The process of dividing an analog signal into a string of discrete outputs, each of constant amplitude, is called: (A) Strobing (B) Amplification (C) Conditioning (D) Quantization

1 Answer

Answer :

(D) Quantization

Related questions

Description : Which of the following steps is/are not required for analog to digital conversion ? (a) Sensing (b) Conversion (c) Amplification (d) Conditioning (e) Quantization Codes : (A) (a) and (b) (B) (c) and (d) (C) (a), (b) and (e) (D) None of the above

Last Answer : (D) None of the above

Description : Choosing a discrete value that is near but not exactly at the analog signal level leads to a) PCM error b) Quantization error c) PAM error d) Sampling error

Last Answer : b) Quantization error

Description : A pulse modulation technique as the width of a constant amplitude pulse is varied proportional to the amplitude of the analog signal at the time the signal is sampled.

Last Answer : PWM, PLM, PDM

Description : An analog signal carries 4 bits in each signal unit. If 1000 signal units are sent per second, then baud rate and bit rate of the signal are ............... and .............. (A) 4000 bauds \ sec & ... (B) 2000 bauds \ sec & 1000 bps (C) 1000 bauds \ sec & 500 bps (D) 1000 bauds \ sec & 4000 bps

Last Answer : (D) 1000 bauds \ sec & 4000 bps Explanation: Bit rate is the number of bits per second. Baud rate is the number of signal units per second. Baud rate is less than or equal to the bit rate. Baud rate = 1000 bauds per second (baud/s) Bit rate = 1000 x 4 = 4000 bps

Description : An analog signal has a bit rate of 6000 bps and a baud rate of 2000 baud. How many data elements are carried by each signal element ? (A) 0.336 bits/baud (B) 3 bits/baud (C) 120,00,000 bits/baud (D) None of the above

Last Answer : (B) 3 bits/baud

Description : Suppose a digitized voice channel is made by digitizing 8 kHz bandwidth analog voice signal. It is required to sample the signal at twice the highest frequency (two samples per hertz). What is the bit rate required, if it ... sample requires 8 bits? (A) 32 kbps (B) 64 kbps (C) 128 kbps (D) 256 kbps

Last Answer : (C) 128 kbps

Description : Bits can be sent over guided and unguided media as analog signal by ___________ a. digital modulation b. amplitude modulation c. frequency modulation d. phase modulation

Last Answer : a. digital modulation

Description : …………………. is a group of interested components working together towards a common goal by accepting inputs and producing outputs in an organized transformation process. A) System B) Network C) Team D) System Unit

Last Answer : A) System

Description : The signals which are obtained by encoding each quantized signal into a digital word is called as a) PAM signal b) PCM signal c) FM signal d) Sampling and quantization

Last Answer : b) PCM signal

Description : _______ is more prevalent in analog signals that have steep slopes or whose amplitudes vary rapidly. A. Peak limiting B. Quantization noise C. Granular noise D. Slope overload

Last Answer : D. Slope overload

Description : The redundancy in images stems from: (A) pixel decorrelation (B) pixel correlation (C) pixel quantization (D) image size

Last Answer : (B) pixel correlation

Description : In PCM encoding, quantization level varies as a function of ________ a) Frequency b) Amplitude c) Square of frequency d) Square of amplitude

Last Answer : b) Amplitude

Description : Why are so many newer TVs without analog audio outputs or headphone jacks?

Last Answer : For the same reason that new TVs no longer use analog videosignals. Everything is switching to digital.

Description : State True or False. i) In spooling high speed device like a disk is interposed between running program and low-speed device in Input/output. ii) By using spooling for example instead of writing directly to a printer, ... ii-False B) i-True, ii-True C) i-False, ii-True D) i-False, ii-False

Last Answer : B) i-True, ii-True

Description : Consider a project with the following functional units : Number of user inputs = 50 Number of user outputs = 40 Number of user enquiries = 35 Number of user files = 06 Number of external interfaces = 04 ... average, the function points for the project will be (A) 135 (B) 722 (C) 675 (D) 672

Last Answer : (D) 672

Description : The three outputs x1x2x3 from the 8x3 priority encoder are used to provide a vector address of the form 101x1x2x300. What is the second highest priority vector address in hexadecimal if the vector addresses are starting from the one with the highest priority? (A) BC (B) A4 (C) BD (D) AC

Last Answer : Answer: B

Description : _______ data have discretestates and take discrete values. A) Analog B) Digital C) (a) or (b) D) None of the above

Last Answer : Digital

Description : Superficially the term object-oriented , means that, we organize software as a (A) collection of continuous objects that incorporates both data structure and behaviour. (B) collection of ... and behaviour. (D) collection of objects that incorporates both discrete data structure and behaviour.

Last Answer : (C) collection of discrete objects that incorporates both data structure and behaviour.

