Jss 3 Basic Technology Questions

1. An example of preventive maintenance is: ___ (A) providing drainage on new road (B) replacing worn-out part of a bicycle (C) removing leaking zinc sheets in a building (D) changing under-sized bolts in a car (E) pumping a deflated tyre.
2. Driving tools exclude ___ (A) screw driver (B) hammer (C) punch (D) mallet (E) saw
3. Chairs, tables and beds require regular maintenance; as a result, the screws are tightened using: ___(A) hammers (B) file (C) punches (D) mallets (E) screwdrivers
4. The battery in a radio is kept active by _ (A) leaving the radio on at all times (B) cleaning the oxide deposits regularly and switching off when not in use (C) removing the batteries to dry off (D) supporting with flat batteries (E) servicing it by somebody who is not a technician.
5. The common cooking appliance suitable in rural areas which have no wood or electricity is the __ (A) gas cooker (B) electric cooker (C) kerosene stove (D) oven (E) microwaves
6. Electric kettles are better maintained by: ___ (A) waiting until the kettle begins to make noise (B) switching of when it boils (C) opening the spout for steam to escape (D) washing with soap and water (E) cutting off the wires
7. Which of the following should best be used together with a duster for dusting varnished wooden tables? (A) soap (B) petrol (C) paraffin oil (D) water (E) engine oil
8. A teaspoonful of __ should be added to the water used in boiling out new aluminium cooking pots to prevent discolouration. (A) salt (B) borax (C) milk (D) sand (E) oil
9. The property which causes a metal to return to its original shape after being bent or stretched is known as ___ (A) Conductivity (B) Ductility (C) Elasticity (D) Malleability (E) Plasticity
10. Ductility is the ability of a metal to __ (A) conduct electricity (B) conduct heat (C) resist elasticity (D) resist heat (E) be drawn to thin wire
11. This instrument is used for drawing vertical and incline line (A) rule (B) set square (C) compass (D) protractor (E) tee square
12. Metals are produced from ore by __  (A) welding (B) bending (C) smelting and casting (D) carbon method (E) making the ferrous
13. This known as fittings used in woodwork (A) nails (B) screws (C) pilot holes (D) counter sinking holes (E) hinges and locks
14. To make concrete, we __ (A) add water to cement (B) add water to sand (C) mix water, sand and cement proportionately (D) mix stone and cement (E) mix cement and sand
15. Food may be stored or preserved in the following except __ (A) oven (B) farm (C) refrigerator (D) bag (E) freezer
16. The basic material for producing ceramics is __ (A) rubber (B) manufactured board (C) clay (D) non ferrous metal (E) plastics
17. Any acute angle is ___ (A) less than 90^o (B) more than 45^o (C) more than 90^o less than 180^o (D) less than 90^o less than 180^o (E) is exactly 90^o
18.  Metal can be prevented from rusting by ­­­­­­­­­­­­­­­­­­­­­­­­­­__ (A) applying water on it (B) applying acid on it (C) rubbing oil on it (D) removing grease from it (E) heating it red hot
19. Which of the following is the two methods of seasoning wood __ (A) air and line (B) kiln and fire (C) air and kiln (D) kiln and line (E) air and fire
20.  In setting out of buildings, which of these is not used? (A) Shovel (B) Tape (C) Pegs (D) Ropes (E) Buildings plan.
21. The process through which the roots of the trees are being removed from the ground is called ___ (A) grubbing (B) excavation (C) builder’s square (D) farming (E) survey
22. The process of transferring the details of the plan of a building from drawings to the ground is called __ (A) walling (B) planning (C) foundation (D) concreting (E) setting out
23. An example of chemical spread over a construction site to get rid of termites is __ (A) coal tar (B) solignum (C) aldrin or deldrin dust (D) carbon or saw dust (E) lime wash or soda ash
24. The branch of engineering involves with the application of principles of science and technology to the research , design, manufacture and maintenance of highly sophisticated products such as aircrafts and space satellites is called ___ (A) computer engineering (B) petroleum engineering (C) aeronautical engineering (D) mining engineering (E) none of them
25. The process of cutting or splitting logs of wood into planks is known as ___ (A) felling of trees (B) seasoning of wood (C) conversion of wood (D) preservation of wood (E) sanding of wood
26.  Sawn timber can be made to remain useful for a long period by the use of ___ (A) abrasives (B) adhesives (C) plain sawn method (D) quarter sawn timber (E) preservatives
27.  One of this is not a wood preservative ___ (A) flint (B) paint (C) coal tar (D) creosote (E) French polish
28. In Nigeria the normal voltage in the PHCN line in residential houses is ___ (A) 100V(B) 110V (C) 200V (D) 220V (E) 320V.
29. Which of the following gives the correct definition of site preparation? ___ (A) the last work done by a contractor on a site before handing over to the owner (B) the fencing of the site (C) the initial operations carried out on a site so as to facilitate actual construction work (D) none of them (E) all of them
30. The tool for shearing cloth into pieces is called __ (A) knife (B) pair of scissors (C) needle (D) screw driver (E) pliers

Section (B)

1. (a). Define friction?

(b). State the four (4) laws of friction

(c). State two (2) advantages of friction

(d). State two (2) disadvantages of friction

(e). What is a lubricant?

2. (a). Mention six (6) common wood work joint

(b). Which of the woodwork joint is the easiest and simplest to use?

(c). What is the function of nails

(d). List four (4) types of nail you know

(e). List four (4) types of screws

(f). Give one (1) example of a fitting in woodwork

      3.   (a). List two (2) types of triangles

           (b). Sketch the two types of triangles mentioned above and state their properties

           (c). With the aid of a ruler and a pair of compasses construct a triangle ABC with base BC=

                  30mm and angle AB=60^o.