Syllabus for Dental Equipment Maintenance Technician

MODULE 1 – GENERAL HAND TOOLS (10 MARKS)

File, Specification, Types of files, Hacksaw frame, Types, Hacksaw
Blade, Chisels Type, Uses, Spanner Types, Uses, Screw Driverstypes, Uses, Different Pliers, Uses, Try square, Steel Rule,
Punches, Hammer, Types, Combination set, Surface plate

MODULE 2 THREADS & DIFFERENT FORMS (MARKS
10)

Definition of thread, Uses of threads, Terminology of threads,
Types of threads,
Elements of threads, Root, Crest, Flank, Angle of thread, Major
diameter, Minor diameter, Helix angle, Start of thread, Single start
thread, Multi start thread, Uses and identification of multi start
thread, V thread, Metric thread, BSW thread, BA , thread, BSF
thread, Square thread, Trapezoidal thread, Buttress thread,
Knucle threads, Acme thread and uses of these threads

MODULE 3 – BASIC ELECTRICITY (10 MARKS)

Electricity concept, Uses of electricity, AC&DC Current,
Comparison, Electrolysis process Potential Difference, Voltage,
Current, Resistance, Units, Conductor, Insulator Types of
connections, Serial, Parallel connections Measuring Instruments,
Ohm´s law, Ammeter, Voltmeter, Multimeters, Electrical Safety
Precautions

MODULE 4 – METERIAL SCIENCE (10 MARKS)

Difference between iron and steel, Ferrous metals, Non-Ferrous
Metals, Alloys, Different alloys and their uses, Composition of
different alloys, Properties of Metals, Physical& Mechanical
properties of metals, Electrical Properties, Chemical Properties,
Melting Point of Different Metals & Alloys

MODULE 5 – HEAT, TEMPERATURE & PRESSURE (8
MARKS)

Concept of Heat & Temperature, Effects of heat, Difference
between Heat & Temperature, Units of Heat, Scales of
Temperature, Celsius, Fahrenheit, Kelvin, Temperature measuring
Instruments, Transmission of heat, Conduction, Convection, and
Radiation, Concepts of pressure, Units of pressure, Gauges used
for measuring pressure

MODULE 6 – MOULDS, MOULDING & CASTING (7
MARKS)

Different casting processes, Sand casting, Shell moldings, Gravity
die casting, Pressure die casting, Plaster mold casting, Investment
casting, Centrifugal casting, Mold making procedure, Venting of
molds

MODULE 7 – PUMPS, MOTORS & AIR COMPRESSORS
(5 MARKS)

Working principle of pumps, motors, & air compressors, Types of
pumps, motors, & air compressors, Specification of pumps,
motors, & air compressors

MODULE 8 – PRECISION MEASURING INSTRUMENTS
(8 MARKS)

Vernier calipers. Types, Parts, Uses, least count, Micrometer, Parts
Specification Uses, Types, Vernier height gauge, Uses, least
count, Depth micrometer, , Uses, least count, &Specifications,
Inside micrometer, Types, Uses, least count, &Specifications,
Digital calipers, Digital micrometers, Specifications

MODULE 9 – BASIC WORKSHOP CALCULATIONS (7 MARKS)

Units and measurements, Fundamental and derived units, Units
for length, mass, and time, Fractions, Proper fractions, Improper
fractions, Ratio and Proportions, Area of square, rectangle,
triangle and circle, Mass &weight 

MODULE 10 – LIMIT, FIT & TOLERANCE (8 MARKS)

Limit system, Upper limit, Lower limit, Maximum limit of size,
Minimum limit of size, Deviation, Upper deviation, Lower
deviation, Zero line, Fits, Clearance fit,
Interference fit, Transition fit, Fundamental deviation, Hole basis
system, Shaft basis system
 

MODULE 11 SAFETY PRECAUTIONS (5MARKS)

Occupational safety, Safety and general precautions in industry
and shop
Floor, first aid, Importance of house keeping

MODULE 12 S0LDERING, WELDING AND BRAZING
(7MARKS)

Soldering process, Soldering iron and parts, Solders, Types of
solders, Flux, Classes

Of flux, Basic welding process, Arc welding, Gas welding, Types of
welding joints, Oxy acetylene gas welding, Braze welding,
Brazing, Filler rod for brazing 

MODULE 13 SURFACE FINISH (5 MARKS)

Surface texture, Roughness, Waviness, Ra values, Surface texture
measuring instruments and their parts, Roughness grade number,
Roughness symbols 

NOTE: – It may be noted that apart from the topics detailed above,
questions from other topics prescribed for the educational qualification of
the post may also appear in the question paper. There is no undertaking
that all the topics above may be covered in the question paper.