Description : 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
Last Answer : (D) Quantization
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 : Given the following statements: (a) Frequency Division Multiplexing is a technique that can be applied when the bandwidth of a link is greater than combined bandwidth of signals to be transmitted. (b) Wavelength Division Multiplexing (WDM) ... c) is true. (D) (a), (b) and (d) are true; (c) is false.
Last Answer : (D) (a), (b) and (d) are true; (c) is false.
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 : 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 : The redundancy in images stems from: (A) pixel decorrelation (B) pixel correlation (C) pixel quantization (D) image size
Last Answer : (B) pixel correlation
Description : Computers cannot communicate with each other directly over telephone lines because they usedigitalpulses whereas telephone lines useanalog sound frequencies. What is the name of the device which permits digital to analog ... A. Interface B. Modem C. Attenuation D. Teleprocessor E. None of the above
Last Answer : Modem
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 : A technique used by codes to convert an analog signal into a digital bit stream is known as A) Pulse code modulation B) Pulse stretcher C) Query processing D) Queue management
Last Answer : Answer : A
Description : A technique used by codes to convert an analog signal into a digital bit stream is known as a. Pulse code modulation b. Pulse stretcher c. Query processing d. Queue management
Last Answer : a. Pulse code modulation
Description : The conversion of digital signal into analog for purposes of transmitting into the telephone line is done through ______. A. ISDN B. Radio C. RS232C D. Modem
Last Answer : D. Modem
Description : AM and FM are examplesof ________ conversion. A) digital-to-digital B) digital-to-analog C) analog-to-analog D) analog-to-digita
Last Answer : analog-to-analog
Description : __________ conversion involves three techniques: line coding,block coding, and scrambling. A) Analog-to-digital B) Digital-to-analog C) Analog-to-analog D) Digital-to-digital
Last Answer : Digital-to-digital
Description : PCM is an example of _______ conversion. A) digital-to-digital B) digital-to-analog C) analog-to-analog D) analog-to-digital
Last Answer : analog-to-digital
Description : State working principle of analog to digital and digital to analog conversion.
Last Answer : i) Analog-to-digital Converters: In a digital computer control system, the plant output (or controlled variable) is usually an analog signal, which is measured by sensors (or instruments). This ... that provides an output voltage or current normalized to a full-scale (FS) reference value.
Description : Process of conversion low voltage to high voltage is called _______ (a) Rectification (b)forward bias (c) reverse bias (d) amplification
Last Answer : (d) amplification
Description : The process of conversion of AC into DC is called (a) Amplification (b) rectification (c) purification (d)magnification
Last Answer : (b) rectification
Description : The transformation matrix required for conversion of CMY colour model to RGB colour model is given as
Last Answer : Answer: C
Description : What steps shall be required to rotate an object about the point P1 (as shown in fig.1) and its placement such that what was at P1 is now reduced and is at P2 (as shown in fig.2). I. Translate P1 to origin II. ... (A) I,II and III (B) II,III and IV (C) I,III and IV (D) All of the above
Last Answer : Answer: Marks given to all
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 : Which of the following steps are required to design a questionnaire? (a) Writing primary and secondary aims of the study. (b) Review of the current literature. (c) Prepare a draft of questionnaire. (d) Revision of the draft. Select the ... (b) and (c) (C) (a), (c) and (d) (D) (b), (c) and (d)
Last Answer : Answer: A
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 : Which of the following set of statements reflects the basic characteristics of teaching ? Select the correct alternative from the codes : (i) Teaching is the same as training. (ii) There is no difference between instruction and conditioning ... (vi) (C) (ii), (iii) and (v) (D) (i), (iv) and (vi)
Last Answer : Answer: B
Description : Which performance parameter is the minimum amount of optical power required to achieve a specific bit-error rate (BER) in digital systems or a given signal-to-noise ratio (SNR) in analog systems?
Last Answer : Receiver sensitivity.
Description : Which of the following statements is NOT correct ? (A) Computer is capable of processing only digital signal (B) Computer is capable of analysing both quantitative and qualitative data (C) Appropriate ... for processing the data (D) Computer is capable of processing digital as well as analog signals
Description : Compare analog instrument to digital instrument on the basis of accuracy, resolution, power required and portability.
Last Answer : Comparison between Analog instruments & Digital instruments:
Description : The number of comparators required in a 3-bit comparator type analog to digital converter is A) 2 B) 3 C) 7 D) 8
Last Answer : Number of comparators =2^n -1= 2^3 -1=7
Description : Which of the following statements regarding the features of the objectoriented approach to databases are true ? (a) The ability to develop more realistic models of the real world. (b) The ability to represent the world in a non-geometric way. ( ... ) and (d) (C) (a), (d) and (e) (D) (c), (d) and (e)
Last Answer : (A) (a), (b) and (c)
Description : Consider the following conditions : (a) The solution must be feasible, i.e. it must satisfy all the supply and demand constraints. (b) The number of positive allocations must be equal to m+n-1, where m is the number of rows and n is ... B) (a) and (c) only (C) (b) and (c) only (D) (a), (b) and (c)
Last Answer : (D) (a), (b) and (c)
Description : In RSA public key cryptosystem suppose n=p*q where p and q are primes. (e,n) and (d,n) are public and private keys respectively. Let M be an integer such that 0
Last Answer : (2) I and III
Description : Describe logarithmic conversion signal conditioning in DAS.
