Description : What are the two primary disadvantages of a two-wire open line?
Last Answer : High radiation losses and noise pickup.
Description : How many voltage outputs are available from a two-phase three-wire alternator?
Last Answer : Three.
Description : Waveforms are described in terms of what two functions?
Last Answer : Amplitude and time.
Description : If the current was increased to 4 amps, what would be the voltage drop across each resistor in the circuit described in question 17?
Last Answer : E1 = 80 volts. E2 = 240 volts. E3 = 320 volts
Description : What is the voltage dropped by each resistor of the circuit described in question 17?
Last Answer : E1 = 60 volts. E2 = 180 volts. E3 = 240 volts.
Description : What type of resistor should be used in the circuit described in question 12?
Last Answer : A wirewound resistor.
Description : Ships’ generators produce 450-volt, three-phase, ac power; however, most equipment uses 117-volt, single-phase power What transformers and connections are used to convert 450- volt, threephase power to 117-volt, single-phase power?
Last Answer : A method of generating oscillations, a method of turning the oscillations on and off (keying), and an antenna to radiate the energy.
Description : At what point on an open-circuited rf line do voltage peaks occur?
Last Answer : At 1/2 wavelength from the end and at every 1/2 wavelength along the line
Description : On an open-ended transmission line, the voltage is always zero at what distance from each end of the line?
Last Answer : One-fourth the distance from each end of the line.
Description : Determine the conductance of a two-wire open line with the following parameters: D = 4 in., d = 0.1 in. and ρ = 2.6x108 Ω-m. A. 2.76x10-9 S/m B. 2.76x10-6 S/m C. 2.76x10-12 S/m D. 2.76x10-3 S/m
Last Answer : A. 2.76x10-9 S/m
Description : Which of the following is considered the most frequently used transmission line? A. Two-wire open line B. Twin lead C. Rigid coaxial line D. Flexible coaxial line
Last Answer : D. Flexible coaxial line
Description : A transmission line consisting of two conductors that have equal resistance per unit length. A. Unbalanced line B. Open-wire line C. Balanced line D. Coaxial line
Last Answer : C. Balanced line
Description : What are some of the uses for gold described in the passage?
Last Answer : Finances, Investing, Dentistry, Medicine, Medals,Statues
Description : An intuitive manager could best be described as one who: A)uses scientific problem solving B)eliminates uncertainty in decision making C)searches out facts and data systematically D)uses an orderly approach to gathering information E)uses personal knowledge and experience to make decisions
Last Answer : E)uses personal knowledge and experience to make decisions
Description : What line has a typical velocity factor of about 0.8? A. Shielded pair B. Flexible coaxial C. Twin-lead D. Open-wire line
Last Answer : C. Twin-lead
Description : What is the typical velocity factor of open-wire line? A. 0.9 B. 0.8 C. 0.5 D. 0.7
Last Answer : A. 0.9
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 : State two advantages of using aluminum wire for carrying electricity over long distances.
Last Answer : It is light and reduces corona.
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 : 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 procedure involves the use of finely braided copper wire to remove solder?
Last Answer : Wicking.
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 why it is important for you to consider the ambient (surrounding) temperature of a conductor when selecting wire size.
Last Answer : The heat surrounding the conductor is an important part of total conductor heating.
Description : List the four factors you should use to select wire for a specified current rating.
Last Answer : Conductor size, the material it is made of the location of the wiren in a circuit, and the type of insulation used.
Description : When using an American Standard Wire Gauge to determine the size of a wire, where should you place the wire in the gauge to get the correct measurement?
Last Answer : In the parallel walled slot not the circular area.
Description : Using table 1-2, determine the resistance of 1,500 feet of AWG 20 wire at 25º C.
Last Answer : 1,000 ft = 10.4 ohms1,500 ft = 1.5 × 0.4 = 15.6 ohms
Description : To radiate power efficiently, a long-wire antenna must have what minimum overall length?
Last Answer : One-half wavelength.
Description : What are three methods for determining if a fuse is open?
Last Answer : Visual inspection, indicators, and using a meter
Description : Which poetic form can best be described as "open"?
Last Answer : Sestina
Description : A circuit with a blown fuse would be described as a/an _____________. A. short circuit B. open circuit C. bonded circuit D. grounded circuit
Last Answer : Answer: B
Description : Some vascular bundles are described as open because these (a) are surrounded by pericycle but no endodermis (b) are capable of producing secondary xylem and phloem (c) possess conjunctive tissue between xylem and phloem (d) are not surrounded by pericycle.
Last Answer : (b) are capable of producing secondary xylem and phloem
Description : When x-ray demonstrates a fracture in which bone has splintered into several pieces, that fracture is described as a) comminuted. A comminuted fracture may require open reduction and internal fixation. b ... . An impacted fracture is one in which a bone fragment is driven into another bone fragment.
Last Answer : a) comminuted. A comminuted fracture may require open reduction and internal fixation.
Description : The two-cavity klystron uses what cavity as an output cavity?
Last Answer : The catcher cavity.