MACHAKOS UNIVERSITY
SCHOOL OF ENGINEERING AND TECHNOLOGY
DEPARTMENT OF MECHANICAL & MANUFACTURING
ENGINEERING
FIRST YEAR SECOND SEMESTER EXAMINATION FOR DIPLOMA IN
BUILDING & CIVIL ENGINEERING
WORKSHOP TECHNOLOGY-MECHANICAL
INSTRUCTIONS TIME:
This paper consists of five questions, attempt ALL .
1 (a). Describe the procedure of marking out a work piece (7Marks)
(b). Using neat sketches illustrate the following measuring instruments giving their use;
I. Vernier calliper
II. Micrometer
III. steel rule
IV. Divider (8Marks)
(c).Mention six classifications of hand tools giving examples of each. (5Marks)
2(a).Using neat diagram show parts of lathe machine giving function of each part. (10Marks)
(b).Describe Five lathe operations with aid of neat sketches (10marks)
3 (a) . Describe the parts and principle of operation of the following pumps;
i. Centrifugal ( 7Marks)
ii. Reciprocating ( 8 Marks)
(b) Explain why centrifugal pumps are widely used in most typical applications (5Marks)
4 . (a) .Name Six ways of classifying internal combustion engines (6marks)
(b)Differentiate between a four stroke and two stroke engines . (8marks)
(c)Mention Six common maintenance checks when serving engines. (6Marks)
5 (a). Explain how quick return mechanism is achieved in a shaper machine. (10Marks)
(b).With aid of neat sketches describe Five drilling operations. (10marks)
, WORKSHOP TECHNOLOGY BCEMarking scheme
1(a) Marking out or layout means the process of transferring a design or pattern to a
workpiece, as the first step in the manufacturing process.
Steps.
• Choose marking out tool
• Prepare the work piece
• Establish the datum
• Using marking out tools transfer the design to the workpiece
(b). Measuring instruments
Vernier Caliper is a precision instrument that can be used to measure internal and external
distances extremely accurately.
Micrometer
Micrometer screw gauge is used for measuring extremely small
dimensions.
SCHOOL OF ENGINEERING AND TECHNOLOGY
DEPARTMENT OF MECHANICAL & MANUFACTURING
ENGINEERING
FIRST YEAR SECOND SEMESTER EXAMINATION FOR DIPLOMA IN
BUILDING & CIVIL ENGINEERING
WORKSHOP TECHNOLOGY-MECHANICAL
INSTRUCTIONS TIME:
This paper consists of five questions, attempt ALL .
1 (a). Describe the procedure of marking out a work piece (7Marks)
(b). Using neat sketches illustrate the following measuring instruments giving their use;
I. Vernier calliper
II. Micrometer
III. steel rule
IV. Divider (8Marks)
(c).Mention six classifications of hand tools giving examples of each. (5Marks)
2(a).Using neat diagram show parts of lathe machine giving function of each part. (10Marks)
(b).Describe Five lathe operations with aid of neat sketches (10marks)
3 (a) . Describe the parts and principle of operation of the following pumps;
i. Centrifugal ( 7Marks)
ii. Reciprocating ( 8 Marks)
(b) Explain why centrifugal pumps are widely used in most typical applications (5Marks)
4 . (a) .Name Six ways of classifying internal combustion engines (6marks)
(b)Differentiate between a four stroke and two stroke engines . (8marks)
(c)Mention Six common maintenance checks when serving engines. (6Marks)
5 (a). Explain how quick return mechanism is achieved in a shaper machine. (10Marks)
(b).With aid of neat sketches describe Five drilling operations. (10marks)
, WORKSHOP TECHNOLOGY BCEMarking scheme
1(a) Marking out or layout means the process of transferring a design or pattern to a
workpiece, as the first step in the manufacturing process.
Steps.
• Choose marking out tool
• Prepare the work piece
• Establish the datum
• Using marking out tools transfer the design to the workpiece
(b). Measuring instruments
Vernier Caliper is a precision instrument that can be used to measure internal and external
distances extremely accurately.
Micrometer
Micrometer screw gauge is used for measuring extremely small
dimensions.