Last Answer : Explanation : It is a signal conditioning method applicable with DAS. The logarithmic conversion circuit enables the measurement of fractional change in the input as a percentage of the input magnitude rather than a percentage of range. It improves the resolution
Description : A data file of 1,00,000 characters contains only the characters g-l, with the frequencies as indicated in table: using the variable-length code by Huffman codes, the file can be encoded with (A) 2,52,000 bits (B) 2,64,000 bits (C) 2,46,000 bits (D) 2,24,000 bits
Last Answer : (D) 2,24,000 bits
Description : Which one of the following describes the syntax of prolog program ? I. Rules and facts are terminated by full stop (.) II. Rules and facts are terminated by semicolon (;) III. Variables names must start with upper case alphabets. ... alphabets. Codes : (A) I, II (B) III, IV (C) I, III (D) II, IV
Last Answer : (C) I, III
Description : Which of the following is/are the components of a CRT ? (a) Electron Gun (b) Control Electrode (c) Focusing Electrode (d) Phosphor Coated Screen Codes : (A) (a) and (d) (B) (a), (b) and (d) (C) (a), (b), (c) and (d) (D) (a), (c) and (d)
Last Answer : (C) (a), (b), (c) and (d)
Description : Which of the following is/are the principle components of a memorytube display ? (a) Flooding gun (b) Collector (c) Phosphorus grains (d) Ground Codes : (A) (a) and (b) (B) (c) only (C) (d) only (D) All the above
Last Answer : (D) All the above
Description : Which of the following is/are correct with reference to Abstract class and interface ? (a) A class can inherit only one Abstract class but may inherit several interfaces. (b) An Abstract class can provide complete and default ... true (C) Both (a) and (b) are true (D) Neither (a) nor (b) is true
Description : Which of the following statements are true with reference to the way of describing XML data ? (a) XML uses DTD to describe the data (b) XML uses XSL to describe the data (c) XML uses a description node to describe the data Codes : (A) (a) only (B) (b) only (C) (a) and (b) (D) (a) and (c)
Last Answer : Answer: D
Description : Javascript and Java has similar name because ........... is/are true. (a) Javascripts syntax is loosely based on Java's syntax (b) Javascript is stripped down version of Java (c) Java and Javascript are originated from Island of Java ... only (B) (a), (b) and (c) (C) (a) and (b) (D) (a) and (c)
Description : Which of the following graphic primitives are considered as the basic building blocks of computer graphics ? (a) Points (b) Lines (c) Polylines (d) Polygons Codes : (A) (a) only (B) (a) and (b) (C) (a), (b) and (c) (D) (a), (b), (c) and (d)
Description : What will be the hexadecimal value in the register ax (32-bit) after executing the following instructions? Mov al, 15 Mov ah, 15 Xor al, al Mov cl, 3 Shr ax, cl Codes: (A) 0F00 h (B) 0F0F h (C) 01E0 h (D) FFFF h
Last Answer : (C) 01E0 h
Description : Which of the following property/ies a Group G must hold, in order to be an Abelian group? (a) The distributive property (b) The commutative property (c) The symmetric property Codes: (A) (a) and (b) (B) (b) and (c) (C) (a) only (D) (b) only
Description : Which of the following arguments are not valid? (a) If Gora gets the job and works hard, then he will be promoted. If Gora gets promotion, then he will be happy. He will not be happy, therefore, either he will not get the job or he ... and (c) (B) (b) and (c) (C) (a), (b) and (c) (D) (a) and (b)
Last Answer : Answer: B Explanation: (a) P: Gora gets the job Q: Gora works hard R: Gora gets promotion S: Gora will be happy The argument can bet written as (P˄Q)→R R→S ¬S ... also be written as: ((P˅Q)˄¬P)→Q where P, and Q are propositions expressed in some formal system.
Description : Which of the following statement(s) is/are false? (a) A connected multigraph has an Euler Circuit if and only if each of its vertices has even degree. (b) A connected multigraph has an Euler Path but not an Euler Circuit if and only ... Codes: (A) (a) only (B) (b) and (c) (C) (c) only (D) (d) only
Last Answer : (D) (d) only
Description : Which of the following is used for the boundary representation of an image object? (A) Quad Tree (B) Projections (C) Run length coding (D) Chain codes
Last Answer : (D) Chain codes
Description : Match the following types of variables with the corresponding programming languages: (a) Static variables (i) Local variables in Pascal (b) Stack dynamic (ii) All variables in APL (c) Explicit heap dynamic (iii) Fortran 77 (d) Implicit ... (ii) (C) (iii) (i) (iv) (ii) (D) (ii) (i) (iii) (iv)
Last Answer : (C) (iii) (i) (iv) (ii)
Description : Which of the following is not an analog-to-analog conversion? A) AM B) PM C) FM D) QAM
Last Answer : QAM
Description : The change in value of an analog signal during the conversion process produces what is called the : - a) quantization error b) resolution error c) Nyquist error d) sampling error
Last Answer : The change in value of an analog signal during the conversion process produces what is called the : - quantization error.