Basic Technology

Len Academy questions for Basic Technology JSS2, 2nd Term, Part 2

len Alfred Ajibola - Thu, 06th June, 2019 @ 07:32: AM

Topics in Basic Technology

Ceramics: Types of Ceramics Advantages and Disadvantages of Chain drives Len Academy Questions for Basic Technology JSS3, 2nd Term, 2020 Len Academy Question for Basic Technology, JSS3, 2nd Term, 2020, Part 2 Belt and Pulley Drives: Types of Belt in Belt Drives Electromechanical Energy: Parts of the Refrigerator and how they operate Chain Drive, Types, Classifications, Advantages and Disadvantages 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 Maintenance, Types of Maintenance Hardwood and Softwood - Characteristics and Examples What are Ceramics? Characteristics of Ceramics


Academic Questions in Basic Technology

Please check out our Test Your Knowledge page to see all Questions and Answers

Which of the following is not a type of maintenance?

  • A. Fixated

  • B. Overhaul

  • C. Predictive

  • D. Reinforcement

  • E. Periodic

  • F. Corrective

Which of the following is incorrect concerning preventive maintenance?

  • A. It is considered to be the best form of maintenance

  • B. Immunization is a form of preventive maintenance

  • C. Worn out parts may be discovered when preventive maintenance is carried out

  • D. Preventive maintenance is defined as the repairs carried out on an equipment or object after a correct prediction of an impending fault

  • E. A person who services his car monthly practices preventive maintenance (even though the car functions properly)

  • F. The main goal of preventive maintenance is to stop a device from breaking down suddenly

The following statements are true concerning wood except _____.

  • A. It is an inorganic material

  • B. It is a structural tissue

  • C. It is composed mainly of cellulose

  • D. Hardwood and Softwood are types of wood

  • E. It constitutes the stems and branches of trees

  • F. It is porous and fibrous

Which of the following is not a characteristic of hardwood?

  • A. They are more fire resistant in comparison to softwood

  • B. Their stem are divided into trunks called dendritic form

  • C. Birch, Teak and Alder are examples of hardwood

  • D. They always have a higher density than softwood of the same mass

  • E. They are suitable for making deckings in buildings

  • F. Most hardwood are expensive than softwood

The outermost covering of a wood is called the _____.

  • A. Wood skin

  • D. Heartwood

  • C. Cortex

  • D. Cambium

  • E. Sclerenchyma

  • F. Bark

The followings are characteristics of ceramics except _____.

  • A. They readily undergo oxidation

  • B. They have high melting point

  • C. They are durable

  • D. Most are insulators but graphite is a conductor of electricity

  • E. Most are non-magnetic

  • F. They have great tensile strength but graphite is soft

Which of the following statement is false of ceramics?

  • A. They are not metals

  • B. They are not plastics

  • C. Ceramics can be absolutely defined by its products characteristics

  • D. Ceramic materials are not organic in nature

  • E. Ceramics are refractory in nature

  • F. Ceramics materials are usually made from clay

Which of the following is not a function of thin continuous line in Technical drawing?

  • A. Used for representing projection lines
  • B. Used as construction lines
  • C. Used for representing visible outline and edges
  • D. Used for representing leader lines
  • E. Used as intersection lines
  • F. Used as measurement lines

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Basic Technology questions, JSS2, 2nd Term Continued:

Please read Questions 1 - 30 here.

31. Vices are _______ tools.

  1. Boring
  2. Percussion
  3. Holding
  4. Marking out

 

32. Which of the following is NOT true regarding combination pliers?

  1. They can be used for cutting
  2. They are used for holding flat metals
  3. They are used for holding round objects
  4. They can be used to tighten screw

 

33. Switches are made from _______

  1. Thermoset
  2. Thermoplastics
  3. Natural rubber
  4. Synthetic rubber

 

34. Which of the following is NOT an electro-mechanical energy appliance?

  1. Soldering iron
  2. Refrigerator
  3. Fruit blender
  4. Electric fan

 

35. A charcoal pressing iron is a/an _______ energy based appliance.

  1. Electrical
  2. Mechanical
  3. Chemical
  4. Electro-mechanical

 

36. Which of the following is NOT a part of an electric motor?

  1. Frame
  2. Rotor
  3. Gear box
  4. Shaft

 

37. A motor operates on the principle of _______ induction.

  1. Chemomagnetic
  2. Electromagnetic
  3. Mechanomagnetic
  4. Photomagnetic

 

38. An element used in transmission lines is _______.

  1. Sodium
  2. Aluminium
  3. Calcium
  4. Potassium

 

39. The control equipment for supplying electricity to a building is composed of the followings EXCEPT _______.

  1. Energy meter
  2. Busbar
  3. Sealing box
  4. Distribution board

 

40. The following can be used for cutting metal to size EXCEPT _______.

  1. Chisel
  2. Flame saw
  3. Power saw
  4. Hack saw

 

41. The form of energy involved in pulling and pushing is _______.

  1. Mechanical
  2. Force
  3. Chemical
  4. Nuclear

 

42. _______ take out nails in woodwork.

  1. Pliers
  2. Pincers
  3. Chisel
  4. Punch

 

43. A _______ converts electrical to sound energy.

  1. Microphone
  2. Loudspeaker
  3. Antenna
  4. Radio receiver

 

44. Electric power is measured with a/an _______.

  1. Wattmeter
  2. Voltmeter
  3. Ohmmeter
  4. Galvanometer
  5. Please read on Derived Unit for a clue to the correct Answer.

