Description : Based on what factors will you select rating of components for a starter cell?
Last Answer : Factors for selecting rating of components are, a. Capacity of load. b. Type of starting. c. Duty (continuous or intermittent). d. Type of protection. e. Nature of starting (acceleration time is slow or fast).
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 : What does the current rating of a fuse indicate?
Last Answer : The amount of current the fuse will allow without opening.
Description : What is the current rating of a switch?
Last Answer : The maximum current a switch is designed to carry.
Description : Which of the following statements about copper wire sized by the AWG rating is correct? A. Number 12 AWG wire has a higher current rating than number 10 AWG wire. B. Number 10 AWG wire has a higher ... Number 12 AWG wire at 25°C has more resistance per 1000 feet than No. 10 AWG wire at 25°C.
Last Answer : Answer: D
Description : Which of the following statements concerning copper wire sized by AWG numbers is correct? A. Number 12 AWG wire has a higher current rating than 10 AWG wire. B. Number 12 AWG wire at 25°C has more ... dielectric strength than 12 AWG wire. D. Number 12 AWG wire is larger than number 10 AWG wire.
Last Answer : Answer: B
Description : What factors are used to select a circuit breaker?
Last Answer : The power requirements of the circuit and the physical space available.
Description : If the specified state is OFF, how many FFs may be off at one time?
Last Answer : One.
Description : What causes the specified condition to shift position?
Last Answer : The input, or clock pulse.
Description : Primary storage capacities are usually specified in what unit of measure?
Last Answer : Number of bytes.
Description : What does the wattage rating of a resistor indicate?
Last Answer : Its ability to dissipate heat
Description : The floppy disks you are using have a rating of 96 TPI. What does this mean?
Last Answer : The disks can hold 96 tracks per inch.
Description : . If the power distribution system shown in figure 2-22 uses selective tripping, what is the time delay rating for each of the circuit breakers shown?
Last Answer : CB1-long time delay; CB2, CB3-short time delay; CB4 through
Description : What does the voltage rating of a fuse indicate?
Last Answer : The ability of the fuse to quickly extinguish the arc after the fuse element melts and the maximum voltage that cannot jump across the gap of the fuse after the fuse opens.
Description : What is the voltage rating of a switch?
Last Answer : The maximum voltage allowable in the circuit in which the switch is installed.
Description : The rating of fuse wire is always expressed in (a) volts (b) amperes (c) ampere-volt (d) ampere-hours
Last Answer : The rating of fuse wire is always expressed in Amperes
Description : List the three factors used to calculate resistance of a particular conductor in ohms.
Last Answer : Length, cross-sectional area, and specific resistance of a unit volume of the substance from which the conductor is made
Description : The amount of optical power coupled into an optical fiber depends on what four factors?
Last Answer : (1) The angles over which the light is emitted. (2) The size of the source's light-emitting area relative to the fiber core size. (3) The alignment of the source and fiber. (4) The coupling characteristics of the fiber (such as the NA and the refractive index profile)
Description : . Which type of variable resistor should you select for controlling a large amount of current?
Last Answer : The rheostat.
Description : Select the alternative which consists of positive factors contributing to effectiveness of teaching: List of factors: (a) Teacher's knowledge of the subject. (b) Teacher's socio-economic background. (c) Communication skill of the teacher. ( ... and (f) (C) (b), (d) and (e) (D) (a), (c) and (f)
Description : List out the factors to be considered to select electrical drives for an application.
Last Answer : Following are the factors to be considered to select electrical drives for an application: 1) Load torque required at normal speed matches with available torque of motor. 2) Break down torque ... selecting an energy efficient motor the cost benefit analysis over the long run must be worked out.
Description : What factors go into determining a country's human developing index (HDI) rating?
Last Answer : literacy and education;; and life expectancy
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 : List four system topologies that can be constructed using point-to-point fiber optic links.
Last Answer : Linear bus, ring, star, and tree topologies.
Description : List the four safety precautions observed when using a megger.
Last Answer : a. Use meggers for high-resistance measurement only. b. Never touch the test leads when the handle is being cranked. c. Deenergize and discharge the circuit completely before connecting a megger. d. Disconnect the item being checked from other circuitry, if possible, before using a megger
Description : List the four safety precautions observed when using ohmmeters.
Last Answer : a. Deenergize and discharge the circuit before connecting an ohmmeter. b. Do not apply power to a circuit while measuring resistance. c. Switch ohmmeters to the OFF position, ... d. Adjust the ohmmeter after changing resistance range and before measuring reading indicates the resistance.
Description : What procedure involves the use of finely braided copper wire to remove solder?
Last Answer : Wicking.
Description : What is an advantage of using a resistance soldering iron when soldering wire to a connector?
Last Answer : The soldering tips are hot only during the brief period of soldering the connection, thus minimizing the chance of burning the wire insulation or connector inserts.
Description : What is used to tie wire bundles in high-temperature areas?
Last Answer : High-temperature, pressure-sensitive tape.
Description : What size wire bundles require double lace?
Last Answer : Bundles that are 1 inch or larger in diameter
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 should wire be stripped 1/32 inch longer than the depth of the solder barrel?
Last Answer : To prevent burning the insulation during the soldering process and to allow the wire to flex easier at a stress point.
Description : Should aluminum wire be cleaned prior to installing an aluminum terminal lug or splice?
Last Answer : No, it is done automatically by the petroleum abrasive compound that comes in the terminal or splices.
Description : Why are the ends of the wire clamped down after a Western Union splice is made?
Last Answer : To prevent damage to the tape insulation.
Description : What tool should be used to strip aluminum wire?
Last Answer : Knife.
Description : What is the preferred method for stripping wire?
Last Answer : By use of a wire-stripping tool
Description : The large surface area of a waveguide greatly reduces what type of loss that is common in two-wire and coaxial lines?
Last Answer : Copper loss.
Description : . Why are coaxial lines more efficient at microwave frequencies than two-wire transmission lines?
Last Answer : The electromagnetic fields are completely confined
Description : What is the purpose of the spring or wire around the leads of a new MOSFET?
Last Answer : To prevent damage from static electricity.
Description : Conduction in which type of semiconductor material is similar to conduction in a copper wire?
Last Answer : N-type material.
Description : What type of PN diode is formed by using a fine metal wire and a section of N-type semiconductor material?
Last Answer : Point-contact.
Description : What safety precaution must you observe when soldering or hot-wire stripping fluoroplastic insulated wire?
Last Answer : Adequate ventilation.
Description : If a wire passes through a connector what portion of the aircraft wire identification number changes?
Last Answer : Wire segment letter.
Description : Where would you find the wire identification system for a specific piece of equipment?
Last Answer : In the technical manual for the equipment
Description : What are the two primary disadvantages of a two-wire open line?
Last Answer : High radiation losses and noise pickup.
Description : Name two of the three described uses of a two-wire open line.
Last Answer : Power lines, rural telephone lines, and telegraph lines
Description : Which wire has the least resistance? Wire A-copper, 1000 circular mils, 6 inches long. Wire B-copper, 2000 circular mils, 11 inches long.
Last Answer : Wire B.
Description : What is the purpose of an order-wire circuit?
Last Answer : For operator-to-operator service messages and frequency changes.
Description : What is the common name for enamel-insulated wire?
Last Answer : Magnet wire.
Description : State two advantages of using aluminum wire for carrying electricity over long distances.
Last Answer : It is light and reduces corona.