If a signal x(n)=x(–n), then it is called even signal.
Description : n-type semiconductor can be made by adding ____ to intrinsic semiconductor (A) Boron (B) Arsenic (C) Carbon (D) Germanium
Last Answer : n-type semiconductor can be made by adding Arsenic to intrinsic semiconductor
Description : If a signal band limited to fm is sampled at a rate less than 2fm, then the constructed signal will be A) Large in amplitude B) Small in amplitude C) Distorted D) Distortion less
Last Answer : If a signal band limited to fm is sampled at a rate less than 2fm, then the constructed signal will be Distorted
Description : Acute bacterial meningitis can begin with ____ that develops into a blood infection that then invades the meninges. a. N. meningitidis b. S. pneumoniae c. H. influenzae d. A-C are correct
Last Answer : d. A-C are correct
Description : The signal rate is sometimes called the ____ rate. A) baud B) bit C) signal D) none of the above
Last Answer : baud
Description : Suggest the diode material suitable to rectify 0.5V AC signal.
Last Answer : The diode material suitable to rectify 0.5V AC signal is silicon
Description : An energy signal has G(f) = 20. Its energy density spectrum is A) 20 B) 100 C) 400 D) 800
Last Answer : 400
Description : In a microwave test bench, why is the microwave signal amplitude modulated at 1 kHz? (1) To increase the sensitivity of measurement (2) To transmit the signal to a far-off place (3) To study amplitude modulation (4) Because crystal detector fails at microwave frequencies
Last Answer : In a microwave test bench, why is the microwave signal amplitude modulated at 1 kHz? Because crystal detector fails at microwave frequencies
Description : An FM signal with modulation index mƒ is passed through a frequency tripler. The modulation index of the output signal will be (1) mƒ (2) 3mƒ (3) 9mƒ (4) 27mƒ
Last Answer : An FM signal with modulation index mƒ is passed through a frequency tripler. The modulation index of the output signal will be 3mƒ
Description : Which of the following oscillators is used for generation of high frequency signal ? (a) RC phase shift oscillator (b) Blocking oscillator (c) Wein bridge oscillator (d) L-C oscillator
Last Answer : LC oscillator is used for generation of high frequency signal.
Description : Ideal transmission bandwidth of FM signal is
Last Answer : Ideal transmission bandwidth of FM signal is Infinite
Description : For FM signal, the frequency deviation
Last Answer : For FM signal, the frequency deviation Independent of the modulation frequency
Description : A 4 GHz carrier is amplitude modulated by a low-pass signal of maximum cut off frequency 1 MHz. lf this signal is to be ideally sampled, the minimum sampling frequency should be nearly
Last Answer : A 4 GHz carrier is amplitude modulated by a low-pass signal of maximum cut off frequency 1 MHz. lf this signal is to be ideally sampled, the minimum sampling frequency should be nearly 4 Ghz
Description : Minimum number of bits required to represent maximum value of given analogue signal with 0.1% accuracy is: a. 8 bits b. 9 bits c. 10 bits d. 12 bits
Last Answer : 10
Description : An energy signal has G(f) = 10. Its energy density spectrum is: (1) 10 (2) 100 (3) 50 (4) 20
Last Answer : An energy signal has G(f) = 10. Its energy density spectrum is: 100.
Description : The large signal bandwidth of an opamp is limited by its: (1) Loop gain (2) Slew rate (3) Output impedance (4) Input frequency
Last Answer : The large signal bandwidth of an opamp is limited by its: Slew rate.
Description : The input to a coherent detector is DSB-SC signal plus noise. The noise at the detector output is: (1) The in-phase component (2) The quadrature-component (3) Zero (4) The envelope
Last Answer : The input to a coherent detector is DSB-SC signal plus noise. The noise at the detector output is: Zero.
Last Answer : Which type of fading causes serious distortion of modulated signal: Selective fading.
Description : A radio signal travels ____ yards per microseconds. A. 273 B. 328 C. 618 D. 123.6
Last Answer : C. 618
Description : The CPU sends out a ____ signal to indicate that valid data is available on the data bus: a. Read b. Write c. Both A and B
Last Answer : b. Write
Description : A DT signal x(n) is defined as
Last Answer : x(n)= {2,3,4,5,6} � x(-n)={6,5,4,3, 2} � x(-n+4)={6,5,4,3,2} �
Description : TWT is basically a(n) A) Amplifier B) An oscillator C) Wideband amplifier D) Tuned amplifier
Last Answer : TWT is basically a(n) Wideband amplifier
Description : Each flip-flop in a 4-bit ripple counter introduces a maximum delay of 40 n sec. The maximum clock frequency is (a) 2.65 MHz (b) 6.25 MHz (c) 5.26 MHz (d) 6.52 MHz
Last Answer : Each flip-flop in a 4-bit ripple counter introduces a maximum delay of 40 ns. The maximum clock frequency is 6.25MHz. nff * Tdelay = 4*40 =160ns so, max. frequency = 1/ (200*10-9 ) = 6.25MHz
Description : P-N junction is A) a rectifier B) an amplifier C) an oscillator D) a coupler
Last Answer : P-N junction is a rectifier.
