Mock exam paper C Ordinary Level Marking Scheme

PRE-JUNIOR CERTIFICATE EXAMINATION, 2013

MATERIALS AND TECHNOLOGY

METALWORK

Marking Scheme and Solutions

Ordinary level

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MAKE SURE TO WRITE YOUR EXAMINATION NUMBER IN THE

BOX PROVIDED ON THIS PAGE

1

http://www.technologystudent.com/images2/mcdrill2.gif

Question 1 -40 marks

SECTION A - 20 MARKS

ANSWER ANY TEN QUESTIONS FROM THIS SECTION

This machine is a :

Hand Drill

Pillar Drill

Lathe

Strip Heater

2

http://www.tru-stone.com/images/counterboredHole.jpg

This hole is a :

Pilot Hole

Blind Hole

Countersunk

Counter bored

3

mr31$009

This tool is a :

Punch Mark

Drill Bit

Hammer

Square

4

ap04$010

This lathe process is :

Knurling

Facing

Taper Turning

Parallel Turning

5

This force is:

Torsion

Bending

Tension

Compression

6

ag29$001

This type of motion is known as:

Linear

Rotary

Oscillating

Reciprocating

7

http://1.bp.blogspot.com/-L6Tk0m2XzPk/TayWGR_RXcI/AAAAAAAAFbA/_zNDy15G_Cg/s1600/12.jpg

This safety sign represents:

Wear Goggles

Wear Hard Hat

Flammable

Danger Electricity

8

Which one of the four options is NOT part of the design loop:

Problem Analysis

Investigation

Buying

Evaluation

9

mr31$009

This callipers is known as:

Odd leg

Vernier

Internal

External

10

https://encrypted-tbn3.gstatic.com/images?q=tbn:ANd9GcSzvpSPaqhwupZprxJN37ocbJ-SpT-7cRvebDncDfRErHtFqoOxaw

This electronic symbol represents a:

Buzzer

LED

Bulb

LDR

11

mr31$011

This hole is known as a:

Countersink

Pilot

Counterbored

Blind

12

http://www.karts.com.au/images/KVS.JPG

What type of head does the screw have:

Countersunk

Pan Head

Philips

Counterbored

Question 1B – Answer all 5 parts of this question. FOUR marks each (20 marks)

  1. Name 3 other household items which use rotary motion to function:

Ceiling Fan

  1. Washing Machine
  1. Fan Oven
  1. Blender
  1. Briefly describe what is the function of the inlet valve in a petrol engine:

This admits the fuel mixture into the cylinder.

  1. Name any FOUR mechanisms found on a bicycle:

1 Chain & Sprocket

2 Break LEVERS

3 Bicycle Calliper uses Bell Cranks

4 Pistons in shock absorbers.

(D)

  1. Bronze is an alloy of what two materials:
  1. Brass is an alloy of what two materials:

ANS: Copper & Tin

ANS: Copper & Zinc

(E)

https://encrypted-tbn1.gstatic.com/images?q=tbn:ANd9GcQQys3dUC2UDWLLXLc1qs9eILkxEYBE8RPMCDHPrihehCzgqIGd

(I)The figure shows a method of saving electricity. Name the item & briefly explain how it saves energy.

(ii) Name 2 other ways of saving energy in the household:

NAME: Energy Saving Lightbulb

EXPLAIN: Draws less electrical current from the household supply.

  1. Turning off lights & other electri...

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