Description : What type of MOSFET can be independently controlled by two separate signals?
Last Answer : The dual-gate MOSFET.
Description : . In a MOSFET, which element is insulated from the channel material?
Last Answer : The gate terminal.
Description : The substrate of an N-channel MOSFET is made of what material?
Last Answer : P-type material.
Description : What are the four elements of the MOSFET?
Last Answer : Gate, source, drain, and substrate.
Description : When compared to the JFET, what is the input impedance of the MOSFET?
Last Answer : The MOSFET has a higher input impedance.
Description : A MOSFET can be damaged by an electrostatic discharge at approximately what minimum potential?
Last Answer : 35 volts.
Description : What is the purpose of an order-wire circuit?
Last Answer : For operator-to-operator service messages and frequency changes.
Description : A helical spring is fabricated by wrapping wire 19.05 mm in diameter around a forming cylinder 203.2 mm in diameter. Compute the number of turns required to permit an elongation of 101.6 mm. without exceeding a shearing ... G = 82737 N/mm2. a. 10 turns b. 20 turns c. 25 turns d. 30 turns
Last Answer : a. 10 turns
Description : The leads to the primary and the high-voltage secondary windings of a power transformer usually are of what color?
Last Answer : Primary leads-black; secondary leads red.
Description : When you zero a synchro with a synchro tester, what is indicated by a jump in the synchro tester's dial when the S1 and S3 leads are momentarily shorted?
Last Answer : The synchro under test is not on electrical zero.
Description : What two receiver leads are reversed to reverse the rotor's direction of rotation?
Last Answer : 1 and S3.
Description : What leads in a simple synchro system are connected to the ac power line?
Last Answer : The rotor leads.
Last Answer : By pushing it gently out of the board.
Description : When removing the component, under what circumstances may component leads be clipped?
Last Answer : If the component is known to be defective or if the board may be damaged by normal desoldering.
Description : In what direction are component leads clinched on single and double-sided boards?
Last Answer : In the direction of the run.
Description : Leads are formed approximately how many degrees from their major axis?
Last Answer : 90 degrees
Description : How is oxide removed from pads and component leads?
Last Answer : A fine abrasive.
Description : Current leads voltage by 90° (ICE)
Last Answer : Current leads voltage by 90° (ICE)
Description : . A full-scale deflection on an ohmmeter scale indicates what resistance between the leads?
Last Answer : Zero.
Description : A full-scale deflection on an ohmmeter scale indicates what resistance between the leads?
Description : How do you compensate for the resistance of the test leads of a meter?
Last Answer : . By zeroing the meter with the test leads shorted.
Description : Which of the following precautions should be taken when troubleshooting various power circuits using a common solenoid-type mechanical voltage tester (wiggins)? A. Never use this tester on circuits greater ... voltage expected in the circuit in order to prevent damage from an off-scale reading.
Last Answer : Answer: A
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 : 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 : 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 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.
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 : How many voltage outputs are available from a two-phase three-wire alternator?
Last Answer : Three.