Description : What are the three most commonly used tape reeling systems?
Last Answer : a. Take-up control. b. Two-motor reeling. c. Tape buffering.
Description : How do the tape guides on a tape reeling system protect the tape from damage during operation?
Last Answer : They keep the tape straight with respect to both the supply and take-up reels and the magnetic heads.
Description : What type of reeling system best controls a tape recorder's tape tension during starts and stops?
Last Answer : A tape buffering reeling system
Description : What are two advantages of a two-motor reeling system over a take-up control reeling system?
Last Answer : The two-motor configuration runs in both directions and a holdback voltage helps control tape tension, but it does not properly control tape tension during starts and stops.
Description : What are two disadvantages of the take-up control reeling system?
Last Answer : a. It only works in one direction. b. The tape tension varies as the supply reel unwinds, which can cause damage during starts and stops.
Description : What are four types of tape errors that can degrade a magnetic recording system’s performance?
Last Answer : Signal dropout, noise, skew, and level. Dropout is the most common.
Description : What are the four basic parts of a magnetic tape recorder's tape transport system?
Last Answer : a. Tape reeling system. b. Tape speed control system. c. Electronic subsystem. d. Basic enclosure.
Description : Magnetic tape is made of what three basic materials?
Last Answer : a. Base material. b. Coating of magnetic oxide particles. c. Glue that bonds the particles to the base.
Last Answer : The process by which the filament is lifted from the cocoon is called reeling.
Description : There are two types of tape transport configurations, open loop capstan drive and closed-loop capstan drive. What are two major disadvantages of open-loop capstan drive tape transports?
Last Answer : a. Only operates in one direction. b. The tape tension and head-to-tape contact can vary.
Description : What two types of record and reproduce electronics are used by magnetic tape recorders?
Last Answer : . a. Direct record (AM). b. Frequency modulation (FM).
Description : Your activity stores its magnetic tape in an area where the temperature is 100º F. What two types of environmental damage could occur that would make these tapes unusable?
Last Answer : Head-to-tape sticking and layer-to-layer adhesion
Description : Which of the two types of magnetic tape is used to record audio and instrumentation type signals in the VLF to 2.5MHz frequency range?
Last Answer : Analog magnetic tape.
Description : Tape winding errors can cause a deformed tape pack. What are four common types of tape pack deformation?
Last Answer : Cinching, pack slip, spoking, and windowing.
Description : If magnetic tape is stored in areas with temperature and humidity extremes, what are three types of tape damage that may occur?
Last Answer : Oxide shedding, layer-to-layer sticking, and tape deformation.
Description : You see a build-up of dust and lint on the take-up reel of a tape recorder. This can cause which of the four types of tape errors?
Last Answer : Signal dropout errors and level errors. The dust and lint on the reel will eventually get onto the tape where it can get between the tape and the recorder’s heads.
Description : What are the most common types of fibrous tape?
Last Answer : Rubber-filled cloth tape and a combination of cotton cloth and rubber.
Description : In digital magnetic tape recording, the series of recorded digital pulses can represent what three types of data?
Last Answer : a. Data used by digital computers. b. Pulsed squarewave signals. c. Digitized analog waveforms.
Description : Is there an iPhone YouTube app that doesn't require buffering when replaying?
Last Answer : answer:Buffering is a good thing. Buffering is your friend. You should be happy about it. What buffering does is download a chunk of music/video, so that when you are in a situation where the ... seconds - is actually providing you a higher quality experience. learn to love it. Buffering is good.
Description : How do you get the "Loading..." or "Buffering..." images over videos that are played on video websites like youtube
Last Answer : answer:If you’re looking for a static image, you can just take a screenshot when the “Loading…” or “Buffering…” frame appears. If you’re looking for a spinner image, you can build a customized one here.
Description : What do you mean by buffering? -Technology
Last Answer : Buffering is a technique of storing data in memory area (buffer).
Description : Buffering is a ………….. management technique. -Technology
Last Answer : Buffering is a devicemanagement technique.
