Engineering Graphics Fundamentals

What are the three principal views in orthographic projection?

ऑर्थोग्राफ़िक प्रक्षेपण में तीन प्रमुख दृश्य क्या हैं?

• Back view, bottom view, isometric view/ पीछे का दृश्य, बॉटम दृश्य, समितिय दृश्य

• Perspective view, front view, rear view/केन्द्रीय दृश्य,सामने का दृश्य ,पीछे का दृश्य

• Top view, bottom view, diagonal view/ऊपरी दृश्य, बॉटम दृश्य,विकर्णदृश्य

• Front view, top view, side view/फ्रंट दृश्य,टॉप दृश्य,साइड दृश्य

What is the purpose of dimensioning in engineering graphics?

इंजीनियरिंग ग्राफिक्स में आयामीकरण का उद्देश्य क्या है?

• To enhance the aesthetic appeal of engineering drawings

• To reduce the cost of materials used in production.

• To provide precise measurements and specifications for manufacturing and assembly.

• To create artistic representations of designs.

List the types of lines used in engineering drawings.

इनमें से कौन सी लाइन इंजीनियरिंग आलेख में उपयोग की जाती है

• 1. Solid lines 2. Dashed lines 3. Chain lines

• Dotted lines

• Curved lines

• Wavy lines

Explain the difference between first-angle and third-angle projection.

प्रथम-कोण और तृतीय-कोण प्रक्षेपण के बीच अंतर स्पष्ट करें।

• First-angle projection has views arranged differently than third-angle projection, with top view below front view in first-angle and above in third-angle.

• Third-angle projection is used exclusively in Europe, while first-angle is used in the US.

• First-angle projection uses a single view, while third-angle projection uses multiple views.

• First-angle projection places the top view above the front view, similar to third-angle.

What is the standard unit of measurement used in dimensioning?

आयाम निर्धारण में प्रयुक्त माप की मानक इकाई क्या है?

• Feet (ft)

• Yards (yd)

• Centimeters (cm)

• Millimeters (mm) or Inches (in) depending on the context.

Describe the significance of hidden lines in orthographic projections.

ऑर्थोग्राफ़िक अनुमानों में छिपी हुई रेखाओं के महत्व का वर्णन करें।

• Hidden lines are used to represent dimensions in orthographic projections.

• Hidden lines are only necessary in isometric drawings.

• Hidden lines indicate the color of the object in projections.

• Hidden lines are significant in orthographic projections as they indicate features not visible from the current view, ensuring a complete understanding of the object's geometry.

Identify the common line types used in engineering graphics.

इनमें से कौन सी लाइन इंजीनियरिंग ग्राफिक्स ज्यादा प्रयुक्त होती है

• dotted lines

• wavy lines

• colored lines

• Solid lines, dashed lines, chain lines

What is the role of center lines in technical drawings?

तकनीकी रेखाचित्रों में केंद्र रेखाओं की क्या भूमिका है?

• Center lines are primarily for decorative purposes in drawings.

• Center lines indicate the center of circles and symmetrical objects, aiding in measurements and alignment.

• Center lines are used to indicate the thickness of materials.

• Center lines help in coloring and shading technical drawings.

In first-angle projection, the object is placed in which quadrant?

फर्स्ट-एंगल प्रोजेक्शन में वस्तु को किस चतुर्थांश में रखा जाता है?

• First quadrant/पहले चतुर्थांश

• Secend quadrant/2nd चतुर्थांश

• 4th चतुर्थांश/4th quadrent

• 3rd quadrent/3rd quadrent

Farmula for length of scale in engineering graphics?

इंजीनियरिंग ग्राफिक्स में स्केल की लम्बाई का सूत्र?

• R.F factor ×Actual length

• R.F × Drawing length

• R.F × digonal length

• None of these/इनमें से कोई नहीं