Basic Technology First Term Examination JSS 3

BASIC TECHNOLOGY QUESTIONS FOR JSS 3

Instruction: Answer all questions. Each question carries equal marks.

FILL-IN-THE-BLANK QUESTIONS

1. ______________ is the process of splitting or cutting wood into commercial or marketable sizes.
   (a) Latex (b) Synthetic (c) Wood conversion (d) Wood treatment
2. ______________ is the process of removing excess water from wood.
   (a) Wood treatment (b) Wood seasoning (c) Wood pressure (d) Wood immersion
3. Wood preservation is the process of prolonging the lifespan of wood by applying ______________.
   (a) Preservatives (b) Latex (c) Synthetic (d) Glue
4. We have natural methods of wood seasoning and ______________ methods of wood seasoning.
   (a) Kiln (b) Furnace (c) Heating (d) Pressure
5. We have tangential sawn, quarter sawn, and ______________ methods of wood conversion.
   (a) Tangent (b) Polygon (c) Plain sawn (d) Smooth sawn
6. ______________ is defined as the excess water in wet wood.
   (a) Mass content (b) Carbon content (c) Moisture content (d) Synthetic content
7. Any feature that reduces the quality and market value of timber is called ______________.
   (a) Seasoning (b) Conversion (c) Preservation (d) Defects
8. Man-made wood products that vary in size, weight, and structure are called ______________.
   (a) Manufactured board (b) Synthetic board (c) Adhesive board (d) Ceramic board
9. A mixture of two or more metals to form one metal is called ______________.
   (a) Alloy (b) Smelting (c) Casting (d) Iron ore
10. Ferrous metals contain ______________.
    (a) Latex (b) Ceramics (c) Iron (d) Thermoset
11. A country with underdeveloped technology makes use of ______________.
    (a) Telephone for communication (b) Fertilizer for farming
    (c) Drying for preserving grains (d) Refrigerator for preserving grains
12. The following are preventive maintenance practices except ______________.
    (a) Inspection (b) Adjustment (c) Repair (d) Lubrication
13. The following convert electrical energy into mechanical energy except ______________.
    (a) Electric blender (b) Table fan (c) Ceiling fan (d) Electric pressing iron
14. Which of the following goggles is used during arc welding?
    (a) Reflective goggles (b) Plain goggles (c) Dark goggles (d) Yellow goggles
15. Ceramic articles are made from ______________.
    (a) Mud and clay only (b) Cement and mud only
    (c) Cement and glass only (d) Cement, mud, and clay
16. Which of the following is a measuring tool?
    (a) Scriber (b) Screwdriver (c) Try square (d) Mallet
17. All of these are methods of processing plastic except ______________.
    (a) Calendaring (b) Extrusion (c) Rolling (d) Vacuum forming
18. ______________ is the source of all metals.
    (a) Iron ore (b) Alloy (c) Adhesives (d) Abrasives
19. Which of the following drawing instruments is used for drawing vertical and diagonal lines?
    (a) Tee square (b) Try square (c) Set square (d) Steel ruler
20. The process of doing things with a machine is called ______________.
    (a) Advanced process (b) Manual process (c) Mechanized process (d) Skilled process

CONTINUED QUESTIONS (21–80)

(Will follow the pattern above and focus on wood conversion, preservation, drawing tools, and maintenance topics to cover 80 questions).

EVALUATION QUESTIONS

1. Explain the process of wood conversion.
2. Differentiate between natural seasoning and kiln seasoning.
3. List three natural defects of timber.
4. Describe the kiln seasoning process.
5. What is the purpose of wood preservation?
6. Differentiate between ferrous and non-ferrous metals.
7. Explain how alloys are formed.
8. Sketch and label the parts of a try square.
9. Identify three methods of plastic processing.
10. Describe the mechanized process of production.
11. What are the uses of ceramic products in construction?
12. List five workshop hand tools and their functions.
13. Explain the steps involved in smelting metals.
14. What is the purpose of preventive maintenance?
15. Define deciduous trees and give two examples.
16. Differentiate between freehand sketching and scale drawing.
17. What is wood seasoning, and why is it important?
18. Identify three instruments used in measuring electrical components.
19. Describe the function of a tee square.
20. Differentiate between softwood and hardwood.

Multiple-Choice Questions

Wood Conversion and Seasoning

1. ___________ is the process of splitting or cutting wood into commercial or marketable sizes.
   (a) Latex (b) Synthetic (c) Wood conversion (d) Wood treatment
2. ___________ is the process of removing excess water in wood.
   (a) Wood treatment (b) Wood seasoning (c) Wood pressure (d) Wood immersion
3. ___________ is the process of prolonging the lifespan of wood by applying preservatives.
   (a) Latex (b) Glue (c) Wood preservation (d) Paint
4. The natural method of wood seasoning is also called ___________.
   (a) Kiln drying (b) Air seasoning (c) Vacuum forming (d) Heating method
5. Which of the following is NOT a method of wood conversion?
   (a) Plain sawn method (b) Quarter sawn method (c) Tangential sawn method (d) Dry sawn method
6. ___________ can be defined as excess water in wet wood.
   (a) Mass content (b) Carbon content (c) Moisture content (d) Synthetic content
7. Any feature that reduces the quality and market value of timber is called ___________.
   (a) Defects (b) Seasoning (c) Conversion (d) Polishing
8. ___________ is a man-made wood product that varies in size, weight, and structure.
   (a) Manufactured board (b) Adhesive board (c) Synthetic board (d) Plastic board
9. ___________ is an example of a preservative used for wood treatment.
   (a) Iron (b) Oil (c) Tar (d) Glue
10. Kiln seasoning is a ___________ method of wood seasoning.
    (a) Natural (b) Artificial (c) Chemical (d) Traditional

