A 4-bit R/2R digital-to-analog (DAC) converter has a reference of 5 volts. 3.125 V is the analog output for the input code 1010.
Description : Digital to Analog Converter (DAC)
Last Answer : Digital to Analog Converter (DAC) Digital means binary (1 0) and 1 and 0 may be true and false or on and off or high and low. Analog means continuous signal or information ... wave. Phase Shift Keying (PSK) is transmit digital data by changing the phase of carrier wave.
Description : An eight bit digital data 10101100 is fed to an ADC. The reference voltage is +10V. The analog output voltage will be: (1) 1.05V (2) 6.74V (3) 10.10V (4) 5.15V
Last Answer : An eight bit digital data 10101100 is fed to an ADC. The reference voltage is +10V. The analog output voltage will be: 6.74V.
Description : What is a Digital-to-Analog Converter (DAC) in Arduino?
Last Answer : A Digital-to-Analog Converter (DAC) in Arduino is a component that converts digital signals into analog signals, such as to control the output voltage to a motor or a speaker.
Description : In an R-2R ladder D/A converter, the input resistance is 1. Not same for all digital inputs 2. R for each input 3. 2R for each input 4. 3R for each input
Last Answer : In an R-2R ladder D/A converter, the input resistance is 3R for each input
Description : What are the advantages and disadvantages of R-2R ladder DAC?
Last Answer : Advantage: • Easier to build • Number of bits can be expanded by adding more sections. Disadvantage: • More power dissipation makes heating, which in turns develops non-linearties in DAC.
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 : In a weighted-resistor digital-to-analog converter with 8-bit input, if the resistance corresponding to the MSB is 2K, what will be the resistance corresponding to the LSB? (a) 250 Ω (d) 512 KΩ (c) 256 KΩ (d) 25.5 Ω
Last Answer : In a weighted-resistor digital-to-analog converter with 8-bit input, if the resistance corresponding to the MSB is 2K, what will be the resistance corresponding to the LSB? (a) 250 Ω (d) 512 KΩ (c) 256 KΩ (d) 25.5 Ω
Description : What is Analog to Digital Converter (ADC) ?
Last Answer : Analog to Digital Converter (ADC) Analog quantity may be voltage, temperature, sound, speed, audio etc. it is information or signal. ... digital form), digital speedometer (converts analog speed into digital form) etc.
Description : With the help of a neat circuit diagram explain the working principle of Digital to Analog converters.(DAC)
Last Answer : Digital-to-Analog Converters: D/A conversion is the process of converting a value represented in digital code such as binary or BCD into a voltage or current which is proportional ... total of input voltage levels which represents the equivalent analog signals of the 4-bit digital input.
Description : What is an Analog-to-Digital Converter (ADC) in Arduino?
Last Answer : An Analog-to-Digital Converter (ADC) in Arduino is a component that converts analog signals, such as temperature or light, into digital signals that can be processed by the microcontroller.
Description : In a synchronous modem, the digital-to-analog converter transmits signal to the a. equilizer b. modulator c. demodulator d. terminal e. none of aobve
Last Answer : equilizer
Description : It is the ratio of the largest possible magnitude to the smallest possible magnitude that can be decoded by the digital-to-analog converter in the receiver.
Last Answer : Dynamic range
Description : A weighted resistor digital to analog converter using N bits requires a total of (A) N precision resistors. (B) 2N precision resistors. (C) N + 1 precision resistors. (D) N – 1 precision resistors.
Last Answer : (A) N precision resistors.
Description : The conversation speed of an analog to digital converter is maximum with the following technique. (A) Dual slope AD converter. (B) Serial comparator AD converter. (C) Successive approximation AD converter. (D) Parallel comparator AD converter.
Last Answer : (D) Parallel comparator AD converter.
Description : A digital voltmeter uses an A/D converter which needs a start pulse, uses an analog comparator and has a relatively fixed conversion time independent of the applied voltage. The A/D ... Successive Approximation Converter .b) Digital Ramp Converter c) Digital Slope Converter d) All the above
Last Answer : A digital voltmeter uses an A/D converter which needs a start pulse, uses an analog comparator and has a relatively fixed conversion time independent of the applied voltage. The A/D converter is : - Successive Approximation Converter
Last Answer : A 12 bit counter type A/D converter uses a 1 MHz clock. If the full scale output is +10V, its resolution output is 2.44mV.
