6
1-38. What is the common name for enamel-
insulated wire?
1. Winding wire
2. Motor wire
3. Magnet wire
4. Coil wire
1-39. What types of conductor protection are
normally used for shipboard wiring?
1. Wire braid armor and nonmagnetic
steel tape
2. Lead cable and Jute
3. Jute and nonmagnetic steel tape
4. Lead sheathing and rubberized tape
1-40. What are the basic requirements for a
splice or terminal connection?
1. To be mechanically and electrically
effective
2. To be preinsulated and
nonconductive
3. To have minimum cost and
maximum efficiency
4. To have circuit continuity and
minimum cost
1-41. The preferred method for removing
insulation from most types of insulated
wire is by using what tool?
1. Razor blade
2. Electrician’s pliers
3. Wire stripper
4. Knife
1-42. When a wire is insulated with glass braid
or asbestos and requires stripping, which
of the following tools should NOT be
used?
1. Knife
2. Rotary wire stripper
3. Hand wire stripper
4. Hot-blade wire stripper
1-43. What is the preferred tool to use to strip
aluminum wire?
1. Knife
2. Rotary wire stripper
3. Hand wire stripper
4. Hot-blade wire stripper
1-44. When a Western Union splice is used to
connect two wires, why should the
twisted ends of the wires be pressed
down as close as possible to the straight
portion of the wire?
1. To increase the strength of the splice
2. To prevent the wires from
puncturing the tape covering
3. To minimize the resistance change
in the circuit
4. To increase the dielectric strength of
the insulation
1-45. When multiconductor cables are spliced,
why are the splices staggered?
1. To prevent possible shorting
between conductors
2. To increase the strength of the
individual splices
3. To decrease insulated resistance
4. To reduce the overall size of the
joint
1-46. When is a rattail joint normally used?
1. When a branch circuit is required
and a junction box is used to join
conduit
2. When a Western Union splice
would be too bulky
3. When asbestos or glass braid is used
as insulation
4. When the branch wire will be
subjected to a heavy strain
