Basic Technology

Forms of technology explained with their differences

len Alfred Ajibola - 29th May, 2023 @ 02:45 PM

Topics in Basic Technology

Definitions of technology and their explanations Examples of technology Forms of technology explained with their differences Types of chain drive Types of belt drive Types of Ceramics Advantages and Disadvantages of Chain Drives Len Academy Questions for Basic Technology JSS3, 2nd Term Len Academy Basic Technology Questions, JSS3 Belt and Pulley Drives: Types of belt in belt drives Refrigerator as an electromechanical device, its parts and operations What is chain drive? Classification of chain drive What are Belt Drives? Advantages and Disadvantages of Belt Drives Type of Lines in Technical Drawings Len Academy questions for Basic Technology, JSS2, 2nd Term Len Academy questions for Basic Technology JSS2, 2nd Term, Part 2 What is Maintenance? Types of Maintenance Hardwood and Softwood - Characteristics and Examples What are Ceramics? Characteristics of Ceramics

Academic Questions in Basic Technology

Please click here to see all Questions and Answers

The _____ functions to remove excess heat from the refrigerator.

  • A. Evaporator

  • B. Compressor

  • C. Condenser

  • D. Expansion Valve

  • E. Thermostat

  • F. Defrost System

A fluid or gas that runs through the compartments of a refrigerator is termed _____.

  • A. Water vapor

  • B. Liquid vapor

  • C. Frost

  • D. Refrigerant

  • E. Compressed water

  • F. Evaporated water

Current flows through a path called _____.

  • A. Electricity

  • B. Electric Route

  • C. Electrolysis

  • D. Transformer

  • E. High Tension

  • F. Electric Circuit

Googles are safety wears.

  • A. True

  • B. False

Which of the following is false concerning advanced ceramics?

  • A. They can be made from metallic oxides

  • B. They are very hard and durable

  • C. They are corrosion resistant

  • D. They are fired in the presence of oxygen

  • E. They are fired at a very high temperature of about 1700oC

  • F. They can be made from non-oxides such as carbides and borides

A thin continuous line is used for representing the followings except _____.

  • A. Intersections

  • B. Hatching lines

  • C. Long breaks

  • D. Diagonal line used to state plane surfaces

  • E. Leader lines

  • F. Back section lines

Inverted toothed chain drive - Len Academy

With regards to chain drives, the diagram above is a/an _____ chain.

  • A. Roller

  • B. Silent

  • C. Leaf

  • D. Flat-top

  • E. Detachable

  • F. Acceleration

A type of chain drive commonly used in bicycles is the _____ chain.

  • A. Roller

  • B. Silent

  • C. Leaf

  • D. Flat-top

  • E. Detachable

  • F. Acceleration

Types of Technology:

Technology is defined as the practical application of knowledge in a specific area. With regards to this definition, we utilize technology in different areas of our lives. These will include medicine, education, agriculture, communication, entertainment, sports, finance, religion, politics, workplace, business and commercial activities.

Please read more on examples of technology here.


Generally, we have two forms (or types) of technology. These are:


1. Underdeveloped Technology

Underdeveloped technology refers to tools, devices, machines and equipment used in the old days, and will typically have lower qualities compared to its modern equivalent. Some of these underdeveloped technologies may even be considered as obsolete in modern times. They include well pulley, stone grinder, hourglass, transportation cart, quill pen, carbon paper, fax, typewriter, mud house, outhouse, bamboo house, audio and video cassette, walkman, catalog, use of firewood for cooking, kerosene lantern, steam locomotive, gunpowder, spear, animal skins for writing and so on.

You can read on belt and pulley drives here.


The table below shows some underdeveloped technology alongside their modern equivalents.


Underdeveloped Technology Developed Technology
Pulley wells Pumping machines
Transportation carts Cars, bus, aeroplanes
Canoe Ferries, ship and submarines
Stone grinder Blender
Firewood Cooking gas
Mud and bamboo house Mansions, duplex, bungalows
Hoe, shovels, cutlass and bolo

Please read on agricultural tools and their uses here.