Processing and Defects in Timber

11. Which of the following is a natural defect in timber?
    (a) Insect attack (b) Painting (c) Heat bending (d) Knot removal
12. Tangential sawn method of wood conversion results in ___________.
    (a) Irregular grains (b) Stronger wood (c) Decorative patterns (d) Weak fibers
13. ___________ is a method of applying preservatives to wood.
    (a) Spraying (b) Cooking (c) Freezing (d) Heating
14. ___________ is an example of artificial wood.
    (a) Cement (b) MDF board (c) Sand (d) Hardwood
15. ___________ reduces the natural defects in timber.
    (a) Overheating (b) Proper seasoning (c) Drying in sunlight (d) Glue application
16. Natural defects in timber include ___________.
    (a) Grain warping (b) Heart shake (c) Smooth texture (d) Splitting
17. The drying of wood improves its ___________.
    (a) Flexibility (b) Stability (c) Freshness (d) Water content
18. ___________ is a defect caused by improper wood seasoning.
    (a) Knot (b) Heart shake (c) Split (d) Shrinkage
19. Preservatives in wood treatment help to protect against ___________.
    (a) Air (b) Water loss (c) Insects (d) Excess seasoning
20. The main purpose of seasoning wood is to ___________.
    (a) Strengthen the fibers (b) Remove excess moisture (c) Add preservatives (d) Reduce size

Metals and Ceramics

21. The process of extracting metals from their ores is called ___________.
    (a) Casting (b) Smelting (c) Mining (d) Welding
22. Ferrous metals contain ___________.
    (a) Ceramics (b) Iron (c) Wood (d) Plastic
23. An alloy is a mixture of ___________.
    (a) Two or more metals (b) Metals and water (c) Metals and wood (d) Metal and plastic
24. ___________ is NOT a metal product.
    (a) Copper (b) Steel (c) Glass (d) Aluminum
25. The process of pouring molten metal into a mold is called ___________.
    (a) Forging (b) Smelting (c) Casting (d) Heating
26. Which of the following is a non-ferrous metal?
    (a) Steel (b) Aluminum (c) Cast iron (d) Pig iron
27. ___________ is a property of ferrous metals.
    (a) Resistance to rust (b) Magnetic property (c) Soft texture (d) Transparency
28. Ceramic products are made from ___________.
    (a) Cement and clay (b) Sand and gravel (c) Iron and steel (d) Glass and water
29. The process of shaping ceramics on a rotating wheel is called ___________.
    (a) Casting (b) Potter’s wheel method (c) Pinching (d) Molding
30. ___________ is NOT a ceramic product.
    (a) Glass cups (b) Blocks (c) Plastic chairs (d) Clay pots

Tools and Measuring Instruments

31. ___________ is used for drawing horizontal lines.
    (a) Set square (b) Tee square (c) Divider (d) Ruler
32. An instrument for measuring current is ___________.
    (a) Ammeter (b) Ohmmeter (c) Voltmeter (d) Micrometer
33. ___________ measures resistance in electrical circuits.
    (a) Multimeter (b) Barometer (c) Caliper (d) Potentiometer
34. The unit of electric current is ___________.
    (a) Watt (b) Newton (c) Ampere (d) Joule
35. A professional responsible for building plans is called ___________.
    (a) Civil engineer (b) Architect (c) Quantity surveyor (d) Mechanical engineer
36. The stock and blade of a tee square form an angle of ___________.
    (a) 30° (b) 60° (c) 90° (d) 180°
37. The binding agent in concrete is ___________.
    (a) Cement (b) Sand (c) Water (d) Clay
38. A tool used for measuring angles in drawings is ___________.
    (a) Protractor (b) Divider (c) Caliper (d) Compass
39. Try square is used for ___________.
    (a) Checking right angles (b) Smoothing surfaces (c) Cutting metal (d) Filling gaps
40. ___________ is used to join two metals permanently.
    (a) Welding (b) Nuts and bolts (c) Clamps (d) Screwdrivers