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 : 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 : 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
Last Answer : Dual slope integration type analog to digital converter provide Very good accuracy without putting extreme requirements on component stability and Good rejection of power supply hum
Description : One method of troubleshooting digital circuits in a console is to ___________. A. supply alternate logic levels at the input(s) and test for change of state conditions at the output B. ground all ... output D. vary each input smoothly from 0-10 volts and test for similar variance at the output
Last Answer : Answer: A
Description : In analog computer A) Input is first converted to digital form B) Input is never converted to digital form C) Output is displayed in digital form D) All of the above
Last Answer : Answer : B
Description : In analog computer a. Input is first converted to digital form b. Input is never converted to digital form c. Output is displayed in digital form d. All of above
Last Answer : All of above
Last Answer : b. Input is never converted to digital form
Description : If the 'E/P converter' shown in the illustration operated on a range of 1-9 volts and 6-30 PSI, a 5 volt input would yield ______________. EL-0096 A. 9 PSI B. 15 PSI C. 18 PSI D. 24 PSI
Last Answer : Answer: C
Description : In the circuit diagram,heat produces in R, 2R and `1.5 R` are in the ratio of
Last Answer : In the circuit diagram,heat produces in R, 2R and `1.5 R` are in the ratio of A. `4:2:3` B. `8:4:27` C. `2:4:3` D. `27:8:4`
Description : . In case of turbulent flow of fluid through a circular pipe, the (A) Mean flow velocity is about 0.5 times the maximum velocity (B) Velocity profile becomes flatter and flatter with ... , shear stresses, random orientation of fluid particles and slope of velocity profile at the wall are more
Last Answer : (D) Skin friction drag, shear stresses, random orientation of fluid particles and slope of velocity profile at the wall are more
Description : Pin #8 of the astern valve position sensor shown in the illustration is connected _______________. EL-0099 A. to analog common B. in series with PCOM C. to (-) 50 volts D.C. D. to (+) 50 volts D.C.
Description : Pin #6 of the ahead valve position sensor as shown in the illustration is connected _______________. EL-0099 A. to (-) 50 volts D.C. B. in parallel with PCOM C. to (+) 50 volts D.C. D. to analog common
Description : How do I hook up my television analog converter?
Last Answer : The 3 cords you hooked up, I assume are your A/V cords (red, white, yellow). Make sure your TV is turned to your A/V input.
Description : Centroid of the are of circle shown in adjacement figure is a.r sin (?/2)/2 ?, 0 b.r sin (?)/?, 0 c.2 r sin (?/2)/?, 0 d.107 dynes e.2r sin (?)/?, 0
Last Answer : c. 2 r sin (?/2)/?, 0
Description : If `(2p+5q)/(2r+5s) = (4p-3q)/(4r-3s)`, then find the relation between p, q, r and s.
Last Answer : If `(2p+5q)/(2r+5s) = (4p-3q)/(4r-3s)`, then find the relation between p, q, r and s.
Description : If r is the radius of a circle and d is its diameter is an equivalent formula for the circumference C 2r?
Last Answer : Circumference of a circle: 2*pi*radius or diameter*pi
Description : Weight of a person at a height of 2R from the centre of the earth, where R is the radius of the earth- (1) remains same (2) becomes half (3) becomes twice (4) becomes one-fourth
Last Answer : (4) becomes one-fourth Explanation: The gravitational force is proportional to 1/R2, where R is the distance from the centre of the Earth. So at a height of 2R from the centre of the earth, the corresponding weight would be one-fourth of the original weight.
Description : If a wire of resistance R is melted and recast to half of its length, then the new resistance of the wire will be - (1) R/4 (2) R/2 (3) R (4) 2R
Last Answer : (1) R/4
Description : A centrifugal filtration unit operating at a rotational speed of w has inner surface of the liquid (density ρL) located at a radial distance R from the axis of rotation. The thickness of the liquid film is δ and no cake is formed. The ... . ρL (C) ½w 2 . δρL (2R + δ) (D) ½w 2 . R . ρL(R + 2δ)
Last Answer : (C) ½w 2 . δρL (2R + δ)
Description : Velocity of escape is equal to A. r √(2g); where r: radius of Earth or any other planet for that matter, g: gravitational field strength B. g √(2r); where r: radius of ... (2gr); where r: radius of Earth or any other planet for that matter, g: gravitational field strength
Last Answer : √(2gr); where r: radius of Earth or any other planet for that matter, g: gravitational field strength
Description : Heat produced when a steady state current, I passes through an electrical conductor having resistance, 'R' is (A) IR (B) I 2R (C) IR 2 (D) I 2R
Last Answer : (B) I 2R
Description : The radius of Gyration (k) for Rim Type Flywheel having radius ‘r’ is given by 1. k = 2r 2. k = r/2 3. k = r 4. k = r/3
Last Answer : 3. k = r
Description : The approximate formula for radial or perpendicular offsets from the tangent, is (A) x/2R (B) x²/2R (C) x/R (D) x²/R
Last Answer : (B) x²/2R
Description : The degree of kinematic indeterminacy of a pin-jointed space frame is (A) 2j - r (B) 3j - r (C) j - 2r (D) j - 3r Where j is number of joints and r is reaction components
Last Answer : (B) 3j - r
Description : Degree of kinematic indeterminacy of a pin-jointed plane frame is given by (A) 2j - r (B) j - 2r (C) 3j - r (D) 2j + r
Last Answer : (A) 2j - r
Description : The centre of percussion of a solid cylinder of radius r resting on a horizontal plane will be (A) r/2 (B) 2r/3 (C) r/A (D) 3r/2
Last Answer : (D) 3r/2
Description : If T and R are tread and rise respectively of a stair, then (A) 2R + T = 60 (B) R + 2T = 60 (C) 2R + T = 30 (D) R + 2T = 30
Last Answer : Answer: Option A
Description : The difference of pressure between the inside and outside of a liquid drop is (A) p = T × r (B) p = T/r (C) p = T/2r (D) p = 2T/r
Last Answer : Answer: Option D
Description : If L is the length of a moving vehicle and R is the radius of curve, the extra mechanical width b to be provided on horizontal curves, (A) L/R (B) L/2R (C) L²/2R (D) L/3R
Last Answer : Answer: Option C