Description : Define the metal solvent action that takes place when copper conductors are soldered together.
Last Answer : The solder dissolves a small amount of the copper, which combines with the solder forming a new alloy; therefore, the joint is one common metal.
Description : Why must items to be soldered be cleaned just prior to the soldering process?
Last Answer : Solder will not adhere to dirty, greasy, or oxidized surfaces.
Description : What is a major advantage of the crimped terminal over the soldered terminal?
Last Answer : Requires relatively little operator skill to install.
Description : Flux aids in soldering by removing what from surfaces to be soldered?
Last Answer : Oxides.
Description : What is the appearance of a properly soldered joint?
Last Answer : Bright and shiny with no cracks or pits.
Description : When soldering a printed circuit board component, you should be careful to prevent damage by _________. A. quickly heating the joints, using a high wattage iron B. using the soldering iron tip sparingly C. using only acid cord solder D. applying mechanical pressure to the joints being soldered
Last Answer : Answer: B
Description : Name two types of through-hole termination.
Last Answer : Clinched lead, straight-through, and offset pad.
Description : By using ................... you can force immediate termination of a loop, by passing the conditional expression and any remaining code in the body of the loop. A) Break B) Continue C) Terminate D) Loop Close
Last Answer : A) Break
Description : Turret, bifurcated, and hook terminals are used for what type of termination
Last Answer : Above-the-board termination.
Description : Damaged or missing termination pads are replaced using what procedure?
Last Answer : Epoxy a replacement pad to the board, set an eyelet, and solder it.
Description : Job termination. Do we have any labor attorneys, corporate HR folks, or managers of stores in a large chain on board?
Last Answer : In California all jobs are at will; the choice of the employer, and do not require any reason for termination, unless there is a written and signed contract. I suggest he look up the ... He should also contact the unemployment office right away, and perhaps see a job counselor/placement officer.
Description : In a temporary signaling arrangements for a bridge work in BG section, speed board shall be placed in advance of 30 m from the a) C.L. of the bridge b) Termination Board c) Start of the bridge/work spot* d) Caution Board
Last Answer : c) Start of the bridge/work spot*
Description : If the pregnancy of a woman is beyond 12 weeks and up to 20 weeks, for medical termination of pregnancy (MTP) a) opinion of one doctor is necessary b) opinions of two doctors are ... medical board with more than two doctors is necessary d) permission from the local civil court is necessary
Last Answer : b) opinions of two doctors are necessary
Description : If the pregnancy of a woman is within the first trimester (within 12 weeks), for medical termination of pregnancy (MTP) a) opinion of one doctor is necessary b) opinions of two doctors ... medical board with more than two doctors is necessary d) permission from the local civil court is necessary
Last Answer : a) opinion of one doctor is necessary
Description : Rotating the plane of polarization of a wavefront by passing it through a ferrite device is called what?
Last Answer : . Faraday rotation.
Description : Is the Intel iMac's CPU socketed or soldered?
Last Answer : I don't know technically what the case is (I suspect socketed as it's based on standard architecture) but it's not possible to upgrade the CPU, either by yourself and definitely any Apple service ... CPU upgrades are simply not allowed and Apple has made sure that it's not possible to do so.
Description : Whose idea was it to make laptop adapters cords soldered on!
Last Answer : I got a new imitation Dell power cord off of eBay for the fraction of the price of the Dell one when mine went south. It is a pain in the butt when they break, but knowing where to buy a new one if this happens to break (which does seem most likely) makes it easier to live with. :)
Description : In D.C. motor construction, the armature coils' ends are _______________. A. soldered to the commutator bar risers B. imbedded into core slots C. crimped together with brush pigtails D. spliced with the field windings
Last Answer : Answer: A
Description : In actual applications, electrical connections to 'R1-R2' of figure 'A' and to 'R1-R2- R3' of figure 'B' shown in the illustration are made by ______________. EL-0092 A. soldered contacts B. spliced and taped connections C. slip rings and brushes D. solderless crimp-on connectors
Last Answer : Answer: C
Description : If a delicate component must be soldered into a circuit, the component may be protected from the heat of the soldering process by _____________. A. operating the soldering gun not more than 60 seconds at ... oxidizing the leads to be soldered D. coating the leads to be soldered with a light oil film
Description : A capacitor discolored due to excessive heat should be _____________. A. calibrated B. replaced C. cooled D. soldered
Description : One of the following is a possible cause for a slow drift of frequency in a self-exited transmitter oscillator circuits resulting to a poor frequency stability. A. Loose shielding B. ... capacitor in the oscillator C. Poor soldered connections D. Faulty capacitor, resistor, tubes or resistors
Last Answer : B. Heating of capacitor in the oscillator
Description : Which of the following is one of the possible causes for a slow drift of frequency in a self exited transmitter oscillator circuits resulting to a poor frequency stability? A. Poor soldered connections ... , or antenna circuits D. DC and RF heating of resistors, causing then to change values.
