Description : Noise consisting of irregular pulses of short duration and relatively high amplitude, A. Quantizing noise B. Tone interference C. Impulse noise D. Cross talk
Last Answer : C. Impulse noise
Last Answer : A. Quantizing noise
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 : Is the interference coming from other communications channels? A. Jitter B. Crosstalk C. RFI D. EMI
Last Answer : B. Crosstalk
Description : The first laser emitted a. Pulses of 694 nm red light b. A continuous red beam c. Pulses of white light from a helical flashlamp d. Spontaneous emission
Last Answer : a. Pulses of 694 nm red light
Description : Digital transmission provides a higher level of signal quality than analog transmission because A. repeaters regenerate digital pulses and remove distorstion B. digital signals are easier to sample than ... and cannot easily be distorted D. analog signals are continuous and not easily distorted.
Last Answer : A. repeaters regenerate digital pulses and remove distorstion
Description : What noise is a transient short-duration disturbance distributed essentially uniformly over the useful passband of a transmission system? A. Flicker noise B. Transit-time noise C. Shot noise D. Impulse noise
Last Answer : D. Impulse noise
Description : What is the duration of singing the national anthem? -General Knowledge
Last Answer : answer:
Description : What is the term used in telephony and telegraphy for irregular disturbing radiation due to various causes and in a particular produced by arc transmitters causing a rushing sound in receiving telephones? A. Fax tone B. Mush C. Hiss D. Crosstalk
Last Answer : B. Mush
Description : Pulses fit well in cropping system as they are— (A) Short duration crops (B) Disease resistant crops (C) Long duration crops (D) Moisture stress resistant crops
Last Answer : (D) Moisture stress resistant crops
Description : Modulation in which no signal is present between pulses A. Pulse modulation B. QAM C. PSK D. FSK
Last Answer : A. Pulse modulation
Description : The series of periodically recurrent pulses is modulated in amplitude by the corresponding instantaneous samples. A. PFM B. PWM C. PDM D. PAM
Last Answer : D. PAM
Description : Modulation means A. Varying of information B. Utilization of a single transmission channel to carry multiple signals C. Varying of some parameters of a carrier such as its amplitude to transmit information D. Transmit pulses in DC form on a copper wire
Last Answer : C. Varying of some parameters of a carrier such as its amplitude to transmit information
Description : Which of the following is not a baseband signal modulation? A. RF carrier B. Video System C. Audio signal D. Binary coded pulses
Last Answer : A. RF carrier
Description : How would one squeeze more channels of communication into TDM frames of standard length? A. Shorten the time delay for each channel B. Raise the amplitude C. Add modulators D. Remove the synchronizing pulses
Last Answer : A. Shorten the time delay for each channel
Description : In computer networks _________ is a characteristic that a flow needs where Lack of it means losing a packet or acknowledgment, which entails retransmission. A. Reliability B. Delay C. Jitter D. Bandwidth
Last Answer : A. Reliability
Description : Why is it important to minimize TBE jitter in magnetic tape recordings where precise timing relationships exist between two or more signals?
Last Answer : The jitter could cause noise and a loss of accuracy.
Description : nif stands for A. Non-intrinsic figure B. Noise improvement factor C. Narrow intermediate frequency D. Noise interference figure
Last Answer : B. Noise improvement factor
Description : Nif stands for A. Narrow intermediate frequency B. Noise interference figure C. Noise improvement factor D. Non-intrinsic fugure
Last Answer : C. Noise improvement factor
Description : Analog computer works on the supply of A) Continuous electrical pulses B) Electrical pulses but not continuous C) Magnetic strength D) None of the above
Last Answer : Answer : A
Description : Analog computer works on the supply of a. Continuous electrical pulses b. Electrical pulses but not continuous c. Magnetic strength d. None of the above
Last Answer : Continuous electrical pulses
Description : The first laser emitted ∙ a. Pulses of 694 nm red light ∙ b. A continuous red beam ∙ c. Pulses of white light from a helical flash lamp ∙ d. Spontaneous emission
Last Answer : ∙ a. Pulses of 694 nm red light
Last Answer : a. Continuous electrical pulses
Description : Refers to the duration occupancy period of call during its use. A. Occupancy period B. Traffic time C. Use time D. Holding time
Last Answer : D. Holding time
Description : What do you call the phenomenon in digital circuits that describe the duration of time a digital signal passes a circuit? A. Transmission time B. Elapsed time C. Propagation delay D. Travel delay
Last Answer : C. Propagation delay
Description : ______ is the time duration for one horizontal trace. A. 48µs B. 52 µs C. 62 µs D. 50 µs
Last Answer : B. 52 µs
Description : ECE Board Exam March 1996 One type of pulse communications system uses pulse that appear as a group, and which vary in number according to the loudness of the voice. This type of ... A. pulse duration modulation B. pulse amplitude modulation C. pulse code modulation D. pulse position modulation
Last Answer : A. pulse duration modulation
Description : Noise at the input to the receiver can be as high as several A. microvolts B. milivolts C. volts D. kilo volts
Last Answer : A. microvolts
Description : Which of the following is not a source of industrial noise? A. Automobile ignition B. Sun C. Electric Motors D. Leakage from high voltage line
Last Answer : B. Sun
Description : Deemphasis in the receiver in effect attenuates modulating signal components and noise in what frequency range? A. dc B. low C. intermediate D. high
Last Answer : D. high
Description : What causes image interference? A. Low gain B. High IF C. Poor front-end selectivity D. Low signal-to-noise ratio
Last Answer : C. Poor front-end selectivity
Description : A major and basic advantage for the use of a klystron. A. High power B. Efficiency C. Lesser noise D. Cheaper
Last Answer : A. High power
Description : Do you ever use Google Streetview to go wander around the old neighborhood?
