TECHNOLOGY
GRADE 8
GET
NOVEMBER 2017
QUESTION 1
Choose the correct answer from those given below each question.
1.1 The input gear is also called the
A . Driver gear
B. Idler gear
C. Driven gear
D. Bevel gear
1.2
A switch is one example of a
A. Control device
B. Input device
C. Output device
D. Processing device
1.3
of
To reinforce the concrete, a ……………..is placed in the centre
the concrete.
A . Wood
B . Copper
C. Steel
D. Plastic
1.4 The machine that generates electricity
A . Generator
B . Gear train
C . Cell
D . Biofuel
1.5 Single third-class levers
A . Fishing rod
B . Wheelbarrow
C . Scissors
D . See-saw
[ 10 ]
QUESTION 2
Match the term in column A with the description in column B .
Write down the correct letter e.g 1.1 B
COLUMN A
COLUMN B
2.1 Battery
A . unable to bend
2.2 King post
B . To put things together
2.3 Rafter
C . Constructed into position
2.4 Resistance
D . An object used to contain
something
2.5 Idler gear
E . To raise or haul up
2.6 Rigid
F . An upright post in the centre
of a roof truss, from the tie
beam.
2.7 Assemble
G . Is two or more cells
connected together
2.8 Erected
H . Is the opposition of the
current in the circuit
2. 9 Receptacle
I . A beam forming part of the
internal framework of a roof.
2. 10 Hoisting
J . A gear between two spur
gears synchronising rotation of
the driver and driven gear.
[ 10 ]
QUESTION 3
3.1 Given driven gear A with 30 teeth and driver gear B with 15
teeth , answer the following questions.
3.1.1 If gear A turns one revolution , how many times will gear B
turn? Show your qualifications.
3.1.2 Which gear revolutions the fastest?
3.2 Use the given information to calculate the mechanical
advantage.
LOAD ARM=0.5M
LOAD FORCE = 1000N
EFFORT ARM = 1.5M
EFFORT FORCE = ?
HINT: effort = Load arm x Load force /Effort arm
[ 10 ]
QUESTION 4
Draw the symbol of the following electrical components:
4.1 Cell
4.2 Battery
4.3 Insulated wire
4.4 Switch
4.5 Bulb
4.6 Buzzer
4.7 Motor
4.8 Generator
4.9 Resistor
4. 10 Solar cell
[ 10 ]
QUESTION 5
Draw and label an electrical circuit with the following components :
Buzzer
Motor
Resistor
Two bulbs
Switch
Battery
[ 10 ]
TOTAL = 50X2 =100