Quantcast Answers - Page 12u

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ANSWERS TO QUESTIONS Q1 THROUGH Q56.

A1. The connection must be both mechanically and electrically as strong as the conductor or device with which it is used
A2. By use of a wire-stripping tool
A3. Hot-blade stripper.
A4. Knife.
A5. To prevent damage to the tape insulation.
A6. To prevent the joint from being bulky.
A7. When wires are in conduit and a junction box is used.
A8. Fixture joint.
A9. Knotted tap joint.
A10. As a protective covering over the rubber tape.
A11. Requires relatively little operator skill to install.
A12. Spaghetti or heat-shrinkable tubing.
A13. 300F
A14. 200 psig.
A15. No, it is done automatically by the petroleum abrasive compound that comes in the terminal or splices.
A16. Power-operated crimping tools.
A17. It gouges the terminal lug and causes deterioration.
A18. The use of preinsulated splices and terminal lugs.
A19. It has insulation support for extra supporting strength of the wire insulation.
A20. To identify wire sizes they are to be used on.
A21. Solder will not adhere to dirty, greasy, or oxidized surfaces.
A22. The coating of the material to be soldered with a light coat of solder.
A23. To prevent burning the insulation during the soldering process and to allow the wire to flex easier at a stress point.
A24. One-half the stripped length.
A25. Movement of the parts being soldered while the solder is cooling.
A26. The capacity of the soldering iron to generate and maintain a satisfactory soldering temperature while giving up heat to the joint being soldered.
A27. Although its temperature is as high as the larger irons, it does not have thermal inertia.
A28. The resistance of its heating element increases with rising temperature, thus limiting the current flow.
A29. File the tip until it is smooth and retin it.
A30. It will overheat and could burn the insulation of the wire being soldered.
A31. The heating and cooling cycles.


A32. Electronic components, such as resistors, capacitors, and transistors.
A33. 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.
A34. The strands can fall into electrical equipment being worked on and cause short circuits.
A35. It enables the tip to be removed easily when another is to be inserted.
A36. Wrap a length of copper wire around one of the regular tips and bend to the proper shape for the purpose.
A37. Tin and lead.
A38. 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.
A39. 60-percent tin and 40-percent lead (60/40 solder).
A40. It cleans the metal by removing the oxide layer and prevents further oxidation during the soldering.
A41. Noncorrosive, nonconductive rosin fluxes.
A42. To remove contaminants from soldered connections.
A43. To prevent damage to heat-sensitive components.
A44. To aid in tracing the conductors when alterations or repairs are required.
A45. Round cord has a tendency to cut into the wire insulation.
A46. Two and one-half times the length of the longest conductor in the group.
A47. To keep the tape or cord from fouling during the lacing operation.
A48. When required, such as for the filament leads in electron tube amplifiers.
A49. Do not tie too tightly and use the proper type of tape.
A50. With a square knot and at least two marling hitches drawn tightly.
A51. Bundles that are 1 inch or larger in diameter
A52. With a telephone hitch.
A53. They are bound together at intervals with telephone hitches.
A54. When wire bundles are supported by cable supports that are more than 12 inches apart.
A55. Military Standard hand tool.
A56. High-temperature, pressure-sensitive tape.




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