Last Answer : Re: your last tag, don’t you know You Can’t Go Home Again! And to answer the question, the farm that I grew up on is underwater now but only 12 miles away from where I live now.
Description : Did your children wander away when they were little?
Last Answer : answer:I wandered off a few times as a kid. Just to visit friends. Ian’s never done that. Of course, there are no kids in the neighborhood for him to visit.
Description : You're looking for your lost cat, after dark: do you just wander into someone's backyard with your flashlights or do knock on the door and maybe ask for permission?
Last Answer : It depends on how late it is. After dark can mean anywhere from eight at night to four in the morning. If it’s the latter, then just wait until morning. If it’s the former, knock on the door and ask if you can search.
Description : I am mother and father, but never birth or nurse. I'm rarely still, but I never wander.What am I? -Riddles
Last Answer : I am a tree.
Description : What effects does wander-thirst have on the speaker?
Last Answer : etymology, orthography, phonic qualities, connotations, ambiguous meanings, usage, and so on make them unique
Description : What scientific method uses observation and what other process to wander questions?
Last Answer : Feel Free to Answer
Description : As' Author' is related to 'Writing', similarly 'Thief is related to what? (A) To night(B) To feel(C) To steal(D) To wander(E) None of these
Last Answer : C) To steal
Description : Why was it a bad time to wander about in London without clothes? (a) it was a rainy season (b) it was very hot (c) it was bitterly cold (d) none of the above
Last Answer : (c) it was bitterly cold
Description : What type of transmission is radiated from an aircraft’s radio altimeter antenna? A. An amplitude modulated continuous wave B. A pulse position modulated UHF signal C. A differential phase shift keyed UHF signal D. A frequency modulated continuous wave
Last Answer : D. A frequency modulated continuous wave
Description : Refers to a continuous tone generated in a local exchange terminal through a combination of two frequencies 350 Hz, and 440 Hz. A. Busy tone B. Call waiting tone C. Dial tone D. Standard tone
Last Answer : B. Call waiting tone
Description : Modulation in which the modulated wave is always present. A. Carrier modulation B. Front-end C. Continuous modulation D. Log-periodic modulation
Last Answer : C. Continuous modulation
Description : The intensity ratio of waves is 25:9. What is the ratio of their amplitudes? (1) 50 : 18 (2) 25 : 9 (3) 3 : 5 (4) 5 : 3
Last Answer : (4) 5 : 3
Description : When the torsional pendulum vibrating the observed amplitudes on the same side of neutral axis for successive cycles are found to decay 50% of the initial value determine logarithmic decrement. A 0.065 B 0.006 C 0.693 D 0.5
Last Answer : C 0.693
Description : When the torsional pendulum vibrating, the observed amplitudes on the same side of the neutral axis for successive cycles are found to decay 50% of the initial value determine logarithmic decrement. A 0.065 B 0.006 C 0.693 D 0.5
Description : The relative amplitudes of different degrees of freedom in a two-degree-of-freedom system depend on the natural frequency.
Last Answer : True
Description : In_____ transmission, thecarrier signal is modulated so that its amplitude varies with the changing amplitudes of the modulating signal. A) AM B) PM C) FM D) none of the above
Last Answer : AM
Description : The resultant electric field of two components in the x and y direction having amplitudes 6 and 8 respectively is a) 100 b) 36 c) 64 d) 10
Last Answer : d) 10
Description : The coherence length over which there is a strong relationship between amplitudes is; (A) Directly proportional to the bandwidth (B) Inversely proportional to the bandwidth (C) The square of the bandwidth (D) None of these
Last Answer : Answer: Option B