whatever measures are enacted by the legislature or the executive are in keeping with the Constitution.  R- This means that if it has reason to believe that legislative measures go against the Constitution of the country, it can strike them down.  S- One, to act as guardian and interpreter of the Constitution. S6- Similarly, if these measures violate the fundamental rights of the citizens or even other rights, the judiciary can stall or end them.
A tangent is drawn from a point p outside the circle, which touches the circle at point A and B, another tangent is drawn from a point E on the circumference on the circle, which touches the line PA and PB at C and D, if PC measures 8 cm, PD measures 9 cm and CD measures 7 cm, then find the radius of circle.