Last Answer : D. DC and RF heating of resistors, causing then to change values.
Description : The filament of an electric lamp becomes white hot but the lead-in wires holding the filament are only slightly heated because they (a) have smaller current passing through them (b) have very low resistance (c) have higher melting point (d) are made of black iron
Last Answer : Ans:(b)
Description : The charge of a lead-acid battery can be restored by ______. A. passing an alternating electric current through the cell B. passing a direct electric current through the cell C. adding acid to the electrolyte D. all of the above
Description : What term is used to describe the frequency at which the filter circuit changes from the point of rejecting the unwanted frequencies to the point of passing the desired frequencies?
Last Answer : Frequency cutoff (fco).
Description : During the manufacture of a point-contact diode, what is the purpose of passing a relatively large current from the catwhisker to the silicon crystal?
Last Answer : . To form a small region of p-type material
Description : Three stop codons, which aids in termination of translation are also known as A- pause codons B- .nonsense codons C- missense codons D- antisense codons
Last Answer : .nonsense codons
Description : Multilayer printed circuit board repair is the responsibility of what 2M repair technician?
Last Answer : Microminiature repair technician.
Description : How is board damage caused by technicians?
Last Answer : Repairs by untrained personnel and technicians using improper tools.
Description : How do you prevent excessive heat buildup on an area of a board when soldering multilead components?
Last Answer : Use a skipping pattern
Description : When does most printed circuit board damage occur?
Last Answer : During disassembly or repair.
Description : What term is used to identify the procedure of connecting one side of a circuit board with the other?
Last Answer : Interfacial connections.
Description : Modules or submodules attached to a mother board are what packaging level?
Last Answer : Level I.
Description : List five precautions to take when installing fiber optic systems on board naval ships.
Last Answer : a. Never bend an optical fiber or cable at a radius of curvature less than the minimum bend radius. b. Never pull fiber optic cables tight or fasten them over or through sharp corners or ... the hardware. e. Allow only trained, authorized personnel to install or repair fiber optic systems.
Description : When you stop and do not have a parking ticket. What is the threat? Fine?
Last Answer : Wizard, give a more accurate question, otherwise you will not get the correct answer.
Description : Does a cooling pad work without electricity?
Last Answer : You need to have a consistent electrical connection to keep a cooling pad working for a laptop.
Description : In IEEE 802.11, when a frame isgoingfrom one station in a BSS toanother without passing through thedistribution system, the address flag is _____ A) 00 B) 01 C) 10 D) 11
Last Answer : 00
Description : The changing of solid directly to vapor without passing through liquid state is called a. Evaporation b. Vaporization c. Sublimation d. Condensation
Last Answer : Sublimation
Description : ____ is when water goes from a solid to a gas without passing through the liquid phase. a. Transfusion c. Evaporation b. Sublimation d. Condensation
Last Answer : b. Sublimation
Description : Which type of separation is most unpleasant for an employee? (a) Termination ; (b) Mandatory retirement ; (c) Voluntary retirement ; (d) Resignation
Last Answer : (a) Termination ;
Description : The imaginary line passing through the intersection of cross hairs and the optical centre of the objective, is known as (A) Line of sight (B) Line of collimation (C) Axis of the telescope (D) None of these
Last Answer : (B) Line of collimation
Description : 0 Pick up the correct statement from the following: (A) The point through which the resultant of the shear stresses passes is known as shear centre (B) In the standard rolled channels, the shear centre ... horizontal plane and away from the C.G., outside of the leg projection (D) All the above
Last Answer : (D) All the above
Description : In a theodolite the line passing through the intersection of the horizontal and vertical cross hairs and the optical centre of the object glass and its continuation, is known as (a) Horizontal axis (b) Vertical axis (c) Line of collination (d) Line of sight (e) Either of c or d above*
Last Answer : e) Either of c or d above*
Description : What is the tin-lead alloy percentage of solder used for electrical connectors, splices, and terminal lugs?
Last Answer : 60-percent tin and 40-percent lead (60/40 solder).
Description : How is the collector lead identified on an oval-shaped transistor?
Last Answer : By the wide space between the collector lead and the other two leads (emitter and base)
Description : When taking a voltage measurement, which lead of the voltmeter should you connect to the circuit first?
Last Answer : Ground.
Description : What undesirable effect is caused by the inductance of the cathode lead?
Last Answer : Degenerative feedback.
Description : What are the three types of lead-sheathed cables?
Last Answer : Alloy lead, pure lead, and reinforced lead.
Description : When all the lead sulfate has been converted, what is the condition of the cell?
Last Answer : Fully charged.