Description : a relational table must not contain a(n) ____. -General Knowledge
Last Answer : Relational table must not contain repeating groups.
Description : Who can answer this for me. A (n)____ is a type of nonfiction written from the first-person point of view.?
Last Answer : Can somebody pls answers this I really need it for a quiz
Description : SI unit for the surface tension is ____. (1) kg/m2 (2) kg/m3 (3) N/m (4) kg/m
Last Answer : (3) N/m Explanation: Surface tension is measured in force per unit length. Its SI unit is Newton per meter.
Description : In a multiplexed system,__ lines share thebandwidthof ____ link. A) 1; n B) 1; 1 C) n; 1 D) n; n
Last Answer : n; 1
Description : A(n) ____ language reflects the way people think mathematically. a) cross-platform programming b) 3GL business programming c) event driven programming d) functional e) None of these
Last Answer : d) functional
Description : If A `= [{:(-1, 0, 0),(0, x, 0),(0, 0, m):}]` is a scalar matrix, then x + m = ____.
Last Answer : If A `= [{:(-1, 0, 0),(0, x, 0),(0, 0, m):}]` is a scalar matrix, then x + m = ____.
Description : If `[{:(x, 0), (0, y):}] + [{:(-y, 4),(7, x):}] = [{:(4, 4), (7, 6):}]` then x = ____ and y=___.
Last Answer : If `[{:(x, 0), (0, y):}] + [{:(-y, 4),(7, x):}] = [{:(4, 4), (7, 6):}]` then x = ____ and y=___.
Description : A line through the origin intersects the parabola `5y=2x^(2)-9x+10` at two points whose x-coordinates add up to 17. Then the slope of the line is ____
Last Answer : A line through the origin intersects the parabola `5y=2x^(2)-9x+10` at two points whose x- ... 17. Then the slope of the line is __________ .
Description : If `x% " of 25 is" 2, then x="____"`
Last Answer : If `x% " of 25 is" 2, then x="____"`
Description : if noise voltage =120 mv and signal voltage = 80 v , S/N ratio in dB is?
Last Answer : Answers is the place to go to get the answers you need and to ask the questions you want
Description : The half-life of a protein depends upon its (A) Signal sequence (B) N-terminus amino acid (C) C-terminus amino acid (D) Prosthetic group
Last Answer : Answer : B
Description : The waveform of a certain signal can be studied by – (1) Spectrometer (2) Cathode ray oscilloscope (3) p - n junction diode (4) Sonometer
Last Answer : (4) Sonometer Explanation: A spectrometer is an instrument used to measure properties of light over a specific portion of the electromagnetic spectrum. Cathode ray oscilloscope is an electronic display ... electron beam that is used to produce visible patterns or graphs on a phosphorescent screen.
Description : Indicate the false statement. Noise figure is defined as A. the ratio of the S/N power supplied at the input terminal of a receiver or amplifier to the S/N power supplied to the output or ... under test, both working at the same temperature over the same bandwidth and fed from the same source
Last Answer : C. an unwanted form of energy tending to interfere with the proper and easy reception and reproduction of wanted signals
Description : Three identical circuits having 10 dB signal noise-to-noise ratio each are connected in tandem with each other, what is the overall S/N? A. 5.23 dB B. 14.77dB C. 30 dB D. 40 dB
Last Answer : A. 5.23 dB
Description : The difference between the original and reconstructed signal gives rise to A. S factor B. Quantizing noise C. S/N D. Fade margin
Last Answer : B. Quantizing noise
Description : n an inducible operon, the genes are (a) usually not expressed unless a signal turns them”on”. (b) usually expressed unless a signal turns them “off”. (c) never expressed (d) always expresser.
Last Answer : (a) usually not expressed unless a signal turns them”on”.
Description : The ______ technique expands the bandwidthof a signal by replacing each data bit with n bits. A) FDM B) DSSS C) FHSS D) TDM
Last Answer : DSSS
Description : In synchronous TDM, forn signal sources of the same data rate, eachframe contains _______ slots. A) n B) n + 1 C) n- 1 D) 0to n
Last Answer : n
Description : A(n)_________ signal is a composite analogsignal with an infinite bandwidth. A) digital B) analog C) either (a)or (b) D) neither (a) nor (b
Last Answer : digital
Description : An ______signal is the optical modulation of an STS-n (or STM-n) signal. A) OC-n B) TDM-n C) FDM-n D) none of the above
Last Answer : TDM-n
Description : The waveform of a certain signal can be studied by (1) Spectrometer (2) Cathode ray oscilloscope (3) p – n junction diode (4) Sonometer
Last Answer : Sonometer