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Se

[ror Performance Measurement

ZIMBABWE SCHOOL EXAMINATIONS COUNCIL

General Certificate of Education Advanced Level

AGRICULTURE ENGINEERING 6048/2

PAPER 2 Theory
SPECIMEN PAPER 2 hours 30 minutes

Additional materials:
Answer paper,
Ruler,
Scientific calculator.

TIME 2 hours 30 minutes

INSTRUCTIONS TO CANDIDATES FOR EXAMINER’S USE
Write your name, Centre number and candidate number in the
spaces at the top of this page and on any separate answer paper SECTION A
used.
Section A 1
Answer all questions.
Write your answers in the spaces provided on the question paper. 2
Section B
Answer any two questions on the separate answer paper provided. 3
Your answers must be in continuous prose, where appropriate.
At the end of the examination, fasten any separate answer paper 4
used securely to the question paper.

All working for numerical answers must be shown.

5
INFORMATION FOR CANDIDATES

6
The intended number of marks is given in
brackets [ ] at the end of each question or part SECTION B
question.
The quality of your language will be taken into
account in the marking of your answers.

TOTAL

This question paper consists of 9 printed pages and 3 blank pages.

Copyright: Zimbabwe School Examinations Council, Specimen Paper.
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SECTION A [60 marks] Examines's

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1. (a) Explain three reasons for cooling the engine.
(b) — Suggest three factors affecting the rate of engine cooling.

(©) Suggest any four possible causes of overheating in an engine.

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(b) Describe any one lubrication system.
( @ Describe any two advantages of force feed lubrication system.

(ii) Explain any two factors that affect the efficiency of a lubricating
system.

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(a) _ Describe the operational functions of a planter. ard

(b) —_ Outline the routine maintenance of a knapsack sprayer.

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(a) Explain any three aims of the Environmental Impact Assessment (EIA)
in Zimbabwe.

(b) Suggest three environmental factors managed in green houses.

(©) Describe the significance of surveying for agricultural projects.

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(©)

6
Define the term Integrated Water Management (IWM).

Outline the principles of integrated water management which should be
considered in water conservation.

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The following cost estimates averaged over a period of three years on an existing and
new farm tractor.

Overheads Existing tractor New tractor
$ $

Depreciation 485 742
Interest 342 644
Insurance 45 59
Road licence 74 74
Total each year 946 1519
Running costs $ $
Fuel and lubricants 0.69 0.62
Repairs and maintenance 1.24 0.56
Labour 1.55 1.55
Total each year 3.48 2.73
(a) @ Carry out a break even analysis to determine the suitable point to

replace the existing tractor.

(ii) Define the following terms:

overhead,

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(a)
(b)

(a)
(b)

(a)
(b)

(a)

(b)

SECTION B
Discuss the benefits of farm mechanisation to Zimbabwe. [10

Discuss the possible limitations of farm mechanisation and suggest steps
which can be taken to ensure the success of the mechanisation

programmes. [10
[T otal: 20]
Discuss the problems of excessive heating of an engine. [6

Describe the air and water cooling systems of engines considering their merits

and demerits. 14
[Total: 20]
Discuss significance of computerizing an irrigation system on a farm 15

Suggest other areas on the farm where the farmer can use computer
applications to his benefit. 5]
(Total: 20]

Complete a cashflow budget for six months ending 31 December 2017, fora
company starting with a balance in hand of $3 990.
Credit transactions are as follows

Purchases Sales
$ $
July 9 800 18 600
September 9 300 20 000
October 9 000 20 700
November 12 800 21 300
December 14 600 27 900

Monthly salaries and wages add up to $8 000.

Other monthly cash expenses are estimated as $2 100 to the end of September
and $2 700 afterwards.

A dividend of $5 300 is due in August and a capital investment in a new
machine of $5 600 is planned for December. [10]

Describe advantages of cash flow planning. [10]

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