{"id":4113,"date":"2023-10-06T09:45:07","date_gmt":"2023-10-06T09:45:07","guid":{"rendered":"http:\/\/localhost\/ecole9ja\/?p=4113"},"modified":"2023-10-06T09:52:37","modified_gmt":"2023-10-06T09:52:37","slug":"week-6-ss3-second-term-technical-drawing-td-notes","status":"publish","type":"post","link":"https:\/\/ecolebooks.com\/nigeria\/posts\/week-6-ss3-second-term-technical-drawing-td-notes\/","title":{"rendered":"Week 6 – SS3 Second Term Technical Drawing (TD) Notes"},"content":{"rendered":"

\u00a0WEEK SIX<\/strong>
\n\t\tTopic: Conventional representation of materials\/ Abbreviations.
\n<\/strong>Content:
\n<\/strong>(i) Engineering material symbols<\/p>\n

\u00a0Materials symbol
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\n\u00a0Electrical materials symbol
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\n\u00a0Plumbing \/ piping symbols.
\n<\/strong>Plumbing symbols: The tables below show examples of plumbing symbols used in engineering drawing.
\n\"\"\/<\/p>\n

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\n\u00a0Evaluation questions
\n<\/strong>1. Draw the conventional symbol of the following items: Kitchen sink, Water closet, Shower,Wash hand basin.
\n2. Draw the conventional symbol of the following items: Bath tub, Gate valve, Wood, Union valve and a reduced
\nElbow, Glass, Rubber.<\/p>\n

\u00a0Reading assignments<\/strong>
\n\t\tDrafting technology by W. Spence pages 541-542, 680.<\/p>\n

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\n\u00a0Weekend Assignment
\n<\/strong>\"\"\/Objective
\n<\/strong>1. Which of the plumbing symbols shown below depicts a water closet? <\/p>\n

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\n\u00a0\"\"\/2. What is the name given to the electrical symbols shown below? A. Colour meter. B. Distribution box. Fuse box.
\n B. Resistance box.<\/p>\n

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\n\u00a03. The electrical symbol shown below is called A. capacitor. B. transistor. C. diode. D. triode.
\n\"\"\/<\/p>\n

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\n\u00a03. Which of the following conventional symbols of electrical components represents a variable resistor?
\n4. The electrical circuit below shows A. resistor, bell and switch. B. switch, capacitor and bell. C. bell, transformer
\n\"\"\/and earth. D. earth, battery and switch.<\/p>\n

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\n\u00a05. What is the name of the symbol shown below?
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\n\u00a0Theory<\/strong>
\n\t\t1. Sketch the diagram of the following electrical components: Lightening arrester, Transformer, Fuse box
\n2. Draw the conventional symbol of the following items: Kitchen sink, Water closet, Shower and Wash hand basin. <\/p>\n

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\n\u00a0OTHERS
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\n\u00a0 A Twist drill
\nABBREVIATIONS
\n<\/strong>Across flats ……………………………………………………………………………………………….A\/F.
\nCenter to center ……………………………………………………………………………………………C\/C.
\nCenter line …………………………………………………………………………………………………..CL.
\nCountersunk …………………………………………………………………………………………………CSK.
\nCounterbore ………………………………………………………………………………………………… C’BORE.
\nPitch circle diameter ……………………………………………………………………………………..PCD.
\nUndercut ……………………………………………………………………………………………………… U’CUT.
\nSpotface ……………………………………………………………………………………………………… S’FACE.
\nStandard ……………………………………………………………………………………………………….STD.
\n\"\"\/Square (preceeding a dimension ) ………………………………………………………………………
\nDiameter ( preceeding a dimension) …………………………………………………………………. \u00f8<\/strong>
\n\t\tSquare (in a note) …………………………………………………………………………………………….SQ.
\n\"\"\/Taper, on diameter or width ……………………………………………………………………<\/p>\n

\u00a0Specification ………………………………………………………………………………………………….SPEC.
\nMaterial………………………………………………………………………………………………………… MATL.
\nDrawing ………………………………………………………………………………………………………DRG.
\n
\n\t\t\t<\/strong>\u00a0<\/p>\n","protected":false},"excerpt":{"rendered":"

\u00a0WEEK SIX Topic: Conventional representation of materials\/ Abbreviations. Content: (i) Engineering material symbols \u00a0Materials symbol…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,318],"tags":[],"class_list":["post-4113","post","type-post","status-publish","format-standard","hentry","category-posts","category-second-term-ss3-technical-drawing-td"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/posts\/4113","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/comments?post=4113"}],"version-history":[{"count":1,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/posts\/4113\/revisions"}],"predecessor-version":[{"id":4114,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/posts\/4113\/revisions\/4114"}],"wp:attachment":[{"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/media?parent=4113"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/categories?post=4113"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/tags?post=4113"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}