Tractor, plough, harvesters, mowers, balers, irrigation sprinkler, cultivator and reapers
Local firearms and gun powder Beretta, glock, machine guns and bullets
Animal skin and parchment Books, ipads, text editors on computers
Stones for making fire Match, lighter, ferrocerium
Carbon paper Photocopying machine
Steam locomotive Electric and diesel locomotive
Audio and video casette Blue-ray disc, MP3, MP4
Hourglass Clock
Quill pen Ballpoint pen
Fax Email and social media messaging applications
Kerosene lamp Flashlight
Catalog Computer and cloud databases
Outhouse Water closet (WC) and flush toilet
Cathode ray tube in television LED and plasma screens in television


Please read the definitions of technology and their interpretations here.


2. Developed Technology

Developed technology refers to any new invention that offers improvement on an existing technology, and will consequently provide better solutions to man's challenges.

Generally, developed technology tend to improve the quality of our lives by making our work much easier and faster. As an instance, Len Academy is considered a developed technology with regards to education. In this regard, it improves the academic life of students and teachers from the comfort of their home and learning place.

You can attempt Len Academy questions and answers on various subjects here.


Developed technologies are often referred to as high quality technologies. They are produced in recent times and will typically have upgraded versions released. They are made to be more efficient with regards to energy consumption. However, they can be quite expensive.


Examples of developed technology include high end mobile devices, speed train, jets, spaceships, internet, agricultural machines, drugs, vaccines, various medical equipment, online stores, instant repay in sports, video assists referee (VAR) in football, well constructed roads, modern building structures, social media applications like google, facebook, youtube, twitter, bing and so on.

Please read interesting facts for students here.


The table below shows the differences between undeveloped and developed technology.

Undeveloped Technology Developed Technology
They are ancient technologies produced in the old days They are modern technologies produced in recent times.
They are regarded as low quality technology They are considered as high quality technology
They consume more energy They typically consume less energy
These technologies are often larger in size compared to their modern versions These technologies are smaller in size since they can be made up of high end materials and integrated circuits

Please read on computer hardware and their functions here.

They are often less expensive They are more expensive
They are usually slow and less efficient than developed technology They are faster and more efficient through their mechanism of action
They are not as sleek and beautiful when compared to developed technology They are often sleek and beautiful with great designs and finishes.
Some underdeveloped technologies are now obsolete Developed technologies are currently in use
Examples of underdeveloped technology include well pulley, audio cassette, kerosene lamps and stone grinder Examples of developed technology include smart phones and computers, automobiles, social media, internet and the world wide web.

Please read on the internet and world wide web here.


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Amazing facts in Basic Technology

Rubber bands - Len Academy

Rubber bands last longer when refrigerated

Lighter was invented before matches

Johann Wolfgang Dobereiner was credited with the invention of lighter in 1826 while the match was made 3 years later

Volkswagen group of companies own some of the top cars of the world. These are Audi, Bentley, Bugatti, Ducati, Lamborghini and Porsche

Notable points in Basic Technology

Arrowhead Lines - Len Academy

Arrowhead lines are lines with pointed edges at one or both ends. The pointed edges are in the form of an arrow.

Arrowhead lines are used:

  • At the end of dimensional lines.

  • As measurement lines.

Please read more on types of line here.

A thin continuous line could be a straight or curved line. However, the main point to remember is this: 'it is a tiny line with no dot or dashes within it'.


A thin continuous line is used for representing the followings:

  • Projection lines

  • Hatching lines

  • Construction lines

  • Short center lines

  • Measurement lines

  • Diagonal lines used to state plane surfaces

  • Intersections

  • Leader lines

  • Backside section lines

Any action that involves the servicing, checking, replacing and repairing of an equipment, object or device is termed maintenance.

Maintenance has two main goals. These are:

  1. To prevent a breakdown

  2. To repair the breakdown


Below are the types of maintenance:

  • Preventive maintenance

  • Corrective maintenance

  • Predictive maintenance

  • Periodic maintenance

  • Reinforcement

  • Overhaul

Please read more on maintenance here.


Softwoods are often derived from coniferous trees, that is: trees with needle-like leaves, and whose seeds are covered in cones.

Below are some characteristics of softwood:

  • Most softwood have lower densities than hardwood (weighs lower).

  • In terms of price, they are often less expensive than hardwood.

  • Their growth rate is faster than hardwood.

  • Most softwood do not shed their needle-like leaves during the year. However, the softwood 'larch' and 'cypress' are exceptions.

  • They are less fire resistant.

Please read on hardwood and softwood here

The diagram below shows the various types of line in technical drawing, their description and general application:

Type of Lines - Len Academy

Please read more on the types of line in technical drawing here