Engineering Practices and Maintenance

41. Mechanized processes involve ___________.
    (a) Manual labor (b) Machines (c) Crafts (d) Natural tools
42. Corrective maintenance is performed ___________.
    (a) Before a breakdown (b) After a breakdown (c) During use (d) Monthly
43. Preventive maintenance includes ___________.
    (a) Repairs (b) Inspection (c) Emergency fixes (d) Breakdown checks
44. A lubricant is used to ___________.
    (a) Prevent friction (b) Increase speed (c) Reduce size (d) Add heat
45. All the following are electrical devices EXCEPT ___________.
    (a) Ceiling fan (b) Table fan (c) Electric iron (d) Mechanical hammer
46. ___________ goggles are used in arc welding.
    (a) Dark (b) Reflective (c) Clear (d) Polarized
47. ___________ is the process of drawing without instruments.
    (a) Freehand sketching (b) Isometric drawing (c) Perspective drawing (d) Orthographic drawing
48. ___________ trees are also called softwoods.
    (a) Evergreen (b) Deciduous (c) Coniferous (d) Hardwood
49. The tee square is commonly used in ___________.
    (a) Electrical works (b) Technical drawing (c) Woodwork (d) Mechanics
50. ___________ is a measuring tool used in woodworking.
    (a) Scriber (b) Mallet (c) Try square (d) Chisel

Technical Drawing and Design

51. The most commonly used type of line in technical drawing is the ___________ line.
    (a) Zigzag (b) Straight (c) Broken (d) Curved
52. Orthographic projection represents an object in ___________.
    (a) 1D (b) 2D (c) 3D (d) Freehand
53. ___________ is the method of representing an object as it appears to the eye.
    (a) Perspective drawing (b) Isometric drawing (c) Orthographic drawing (d) Oblique drawing
54. A 45° set square is used to draw ___________.
    (a) Horizontal lines (b) Vertical lines (c) Angles (d) Parallel lines
55. ___________ is used for reducing or enlarging the size of a drawing.
    (a) Scale (b) Compass (c) Divider (d) Protractor
56. The drawing sheet most commonly used in technical drawing is ___________.
    (a) A3 (b) A2 (c) A4 (d) A1
57. ___________ is used to draw arcs and circles.
    (a) Divider (b) Compass (c) Scale (d) Set square
58. The imaginary line drawn to help measure the size of an object is called a ___________.
    (a) Construction line (b) Projection line (c) Dimension line (d) Center line
59. ___________ is used to sharpen pencils for technical drawings.
    (a) Pencil pointer (b) Ruler (c) Sharpener (d) Cutter
60. Isometric drawings show an object in ___________ dimensions.
    (a) One (b) Two (c) Three (d) Four

Building Technology

61. ___________ is a mixture of cement, sand, and water used in construction.
    (a) Concrete (b) Mortar (c) Gravel (d) Paste
62. The vertical load-bearing part of a building is the ___________.
    (a) Foundation (b) Beam (c) Column (d) Roof
63. ___________ is a tool used to check the level of a surface.
    (a) Plumb line (b) Spirit level (c) Try square (d) Measuring tape
64. Which of the following is a type of roof design?
    (a) Conical roof (b) Hexagonal roof (c) Gable roof (d) Structural roof
65. The binding agent in concrete is ___________.
    (a) Gravel (b) Sand (c) Cement (d) Water
66. ___________ is the first step in constructing a building.
    (a) Roofing (b) Plastering (c) Foundation laying (d) Painting
67. Bricks are made from ___________.
    (a) Sand and water (b) Clay and sand (c) Clay and cement (d) Gravel and water
68. A material used for heat and sound insulation in buildings is ___________.
    (a) Glass (b) Foam (c) Concrete (d) Aluminum
69. ___________ is the topmost part of a building that covers it.
    (a) Beam (b) Roof (c) Wall (d) Foundation
70. The process of joining bricks with cement is called ___________.
    (a) Mortaring (b) Plastering (c) Welding (d) Paving

Simple Machines

71. A simple machine with a rigid bar and pivot point is called a ___________.
    (a) Pulley (b) Inclined plane (c) Lever (d) Wedge
72. The fixed point on a lever is called the ___________.
    (a) Load (b) Effort (c) Fulcrum (d) Pivot
73. ___________ is an example of a first-class lever.
    (a) Nutcracker (b) See-saw (c) Wheelbarrow (d) Crowbar
74. The mechanical advantage of a machine is the ratio of ___________.
    (a) Load to effort (b) Force to time (c) Speed to distance (d) Work to energy
75. ___________ is an example of a wheel and axle.
    (a) Screwdriver (b) Pulley (c) Crowbar (d) Knife
76. An inclined plane helps reduce ___________.
    (a) Distance (b) Work done (c) Force required (d) Energy wasted
77. ___________ is an example of a wedge.
    (a) Knife (b) Rope (c) Wheelbarrow (d) Screw
78. The pulley is used to ___________.
    (a) Reduce distance (b) Multiply speed (c) Change direction of force (d) Add weight
79. A ___________ is used for tightening or loosening bolts.
    (a) Spanner (b) Screwdriver (c) Pliers (d) Knife
80. A screw is a simple machine that converts ___________.
    (a) Force into speed (b) Rotational motion into linear motion (c) Linear motion into rotational motion (d) Speed into force