Description : Buffering action of haemoglobin is mainly due to its (A) Glutamine residues (B) Arginine residues (C) Histidine residues (D) Lysine residues
Last Answer : Answer : C
Description : Within the red blood cells the buffering capacity contributed by the phosphates is (A) 5% (B) 10% (C) 20% (D) 25%
Last Answer : Answer : D
Description : Amino acids excepting histidine are not good buffering agents in cell because (A) They exist as zwitter ions (B) Their pk and not in the physiological pH of a cell (C) Only Histidine has pk of its R group at 6.0 unlike the others which have at a different pH (D) None of these
Description : The greatest buffering capacity at physiologic pH would be provided by a protein rich in which of the following amino acids ? (A) Lysine (B) Histidine (C) Aspartic acid (D) Valine
Last Answer : Answer : B
Description : The following are true about cerebrospinal fluid: a. it has a greater buffering capacity than plasma b. it has a similar chloride concentration to plasma c. it is a plasma ultrafiltrate d. the rate of formation is dependent on the intraventricular pressure over the normal pressure range
Last Answer : it is a plasma ultrafiltrate
Description : The pH scale relates the measure of _______ of a chemical substance. a. ionization b. denaturation c. acidity d. buffering
Last Answer : c. acidity
Description : What is the MOST important role of saliva in preventing dental caries: A. Buffering action
Last Answer : A. Buffering action
Description : Patient presents with rapidly progressive root caries on many teeth. Which of the following laboratory results would be a possible indicator of this? A. Stimulated salivary secretion rate of 1.5ml/min B. ... of 105 organism/ml E. Salivary buffering PH 5.5 > 100000 CFU/ml high caries incidence
Last Answer : E. Salivary buffering PH 5.5
Description : An aspect of Input/Output controller of data logic is called (1) General Buffering (2) Zero Buffering (3) Buffering (4) Data Buffering
Last Answer : Buffering
Description : What types of operating systems let more than one user access the same resources at the same time?
Last Answer : Multiuser/multitasking.
Description : Which types of operating systems are the simplest and most common on microcomputers?
Last Answer : Single user/single tasking.
Description : Which types of LEDs are the preferred optical sources for short-distance, low-data-rate fiber optic systems?
Last Answer : SLEDs and ELEDs.
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 : Two tape recorders have signal-to-noise ratios (SNRs) of 25-dB RMS and 35-dB RMS respectively. Which of the SNRs can record and reproduce the widest range of input signals and why?
Last Answer : 35-dB RMS because the highest SNR can always record and reproduce the widest range of input signals.
Description : What two preventive maintenance actions must you do regularly to increase magnetic head life and to ensure good tape recording and playback?
Last Answer : a. Keep the heads clean. b. Keep the heads demagnetized.
Description : What are two disadvantages of using a recorder’s erase head to erase data recorded on a magnetic tape?
Last Answer : Using an erase head is slow, and it may not completely erase the tape.
Description : What are signal dropouts, and what are two tape defects that can cause signal dropouts?
Last Answer : Dropouts are temporary, sharp drops (50% or more) in signal strength. They’re caused by contaminates that lift the tape away from the magnetic
Description : Which digital data encoding method helps overcome a tape recorder’s low-frequency response problems by recording two logic levels for each incoming data bit?
Last Answer : Bi-phase level encoding.
Description : What amount of flat tape or round cord is required to single lace a group of conductors?
Last Answer : Two and one-half times the length of the longest conductor in the group.
Description : Why is flat tape preferred instead of round cord when wire bundles are laced?
Last Answer : Round cord has a tendency to cut into the wire insulation.
Description : Why is friction tape used in splicing?
Last Answer : As a protective covering over the rubber tape.
Description : What equipment should you use to de-magnetize a magnetic tape transport?
Last Answer : A hand-held degausser.
Description : When cleaning the parts of a tape transport, why should you switch lint-free cloths and swabs often?
Last Answer : You may transfer dirt or oxide particles from one part of the tape transport to another
Description : Sometimes it's necessary, but why should you avoid using cotton swabs when cleaning a magnetic tape transport?
Last Answer : Cotton swabs are not lint free.
Description : How do dual-motor dual capstan drives maintain a constant tape tension while operating in either a forward or reverse direction?
Last Answer : Each capstan is driven by its own motor. It maintains tape tension by slowing down one of the motors. When the tape motion is reversed, the opposite motor is slowed down.
Description : . How do tape transports with differential velocity capstans maintain a constant tape tension in the area around the magnetic heads?
Last Answer : The supply capstan is slightly larger than the take-up capstan. This causes the take-up capstan to pull the tape slightly faster than the supply capstan feeds the tape.
Description : How do closed-loop capstan drive tape transports overcome the disadvantages of the open-loop drive design?
Last Answer : Closed loop capstan drive transports use more than one capstan to clamp the tape in the area around the magnetic head.
Description : How do worn or sticking tape transport guides cause dynamic skew on a multi-track recorder?
Last Answer : The tape drifts past the multi-track head at an angle.