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Agen 112: Workshop Technology Question Paper

Agen 112: Workshop Technology

Course:Bachelor Of Science In Agriculture

Institution: Chuka University question papers

Exam Year:2013

CHUKA

UNIVERSITY

UNIVERSITY EXAMINATIONS
FIRST YEAR EXAMINATION FOR THE AWARD OF
DEGREE OF BACHELOR OF SCIENCE IN AGRICULTURE/BACHELOR OF SCIENCE ANIMAL SCIENCE/ BACHELOR OF SCIENCE HORTICULTURE
AGEN 112: WORKSHOP TECHNOLOGY
STREAMS: TIME: 2 HOURS
DAY/DATE: TUESDAY 6/8/2013 11.30AM – 1.30 PM
INSTRUCTIONS:

1. This paper contains seven (7) questions
2. Answer all questions in section A and any two questions in section b
3. Shown in parenthesis are marks for each question.

SECTION A:

QUESTION ONE

(a) Explain five (5) ways of preventing accidents in a workshop. [5 Marks]

(b) (i) What is the purpose of drawings to the metalworker. [1 Mark]

(ii) Line standards are important symbols wherever drawings are made and used. Illustrate five line standards. [2 ½ Marks]

QUESTION TWO

Describe two (2) ferrous metals and two (2) non-ferrous metals in common use. [8 Marks]

QUESTION THREE

(a) Explain the major uses of an engineer’s cold chisel. [3 Marks]

(b) Describe the following types of hammers.

(i) Ball-peen hammer [2 Marks]

(ii) Soft-face hammer [2 Marks]

QUESTION FOUR

(a) Determine the spindle speed required to finish turn 4 inch diameter aluminum alloy. [3 Marks]

(b) (i) What is the function of a bench vise? [1 Mark]

(ii) Name three principal types of mental-cutting power saws. [2 ½ Marks]

SECTION B:

QUESTION FIVE

(a) Describe the following types of threaded fasteners

(i) Machine screws [2 Marks]

(ii) Machine bolts [2 Marks]

(iii) Cap screws [2 Marks]

(iv) Set screws [2 Marks]

(v) Stud bolts [2 Marks]

(b) With the aid of diagrams, describe the following terms as used in sheet metal work.

(i) Hems [2 Marks]
(ii) Edges [2 ½ Marks]
(iii) Seams [2 ½ Marks]

(c) In milling machines, cutting fluids have three functions.

(i) _______________ [1 Mark]
(ii) _______________ [1 Mark]
(iii) _______________ [1 Mark]
QUESTION SIX

(a) (i) Describe soldering in metals. [3 Marks]

(ii) Explain the conditions that must be met before soldering. [4 Marks]

(b) (i) Describe are welding in joining metals [2 Marks]

(ii) With the aid of a diagram show the procedure of arc (electric) welding.
[5 Marks]

(c) Name and explain six non-threaded metal fastening devices. [6 Marks]

QUESTION SEVEN

(a) The drive to a machine is as follows: - A 400 mm pulley on the mainshaft drives a 300 mm countershaft pulley. From the countershaft a 300mm pulley drives a 320 pulley on the machine. If the mainshaft speed is 250rev/min; estimate the speed of the machine (a) without belt slop, (b) With 5% slip. [12 Marks]

(b) Explain the following mechanical properties of metals
(i) Brittleness [2 Marks]
(ii) Ductility [2 Marks]
(iii) Elasticity [2 Marks]
(iv) Malleability [2 Marks]
______________________________________________________________________________

Agen 112: Workshop Technology Question Paper

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