Description : In the actuator arm assembly of a hard disk drive transport, what device can position the magnetic heads to the correct track of a hard disk more accurately than a dc stepper motor?
Last Answer : Voice coil servo.
Description : What part of a floppy disk drive transport uses a dc stepper motor to position the magnetic heads over the recording surface of a floppy disk?
Last Answer : Actuator arm assembly.
Description : How does a magnetic drum differ from a magnetic disk?
Last Answer : The tracks in which the data is stored are assigned to channels that form circular bands around the drum.
Description : What method for encoding digital data enables you to store more data in less space by limiting the distance between pulses on a hard disk?
Last Answer : Run length-limited (RLL) encoding.
Description : Older, single-sided, single-density floppy disk drives would probably use what method for encoding digital data onto the floppy disk?
Last Answer : Frequency-modulation encoding.
Description : When computers use the cylinder method to store data on a hard disk pack, what three items make up the address that tells the computer where on a specific disk to store the data?
Last Answer : . a. Cylinder number. b. Recording surface number.
Description : What three components determine the address that locates where on a floppy disk the computer will store the data?
Last Answer : a. disk side number, b. track number, and c. sector number.
Description : What type of floppy disk is made to store data on both sides of the disk
Last Answer : Double-sided.
Description : What two ways can data be physically organized on a disk pack?
Last Answer : By cylinder or sector.
Description : When the magnetic field of the inductor is completely collapsed, where is the energy of the tank circuit stored?
Last Answer : . Capacitor.
Description : What is the effect on magnetron operation if the magnetic field strength is too high?
Last Answer : The magnetron will not oscillate.
Description : How should a delicate instrument be protected from a magnetic field?
Last Answer : By shielding or surrounding the instrument with a soft iron case, called a magnetic shield or screen.
Description : If the amount of current in the conductor changes, what happens to the magnetic field around the conductor?
Last Answer : If the current increases the magnetic field increases; if the current decreases the magnetic field decreases.
Description : What components in an electrodynamometer-type meter movement produce the magnetic field?
Last Answer : Fixed coils.
Description : What is the mathematical formula for computing the output voltage from a moving coil in a magnetic field?
Last Answer : 8. e = Emax sine θ.
Description : What determines the number of field poles required to establish a rotating magnetic field in a multiphase motor stator?
Last Answer : The number of phases in the applied voltage.
Description : Which of the following storage device can be used for storing large backup data? (a) Floppy disks (b) Hard disk (c) Magnetic tapes (d) None of these -Technology
Last Answer : "B) Hard Disk.
Description : The magnetic storage chip used to provide non-volatile direct access storage of data and that have no moving parts are known as A) Magnetic core memory B) Magnetic tape memory C) Magnetic disk memory D) Magnetic bubble memory
Last Answer : Answer : D
Description : Reading data is performed in magnetic disk by A) Read/write leads B) Sectors C) Track D) Lower surface
Last Answer : Answer : A
Description : Which of the following is not true for a magnetic disk? A) It is expensive relative to magnetic tape B) It provides only sequential access to stored data C) Users can easily update records by writing over the old data D) All of above
Last Answer : Answer : B
Description : The magnetic storage chips used to provide non-volatile direct access storage of data and that have no moving parts are known as________ A. Magnetic core memory B. Magnetic tape memory C. Magnetic disk memory D. Magnetic bubble memory
Last Answer : D. Magnetic bubble memory
Description : Which most popular input device is used today for interactive processing and for the one line entry of data for batch processing? a. Mouse b. Magnetic disk c. Visual display terminal d. Card punch
Last Answer : Mouse
Description : Which of the following is not true for a magnetic disk? a. It is expensive relative to magnetic tape b. It provides only sequential access to stored data c. Users can easily update records by writing over the old data d. All of above
Last Answer : It provides only sequential access to stored data
Description : Reading data is performed in magnetic disk by a. Read/write leads b. Sectors c. Track d. Lower surface
Last Answer : Read/write leads
Description : Which of, the following isa storagedevice that uses rigid,permanently installed magnetic disks to store data/information– (A) floppy diskette (B) hard disk (C) permanent disk (D) opticaldisk (E) None of these
Last Answer : hard disk
Description : Which of the following is a storage device that uses rigid, permanently installed magnetic disks to store data/information - 1) Floppy diskette 2) Hard disk 3) Permanent disk 4) None of these
Last Answer : 2) Hard disk
Description : Which of the following is an example of an optical disk? 1) Magnetic disks 2) Memory disks 3) Data bus disks 4) Digital versatile disks
Last Answer : 4) Digital versatile disks
Description : Which of the following is a storage device that uses rigid, permanently installed magnetic disks to store data/information - 1 Floppy diskette 2 Hard disk 3 Permanent disk 4 None of these
Last Answer : 2 Hard disk
Description : Which of the following is an example of an optical disk? 1 Magnetic disks 2 Memory disks 3 Data bus disks 4 Digital versatile disks
Last Answer : 4 Digital versatile disks
Last Answer : a. Mouse
Description : The magnetic storage chip used to provide non-volatile direct access storage of data and that have no moving parts are known as a. Magnetic core memory b. Magnetic tape memory c. Magnetic disk memory d. Magnetic bubble memory
Last Answer : a. Magnetic core memory
Last Answer : b. It provides only sequential access to stored data
Last Answer : a. Read/write leads
Last Answer : d. Magnetic bubble memory
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 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 : What are the three most popular methods for encoding digital data onto magnetic disks?
Last Answer : a. Frequency modulation (FM). b. Modified frequency modulation (MFM). c. Run length limited (RLL).
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 : 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 : 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 : What is the normal organization of data recorded on magnetic storage media?
Last Answer : By bits, characters (bytes), fields, records, and files.
Description : Other than disk, what is another media used for backup files?
Last Answer : Magnetic tape.
Description : What is the temperature range within which a disk will operate?
Last Answer : 10 to 50 degrees Celsius or 50 to 120 degrees Fahrenheit.
Description : What type of hard disk drive interface has all of the controller card electronics included in the disk drive itself?
Last Answer : Integrated drive electronics (IDE).
Description : What type of disk drive interface has most of the electronics on a controller card mounted in the host computer?
Last Answer : ST-506/412 interface.
Description : The control electronics component of a floppy or hard disk drive performs what three main functions?
Last Answer : a. Spins the disk at the correct speed. b. Moves the heads across the recording surface. c. Tells the write/read heads when to write data and when to read it.