Description : Environmental damage to magnetic tape can occur when the tape is stored in an area that exceeds what ideal temperature and humidity ranges?
Last Answer : Ideally, use and store tape at 60 to 80º F and at 40 to 60% relative humidity.
Description : What six types of environmental damage can occur to tapes in storage when the ideal temperature and humidity ranges are exceeded?
Last Answer : Tape deformation, oxide shedding, head-to-tape sticking, layer to-layer sticking, dirt build-up, and excessive tape and head wear.
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 : When the relative humidity is below 10%, what happens to magnetic tape and parts of a tape recorder that could cause environmental damage?
Last Answer : Dirt build-up caused by static electricity.
Description : After using a tape that was stored in an area where temperatures exceeded 130º F you notice pieces of oxide sticking to the recorder's tape-transport mechanism, to its magnetic heads, and onto the tape. What is the probable cause of these symptoms?
Last Answer : Oxide shedding. At temperatures above 130º F, oxide coating becomes soft and sheds.
Description : You notice steps in the tape pack such as those in figure 2-3. What causes this and how does it damage the magnetic tape?
Last Answer : Pack slip. It's caused by loosely wound tape on a reel that is exposed to excessive vibration or heat. The vibration or heat causes the tape to shift, causing steps in the tape pack. The uneven tape will then rub against the reel's sides and the recorder's tape guides.
Description : List four rules you should follow when storing magnetic tape to protect it from damage.
Last Answer : a. Make sure the tape is wound properly on the reel hub, b. store tapes vertically, c. keep storage area at right temperature and humidity, d. store away from equipment that generates stray magnetic fields.
Description : Perforated paper used as input of output media is known as A) paper tapes B) magnetic tape C) punched papers tape D) card punch
Last Answer : Answer : A
Description : perforated paper used as input of output media is known as a. paper tapes b. magnetic tape c. punched papers tape d. card punch
Last Answer : paper tapes
Last Answer : a. paper tapes
Description : When magnetic tapes are ruined, what three factors are normally the cause?
Last Answer : Poor handling, improper storage, or shipping damage.
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 : 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 : 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 : 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 : . 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 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 : A hazard: A) is a potentially damaging physical event, phenomenon, or human activity B) may cause the loss of life or injury, property damage, C) may generate social and economic disruption or environmental degradation. D) all of the above
Last Answer : D) all of the above
Description : If you have 45 to spend at the music store. Each cassette tape costs 5 and each CD costs 12. Write a linear inequality that represents this situation. Let x represent the number of tapes and y the num?
Last Answer : You have $45 to spend at the music store. Each cassette tape costs $5 and each CD costs $12. Write a linear inequality that represents this situation. Let x represent the number of tapes and y the number of CDs.
Description : The substance coated on plastic tape recorder tapes is (a) zinc oxide (b) magnesium oxide (c) iron sulphate (d) iron oxide
Last Answer : Ans:(d)
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 : Which of the eight methods for encoding digital data onto magnetic tape is most widely used because it’s accurate, simple, and reliable?
Last Answer : Non-return-to-zero (NRZ) encoding.
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 : 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 equipment should you use to de-magnetize a magnetic tape transport?
Last Answer : A hand-held degausser.
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 : What number harmonic is the primary harmonic distortion in magnetic tape recorders?
Last Answer : Third-order harmonic.
Description : List four factors that can degrade the frequency response of magnetic tape recorders.
Last Answer : a. A too-high or too-low bias signal level setting for the record head. b. An improper reproduce head gap. c. An improper tape transport speed. d. Poor tape-to-head contact.
Description : Magnetic tape recorders can have up to three different heads installed. What are the three functions performed by a recorder's heads?
Last Answer : Record, reproduce, and erase.
Description : What is the correct way to hold a magnetic tape reel?
Last Answer : Always hold reel by the hub, never by the flanges. Never touch the working tape surface.
Description : What method for erasing magnetic tape is much more effective and reliable than using a recorder’s erase head?
Last Answer : Using a magnetic tape degausser
Description : What type of magnetic tape is used to record computer programs and data, and what are the additional thickness and quality standards for this type of tape?
Last Answer : digital magnetic tape is for computer programs and data. Its base material is about 50% thicker. The tape’s surface must not have blemishes or coating flaws because losing even one digital data bit could ruin the recorded computer program or data.
Description : Why is plastic magnetic tape used more than metal tape?
Last Answer : Plastic tape is used more than metal because it’s more flexible, resists mildew and fungus, and is very stable at high temperatures and humidity.
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.
Description : What are the major differences between magnetic tape units?
Last Answer : The speed at which the tape is moved past the read/write head and the density of the recorded information.
Description : What is the purpose of any magnetic tape unit?
Last Answer : To write data on or read data from a magnetic tape.
Description : Digital magnetic tape recorders used to store and retrieve digital data fall into what three categories?
Last Answer : a. Computer-compatible digital tape recorders. b. Telemetry digital tape recorders. c. Instrumentation digital tape recorders
Description : Which digital data tape encoding method presets the magnetic tape to all zeros and then records digital ones onto the tape?
Last Answer : Return-to-bias (RB) encoding.
Description : What three formats are used for digital magnetic tape recording?
Last Answer : 1) Serial, (2) parallel, and (3) serial-parallel.
Description : Punched cards, paper tape, and magnetic tape use what storage access method?
Last Answer : Sequential-access.
Description : Which is the state with maximum area of unusable land
Last Answer : Rajasthan
Description : When does most printed circuit board damage occur?
Last Answer : During disassembly or repair.
Description : Tommy leaves the video rental shop annoyed about the small number of titles that were available for rent. His attitude is due to the actual number of tapes in the store and: A)his satisfaction with ... there to help. D)his service expectations. E)the average number of available titles at all stores.
Last Answer : D)his service expectations.
Description : Some tapes you are using may have level errors. What does this mean and what is the cause?
Last Answer : The actual output signal level of the tape exceeds the manufacturer’s specified range for the output signal level (+ / - 10%). It’s caused by an uneven oxide coating on the tape due to worn tape or defective manufacture.
Description : 'Green Accounting' means measuring the National Income of the country taking into account estimation of – (1) the total forest area of the country (2) the destruction of forest cover of the country (3) pollution and environmental damage (4) area of reclaimed fallow land
Last Answer : (3) pollution and environmental damage Explanation: Green accounting is a type of accounting that attempts to factor environmental costs into the financial results of operations. It ... ignores the environment and therefore decisionmakers need a revised model that incorporates green accounting.