D29 FACE THE CHALLANGE

What is the standard size of an A1 drawing sheet as per IS code?

• 841 mm x 594 mm
• 594 mm x 420 mm
• 420 mm x 297 mm
• 297 mm x 210 mm

Answer explanation

A1 size as per ISO and IS 10711 is 841 mm x 594 mm, used for large technical drawings.

Which instrument is used for drawing parallel lines in engineering drawing?

• Protractor
• Scale
• T-square
• Compass

Answer explanation

T-squares are essential for drawing parallel and horizontal lines on drawing sheets.

The thickness of lines used for visible outlines in technical drawings is:

• Thin
• Medium
• Thick
• Dotted

Answer explanation

Visible outlines use thick lines (0.7 mm or more) to distinguish from other lines.

Which of the following is a natural building material?

• Cement
• Brick
• Stone
• Glass

Answer explanation

Stone is a naturally occurring construction material, while others are manufactured.

Which bond is commonly used for brick walls subjected to heavy loads?

• Flemish bond
• English bond
• Header bond
• Stretcher bond

Answer explanation

English bond alternates headers and stretchers, offering maximum strength for heavy loads.

What is the initial setting time of ordinary Portland cement?

• 10 minutes
• 30 minutes
• 45 minutes
• 60 minutes

Answer explanation

IS 4031 specifies that OPC must have an initial setting time of at least 30 minutes.

The process of joining bricks with mortar is called:

• Plastering
• Pointing
• Grouting
• Bonding

Answer explanation

Bonding refers to assembling bricks with mortar to form walls or other structures.

Which type of foundation is suitable for black cotton soil?

• Strip foundation
• Raft foundation
• Under-reamed pile
• Pad foundation

Answer explanation

Under-reamed piles are designed to resist heaving and settlement in expansive soils.

Which is the most commonly used cement for general construction in India?

• White cement
• Rapid hardening cement
• Ordinary Portland cement
• Low heat cement

Answer explanation

Ordinary Portland Cement (OPC) is widely used due to its strength and availability.

Which instrument is used to measure angles in engineering drawing?

• Divider
• Compass
• Protractor
• French curve

Answer explanation

Protractor is specifically designed for measuring and drawing angles.