Dec. 21.] THE NEW ZEALAND GAZETTE. 3749

SCHEDULE.

52. WITH the object of ascertaining the fitness of officers to fill vacancies in the Clerical Division below the First Class, they may be examined in such technical and departmental subjects as are deemed to the Minister essential for the vacant positions, at such times and places and in such manner as may from time to time be determined by the Minister.

52A. The following shall be the syllabus of the examination for probationary entrants to the Engineering Branch as technical clerks and technical cadets, and the syllabus of the further examinations necessary to be passed before receiving promotion to the other positions named below.

The passing of the examinations shall give no claim for promotion; but only officers passing these examinations shall become eligible for promotion. Promotion shall depend on the occurrence of vacancies. Officers already performing the duties of assistant engineers or electricians must pass the examination in the subjects set for those positions. Candidates for the entrance examination must be capable Morse operators, and be under thirty-five years of age. Officers who possess the necessary qualifications and who may be selected for service in the Engineering Branch shall in all cases be subject to a period of probation, not more than nine months, to determine their fitness for permanent appointment.

TECHNICAL CLERKS AND TECHNICAL CADETS (ON PROBATION).

1. Civil Service Senior Examination, including following subjects to be taken from Group 2, as set in the syllabus for that examination: Arithmetic and algebra, geometry and trigonometry, mechanics and hydrostatics, magnetism and electricity.

2. Senior Technical Examination: Pass marks, 50 per cent.

3. Telephone Exchange Clerks’ Technical Examination: Pass marks, 50 per cent.

SUB-ENGINEERS AND ASSISTANT ELECTRICIANS.

A.* Civil Service Senior Examination (as for Technical Clerks).

B. Senior Technical Examination: Pass marks, 75 per cent.

C. Telephone Exchange Clerks’ Technical Examination: Pass marks, 75 per cent.

D. Overhead telegraph and telephone line construction: Pass marks, 50 per cent.

E. Telegraph and telephone apparatus: Pass marks, 50 per cent.

F. Electric light and power; direct current: Pass marks, 50 per cent.

G. Hydraulics: Pass marks, 50 per cent.

DETAILS OF SYLLABUS.

D.—Overhead Telegraph and Telephone Line Construction.

Preliminary surveys and estimates.

Methods of setting, staying, and strutting poles.

Running wires and cables—binding, jointing, regulating, reconstructing.

Precautions against accidents at crossings.

Methods of terminating and transposing.

Static and kinetic stresses on poles and wires; relation between sag and stress.

Methods of minimizing inductive disturbances.

Deterioration of cables; causes and precautions.

Tools and appliances used in aerial construction.

Precautions for securing the safety of workmen and the public.

Methods of protecting lines from contact with power and lighting wires.

E.—Telegraph and Telephone Apparatus.

Telegraph.—Construction, use, principle, and testing of the undermentioned instruments:—

Sounders (ordinary and polarized).

Wheatstone apparatus.

Keys, relays, switches, condensers.

Galvanometers—Kelvin, astatic, differential, tangent, and suspended coil.

Shunts.

Resistance coils.

Wheatstone bridge, ammeters, voltmeters, ducters, ohmmeters, meggers.

Telephone.—Construction, use, principle, and testing of the undermentioned apparatus:—

The various transmitters and receivers in common use.

Transformers, repeating-coils, impedance coils.

• Officers already holding the Civil Service Senior certificate will be considered as having qualified under heading A. Officers holding partial passes, or who have entered for certain subjects at the ensuing examination, must inform the Secretary forthwith of the subjects taken or proposed to be taken, and must take the remaining subjects from those described in heading 1 (Technical Clerks, &c.).

Magneto and other call-bells.

Magneto-generators.

Indicators, jacks, plugs, relays, keys, and meters.

Testing.—Measurement of resistance, insulation, capacity, and inductance:—

Measurements of E.M.F. and internal resistance of batteries.

Tests for efficiency of apparatus.

Localization of line troubles.

F.—Electric Light and Power; Direct Current.

Electrical units.

D.C. measuring instruments, voltmeters, ammeters.

D.C. dynamo-electric machines:—

Construction, general characteristics, and field of application of D.C. generators and motors (series, shunt, and compound).

Starting-devices.

Overload and underload releases.

Speed-regulation.

Switchboard protective devices.

Diseases of D.C. motors and generators; remedies.

Testing for machine-faults.

Storage batteries:—

Chemistry, capacity, and efficiency.

Construction of modern types of accumulators.

Charging and discharging.

Testing.

Ailments and remedies.

Switch-gears and protective arrangements.

Installation and first charge.

Electric lighting:—

Theory and general description of modern electric illuminants—arc lamps, flame and vapour lamps, incandescent lamps.

Care and regulation of arc lamps.

Incandescent lamps—modern types, their efficiency and characteristics; methods of connecting.

Electric-light fittings.

Wiring and protection of circuits.

Rules governing the wiring of electric circuits (I.E.E.).

G. Hydraulics.

Analogies between electricity and hydraulics.

Weight and pressure of water.

Theoretical velocity of water due to pressure.

Frictional losses in nozzles and pipes.

Sectional area of pipes used in hydraulic transmission.

Measurement of water passing over weirs.

Measurement of water in running streams.

Approximate efficiency of different classes of water-wheels.

Types of wheels most suitable for high and low pressures.

Wheels suitable for driving magneto-generators for exchange ringing.

Relation between speed of wheels and pressure.

Lord Kelvin’s hydraulic wire-testing machine.

ASSISTANT ENGINEERS AND ELECTRICIANS.

H. Telegraph systems of working; testing; protection: Pass marks, 50 per cent.

J. Telephone systems and equipment; transmission: Pass marks, 50 per cent.

K. Telegraph and telephone engineering as applied to underground construction; properties of telegraph and telephone materials: Pass marks, 50 per cent.

L. Advanced electrical engineering as applied to the generation, transmission, and utilization of electric light and power; gas and oil engines: Pass marks, 50 per cent.

DETAILS OF SYLLABUS.

H. Telegraph Systems of Working; Testing; Protection.

Wiring, testing, and fault-localization.

Single- and double-current duplex.

Wheatstone automatic, simplex and duplex.

Quadruplex.

Theory of type-printing apparatus.

Cable transmission.

Concentration, intercommunication, and common-battery systems.

Superimposed circuits.

Methods of counteracting the effects of capacity and inductance.

Repeaters; principle and arrangement of simplex and duplex repeaters.

Forked and divided quadruplex.

Wireless telegraphy; principles and circuits of systems used by the Department.

Protective devices; protection of telegraph and telephone lines and apparatus from lightning and from power circuits.