Description : Consider a discrete memoryless channel and assume that H(x) is the amount of information per symbol at the input of the channel; H(y) is the amount of information per symbol at the output of the channel; H(x|y) is the amount of uncertainty ... (H(x) - H(x|y))]  p(x) (D) max H(x|y)  p(x)

Last Answer : (D) max H(x|y)   p(x)

Description : In the illustrated electronic governor, the circuit card connected to the potential and current transformers is for ________. EL-0046 A. increasing the signal strength to the governor to ... from motorization D. conditioning the load through the use of a magnetic amplifier current transformer

Last Answer : Answer: A

Description : Which causes a quantization noise in PCM system? A. Serial transmission errors B. The approximation of the quantized signal C. The synchronization between encoder and decoder D. Binary coding techniques

Last Answer : B. The approximation of the quantized signal

Description : Which causes a quantization noise in PCM system? A. Serial transmission errors B. The approximation of the quantized signal C. The synchronization between encoder and decoder D. Binary coding techniques

Last Answer : The approximation of the quantized signal

Description : What is the quantization signal-to-noise ratio if an 8-bit PCM code is used? A. 40 dB B. 50 dB C. 60 dB D. 65 dB

Last Answer : B. 50 dB

Description : Quantization noise is caused by A. binary coding techniques B. serial transmission errors C. the synchronization between encoder and decoder D. the approximation of the quantized signal

Last Answer : D. the approximation of the quantized signal

Description : Companding helps in reducing __________ with respect to signal: (A) Interference (B) Signal overloading (C) Non linearity (D) Quantization noise

Last Answer : (D) Quantization noise

Description : In a PCM system the number of quantization level are 16 and the maximum signal frequency is 4 KHz the transmission bit rate is

Last Answer : In a PCM system the number of quantization level are 16 and the maximum signal frequency is 4 KHz the transmission bit rate is 32 Kbits/sec

Description : A satellite which simply reflects the signal without further amplification A. Passive satellite B. Active satellite C. Geostationary satellite D. Domestic satellite

Last Answer : A. Passive satellite

Description : ECE Board Exam March 1996 The expander in a companding device provides ___________. A. greater amplification for low signal levels B. less amplification for low signal levels C. greater amplification for high signal levels D. lesser pressure for transmission

Last Answer : B. less amplification for low signal levels

Description : Decrease in strength of signal is known as A. tuning B. modulation C. attenuation D. amplification

Last Answer : attenuation

Description : An increase in light intensity produces fast optic switching due to ∙ a. Increase in index of glass ∙ b. Amplification of optical signal ∙ c. High gain ∙ d. Photoconductivity

Last Answer : b. Amplification of optical signal

Description : A carrier signal has ______. A. Constant peak amplitude B. The information C. Frequency range 20-20000 Hz D. A varying amplitude

Last Answer : A. Constant peak amplitude

Description : In________, the phase of thecarrier is varied to represent two or more different signal elements. Both peak amplitude and frequency remain constant. A) ASK B) PSK C) FSK D) QAM

Last Answer : PSK

Description : Data items grouped together for storage purposes are called a A) record B) title C) list D) string

Last Answer : A) record

Description : Differentiate between analog and digital computers

Last Answer :  Analog computer:  Analog computers represent and process data by measuring quantities such as voltage and current to solve a problem.  They work on supply of continuous signals as input. ... memory capacity.  They are being used in business, education, health, supermarkets & banking. 

Description : What, if any, noise susceptibility advantage exists for pulse-amplitude modulation over analog amplitude modulation?

Last Answer : Both are susceptible to noise and interference

Description : If f(x, y) is a digital image, then x, y and amplitude values of f are (A) Finite (B) Infinite (C) Neither finite nor infinite (D) None of the above

Last Answer : (A) Finite

Description : The process of dividing a total market into market groups so that persons within each group have relatively similar product needs is called: A)segmenting B)differentiating C)target marketing D)concentrating

Last Answer : A)segmenting

Description : Which is true for Digital Computer: a) It is less accurate than analog computer b) It is used primarily in scientific applications c) It represents the decimal numbers through a string of binary digits d) None of The Above

Last Answer : b) It is used primarily in scientific applications

Description : In what way is a file more flexible than a String?

Last Answer : Ans: A file is stored permanently in a storage device.It is easy to access a file whenever required. On the other hand, a string is stored temporarily in RAM, and the contents of a string will be erased automatically when the power is switched off or when the program execution is terminated.

Description : Why is the ‘S’ of String capital?

Last Answer : A: Since String is a class.

Description : Is it compulsory to write String args[] when running a program in BlueJ?

Last Answer : A: No it is not compulsory when we are running it in BlueJ. But normally (in all other cases) it is always better to have it, as the JVM looks for the main method with a String array as a parameter.

Description : Which command is used to concatenate all files beginning with the string 'emp' and followed by a non-numeric characters? A. cat emp[!0-9] B. more [emp][!0-9] C. cat emp[x-z]

Last Answer : A. cat emp[!0-9]

Description : Which command is used to change protection mode of files starting with the string emp and ending with 1,2, or 3? A. chmod u+x emp[l-3] B. chmod 777 emp* C. chmod u+r ??? emp D. chmod 222 emp? E. None of the above

Last Answer : A. chmod u+x emp[l-3]

Description : Which command is used to copy all files having the string chap and any two characters after that to the progs directory? A. cp chap?? progs B. cp chap* progs C. cp chap[12] /progs/*.*

Last Answer : A. cp chap?? progs

Description : In java, string is a ............. A) primitive data type B) abstract data type C) combination of boolean D) None of the above

Last Answer : B) abstract data type

Description : Which of the following methods belong to the string class? A) length( ) B) compare To ( ) C) equals ( ) D) All of them

Last Answer : D) All of them

Description : Which of the following methods belong to the string class? A) length( ) B) compare To ( ) C) equals ( ) D) All of them

Last Answer : D) All of them

Description : The class string belongs to ................... package. A) java.awt B) java.lang C) java.applet D) java.string

Last Answer : B) java.lang

Description : What would happen if "String[]args" is not included as argument in the main method. A) No error B) Compilation error C) Program won't run D) Program exit

Last Answer : C) Program won't run