 

45. A fuel will NOT include _______.

  1. Hydrogen gas
  2. Sawdust
  3. Methane
  4. Charcoal

You can read on some Interesting Facts for Students here.

46. Thermionic emission is also known as _______ emission.

  1. Secondary
  2. Primary
  3. Cold cathode
  4. Photoelectric

 

47. Which of the following will NOT be present in a complete circuit?

  1. Tester
  2. Switch
  3. Conductor
  4. Bulb

 

48. The following professions are related to Basic Technology EXCEPT _______.

  1. Accountancy
  2. Wood worker
  3. Civil engineering
  4. Surveying

 

49. The type of current flowing in our homes to operate home appliances is known as _______.

  1. Direct
  2. Alternative
  3. Alternating
  4. Indirect

 

50. A/An _______ converts electrical energy to mechanical energy.

  1. Transformer
  2. Inverter
  3. Generator
  4. Motor

 

51. Which of these should be avoided in the workshop?

  1. Handling hot metal with a tong
  2. Chisel with mushroom head
  3. Use of googles when welding
  4. Helmet during construction work

 

52. Which of the following processes will NOT produce holes in metals?

  1. Welding
  2. Drilling
  3. Boring
  4. Punching

 

53. The amplifier used in an analog system is called a _______.

  1. Repeater
  2. Channel
  3. Circuit
  4. Carrier

 

54. When a force of 30N travels through a distance of 10m, what is the work done?

  1. 3 watts
  2. 3 joules
  3. 300 watts
  4. 300 joules

 

55. 6cm is equivalent to _______ kilometers.

  1. 600000
  2. 6000
  3. 600
  4. 0.006

 

56. Calculate the potential energy of a 60kg man standing on a wall 30m tall from the ground. (g = 10ms-2).

  1. 180J
  2. 1800J
  3. 18KJ
  4. 18000KJ

 

57. A car travels with a speed of 60ms-1 for 25s. What is the distance covered by the car?

  1. 2.4m
  2. 85m
  3. 35m
  4. 1500m

 

58. Which of the following is FALSE regarding a trapezium?

  1. It has only two parallel sides
  2. The diagonal intersects each other to give equal and opposite angles
  3. The length of its parallel sides are equal
  4. Two diagonals divides it into four triangles

 

59. Current flows through a path called _______.

  1. Electric route
  2. Electric circuit
  3. Conductor channel
  4. Conductor pipes

 

60. An ICT equipment machine will NOT include _______.

  1. Calculator
  2. Mobile phone
  3. Electric fan
  4. Fax

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Alfred Ajibola is a Medical Biochemist, a passionate Academician with over 7 years of experience, a Versatile Writer, a Web Developer, a Cisco Certified Network Associate and a Cisco CyberOps Associate.


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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 actual 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

Preventive maintenance is carried out routinely on a device even though no apparent fault may be present on such device.

The goal of preventive maintenance as the name suggest is to prevent a sudden breakdown on a device or equipment.

As an instance, a person who services his or her car monthly even though the car is still able to function correctly is said to be carrying out preventive maintenance on the car.

In the course of a preventive maintenance, worn out parts may be discovered and replaced as soon as possible. Also, there may be a change of oil while other little adjustments may also be carried out.

We can even carry out preventive maintenance on our body to prevent certain diseases. For this reason, some persons have discovered cancerous cells in their body through regular medical checkup; and were able to kill such cells before they become malignant.

As a matter of fact; immunization is a form of preventive maintenance.

Please read more on Immunization here.

Please read more on maintenance and types of maintenance here

Hardwood - Len Academy

Hardwoods are derived from angiosperms. They show the following characteristics:

  1. They usually have a higher density than softwood. Balsa is an exception.

  2. They are usually more expensive than softwood.

  3. They grow at a slower rate than softwood.

  4. Hardwood trees shed their leaves in certain times of the year.

  5. Hardwood are more fire resistant than softwood.

  6. The leaves of hardwood trees are evergreen.

  7. They are used for making quality furniture (in terms of strength). They are also suitable for decking in buildings.

  8. Hardwood trees always have divided trunks which are sometimes referred to as a dendritic form.

  9. In terms of price, hardwood are usually more expensive than softwood.

Examples of hardwood include iroko, ash, beech, alder, teak, birch, mahogany, maple, oak, balsa and walnut.

Please read more on hardwood vs softwood here

Ceramics are refractory. They also require a very high amount of heat and subsquent cooling to be formed.

Being refractory means that they are capable of withstanding a variety of abuses like high temperatures and chemical attacks.

Ceramics are generally made by taking clay from the ground and mixing it with water. It is then shaped into any form and fired inside an oven (called kiln) at a very high temperature. They may then be decorated with a waterproof, paint-like substances called glazes.

Please read more on ceramics here

Ceramics may have constrasting physical and chemical properties (or characteristics); but in general,

  1. They have high melting points.

  2. They are heat resistant.

  3. They can be very hard with great strength; although a few are brittle or soft; for example, graphite.

  4. They are durable (last for a long time).

  5. Most are electrical insulators (cannot conduct electricity) but; graphite is an electrical conductor.

  6. They are chemically unreactive or inert.

  7. They are not easily oxidized.

  8. Most are non-magnetic.