TEAM QUIZ

Which of the following statements is NOT true regarding a drawing board?

• Made from well-seasoned softwood like pine, fir, or oak
• The standard size is specified under IS: 1444-1963/1977
• The board is made of a single wooden strip to avoid warping
• Battens are provided at the back to prevent warping

Answer explanation

A drawing board consists of 4 to 6 narrow strips joined by tongue and groove joints, not a single strip.

Which of the following surveys is used to determine different strata in the Earth’s crust?

• Engineering Survey
• Geological Survey
• Military Survey
• Mine Survey

Answer explanation

Geological Surveys are conducted to study Earth’s strata.

A hyperbola has how many asymptotes?

• 0
• 1
• 2
• 3

Answer explanation

A hyperbola has 2 asymptotes.

The directrix of a parabola is:

• A fixed point
• A fixed line
• A variable curve
• A tangent

Answer explanation

The directrix is a fixed reference line.

Consider the following statements regarding Levelling and identify the incorrect one. (i) The line of collimation is always parallel to the axis of the level tube.(ii) A temporary benchmark is established for short durations at the end of the day’s work.(iii) The axis of the bubble tube should be perpendicular to the vertical axis.(iv) The foresight reading is taken at a known elevation point.

• Only (i)
• Only (ii)
• Only (iii)
• Only (iv)

Answer explanation

Foresight (FS) is taken at an unknown elevation point, while Backsight (BS) is taken at a known elevation.

Regarding Compass Surveying, which of the following statements is incorrect? (i) In a prismatic compass, the 0° mark is at South, and angles are measured clockwise.(ii) The sum of the Fore Bearing (FB) and Back Bearing (BB) is always 180° in a closed traverse.(iii) The compass needle points towards true north in all conditions.(iv) Whole Circle Bearing (WCB) ranges from 0° to 360° and is measured clockwise.

• Only (i)
• Only (ii)
• Only (iii)
• Only (iv)

Answer explanation

The compass needle points toward Magnetic North, not True North, as it is influenced by local attraction.

In contouring, which of the following statements is incorrect? (i) Contour lines never cross each other except in the case of overhanging cliffs.(ii) The horizontal equivalent is always constant between two consecutive contour lines.(iii) Closely spaced contour lines indicate a steep slope.(iv) A ridge is identified when contour values increase towards the center.

• Only (i)
• Only (ii)
• Only (iii)
• Only (iv)

Answer explanation

The horizontal equivalent is not always constant; it varies based on terrain steepne

Which of the following is NOT a function of silica in brick earth?

• It prevents cracking and warping.
• It imparts plasticity to the brick earth.
• It imparts uniform shape to bricks.
• Excess silica makes bricks brittle.

Answer explanation

Alumina, not silica, provides plasticity to brick earth.

Which among the following defects in bricks is caused due to the presence of excess carbonaceous matter and sulfur?

• Black core
• Efflorescence
• Bloating
• Lamination

Answer explanation

Bloating occurs due to the expansion of carbonaceous matter and sulfur inside the bricks.

The percentage of lime (CaO) in Ordinary Portland Cement (OPC) is approximately:

• 40-50%
• 50-55%
• 60-67%
• 70-75%

Answer explanation

Lime (CaO) constitutes 60-67% of OPC, providing strength and binding properties.