✨ Technical Specifications and Engineering Details
2182
THE NEW ZEALAND GAZETTE.
[No. 54
Instruction circuits; observation circuits.
Service meters; load curves.
Lamp-cap markings.
Subscribers’ apparatus; extension circuits.
Coin-collecting boxes.
Party-line systems.
Cabling; methods of distribution, jointing, identification of circuits,
wiring of buildings.
Trunk exchanges—sections, trunk circuits, operators’ cord circuits.
Concentration arrangements.
Trunk test-boards.
Transfer arrangements.
Time-check system; calculagraph.
Superimposed and phantom circuits.
Record tables.
Simultaneous telegraphy and telephony.
Transmission :—
Elementary theory of telephonic transmission.
Effects of resistance, capacity, inductance, and leakage on the
propagation of electric waves; the relation between these
quantities which gives a distortionless circuit.
Attenuation factor.
Pupin’s system of inserting inductances, or “loading.”
Limiting distances to which good speech is possible through the
various forms of conductors and cables.
K. Telegraph and Telephone Engineering as applied to Underground
Construction; Properties of Telegraph and Telephone Materials.
Construction of underground lines :—
Surveys—points to be specially noted.
Depth of trenches.
Methods of jointing and laying cast-iron pipes; use of solid
bends and split couplings.
Various forms of conduits containing multiple ducts.
Joint-boxes; pillar test-boxes; manholes.
Lead-covered paper-insulated cables; methods of drawing in
and jointing; testing of joints; desiccation.
Cable distribution and connection boxes.
Replacement of lines.
Tests during construction.
Removal of faults.
Telegraph and telephone materials :—
Physical, electrical, and magnetic properties of materials used in
construction of telegraph and telephone lines and apparatus.
Causes of deterioration; protection from same.
Conductors—Electric and thermal conductivity; specific heat and
gravity; strength, hardness; ductility; malleability.
Manufacture of iron and copper wires and messenger-cables.
Insulators—uses; dielectric strength; specific inductive capacities;
specific resistances.
L. Advanced Electrical Engineering as applied to Electric Light and
Power; Gas and Oil Engines.
Alternating electric currents, characteristics of.
Alternating current circuits, properties of; relation of resistance,
inductance, capacity.
Electrical measuring-instruments, including wattmeters—construc-
tion, uses, and testing of same.
Electric heating and ventilating apparatus as applied to buildings.
Illumination, requirements and laws of.
Light-distribution.
Reflection and refraction; shades.
Photometry.
Electrical machinery :—
A.C. generators and motors, fundamental principles of con-
struction and general principles of action.
Switchboard starting and protective devices.
Principles of construction and operation of transformers used
in power-distribution.
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Online Sources for this page:
VUW Te Waharoa —
NZ Gazette 1914, No 54
NZLII —
NZ Gazette 1914, No 54
✨ LLM interpretation of page content
🚂
Telephone Systems and Equipment; Transmission
(continued from previous page)
🚂 Transport & CommunicationsTelephone systems, Switchboards, Magneto systems, Common-battery systems, Exchange plants, Instruction circuits, Observation circuits, Service meters, Load curves, Lamp-cap markings, Subscribers’ apparatus, Extension circuits, Coin-collecting boxes, Party-line systems, Cabling, Methods of distribution, Jointing, Identification of circuits, Wiring of buildings, Trunk exchanges, Sections, Trunk circuits, Operators’ cord circuits, Concentration arrangements, Trunk test-boards, Transfer arrangements, Time-check system, Calculagraph, Superimposed circuits, Phantom circuits, Record tables, Simultaneous telegraphy and telephony, Transmission, Elementary theory of telephonic transmission, Effects of resistance, Capacity, Inductance, Leakage, Propagation of electric waves, Distortionless circuit, Attenuation factor, Pupin’s system, Inductances, Loading, Limiting distances, Good speech, Conductors, Cables
🚂 Telegraph and Telephone Engineering as applied to Underground Construction; Properties of Telegraph and Telephone Materials
🚂 Transport & CommunicationsTelegraph engineering, Telephone engineering, Underground construction, Telegraph materials, Telephone materials, Surveys, Depth of trenches, Methods of jointing, Cast-iron pipes, Solid bends, Split couplings, Conduits, Multiple ducts, Joint-boxes, Pillar test-boxes, Manholes, Lead-covered paper-insulated cables, Drawing in, Jointing, Testing of joints, Desiccation, Cable distribution, Connection boxes, Replacement of lines, Tests during construction, Removal of faults, Physical properties, Electrical properties, Magnetic properties, Deterioration, Protection, Conductors, Electric conductivity, Thermal conductivity, Specific heat, Gravity, Strength, Hardness, Ductility, Malleability, Manufacture of iron wires, Manufacture of copper wires, Messenger-cables, Insulators, Uses, Dielectric strength, Specific inductive capacities, Specific resistances
🏗️ Advanced Electrical Engineering as applied to Electric Light and Power; Gas and Oil Engines
🏗️ Infrastructure & Public WorksElectrical engineering, Electric light, Power, Gas engines, Oil engines, Alternating electric currents, Characteristics, Alternating current circuits, Properties, Resistance, Inductance, Capacity, Electrical measuring-instruments, Wattmeters, Construction, Uses, Testing, Electric heating, Ventilating apparatus, Buildings, Illumination, Requirements, Laws, Light-distribution, Reflection, Refraction, Shades, Photometry, Electrical machinery, A.C. generators, Motors, Fundamental principles, Construction, General principles of action, Switchboard starting, Protective devices, Transformers, Power-distribution