NCVT ITI Question Paper November 2020
Engineering Drawing (Annual 2nd Year )
2 Year Trades – Fitter, Turner, Machinist, MMV, RAC, Painter
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| NCVT ITI Question Paper Nov 2020 – Engineering Drawing |
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| NCVT ITI Question Paper Nov 2020 – ED- Annual 2nd Year-Fitter, Machinist, RAC |
NCVT ITI ED Question Paper Solution
Answer No 1 : Domed Cup Nut
नीचे दिए गए चित्र को देखकर Domed Cup Nut का Free Hand ड्राइंग बनायें |
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| DOMED CUP NUT |
About Domed Cup Nut :
Hexagon nut with a hemispherical top. Its function is similar to cap nut. It is available in 11 sizes from M6 to M24 diameter bolts/screw. They are made of steel, brass or aluminium alloy. It prevents corrosion and leakage of fluids from the threads.
Answer No 2 : SNAP HEAD RIVET
नीचे दिए गए चित्र को देखकर Snap Head Rivet का Free Hand ड्राइंग बनायें जिसका shank diameter 20 mm हो |
अत: d के स्थान पर 20 mm रखते हुए चित्र बनायें |
d = 20 mm
1.6d = 32 mm
0.125d = 2.5 mm
0.7d = 14 mm
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| SNAP HEAD RIVET |
Answer No 3 : Parabola Directrix Ordinate Method
नीचे दिए गए चित्र को देखकर Parabola Directrix Ordinate Method द्वारा बनाये |
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| Parabola Directrix Ordinate Method of Focus is at 50 mm |
Parabola Drawing Steps by Directrix Method of Focus is at 50 mm-
- Draw a vertical line D-D1 the directrix.
- Draw horizontal line XX1, the axis through any point X on the directrix.
- Mark the focus ‘F’ on XX1 = 50 mm from X (on the directrix).
- Mark the mid point of XF, as V.
- Mark a number of points from V towards right side on the axis as 1,2,3,4…..
- Draw vertical lines through these points as shown, forming double ordinates.
- Point ‘F’ as centre, X-1 as radius, draw arcs on the co-ordinates (vertical lines) passing through 1, mark points P1 & P1′.
- X-2 as radius, F as centre, draw arcs on the 2nd ordinate, mark P2 & P2′.
- Similarly get point P3, P4…. P3′, P4′ etc. on the axis as above.
- Join all the points with a smooth curve, by free hand and form the parabola curve.
Answer No 4 : Projection View of Bushed Journal Bearing Assembly
नीचे दिए गए चित्र की सहायता लेकर ड्राइंग के Front, Top and Side View बनाएं | यहाँ ड्राइंग 1st Angle में बनाया गया है क्युकि question में चित्र 1st Angle View में दिया हुआ है (3rd angle projection में भी बना सकते हैं ) |
*** लोगों को प्रश्न का चित्र देखकर संदेह हो सकता है कि Isometric View बनाना है, परन्तु ऐसा नही है | हमें तीनों Front, Top and Side View बनाने हैं जिसमे Shaft का diameter 30 mm हो | यहाँ Isometric View समझने के लिए बनाया गया है, इसे answer में बनाने की आवश्यकता नहीं है |
Projection View of Bushed Journal Bearing Assembly the Diameter of Shaft is 50 mm
More Details :
Bushed Journal Bearing Assembly का 3D View नीचे दिए गए चित्र में दिखाया गया है –
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| 3D View Bushed Journal Bearing Assembly |
Read Also :
- NCVT ITI Question Paper Nov 2020 – Engineering Drawing – Annual 1st Year – Fitter & Electrician
- ITI क्या है (About ITI) और इसमें प्रवेश कैसे लेते है |
- ITI Trade Fitter के बारे में जाने ( Description, Qualification, admission and jobs) |
- ITI Trade Machinist के बारे में जाने ( Description, Qualification, admission and jobs) |
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