D59 CHECK YOUR LEVEL

Which aggregate test measures resistance to crushing under a roller?

• Aggregate crushing test
• Impact test
• Soundness test
• Shape test

Answer explanation

Aggregate crushing test measures resistance under compressive force.

Which device in plane table surveying is used for inclined sighting?

• Plain alidade
• Trough compass
• Spirit level
• U frame with bob

Answer explanation

U frame with bob is used for long inclined sight and vertical angle reading.

What is the function of a plumb bob in plane table surveying?

• Centering
• Orientation
• Levelling
• Plumbing

Answer explanation

Plumb bob helps center the table over the station point.

Which bearing system in a prismatic compass measures from 0° to 360°?

• Whole circle bearing
• Reduced bearing
• Quadrantal bearing
• Azimuth bearing

Answer explanation

Whole circle bearing system measures from 0°–360° clockwise from north.

In RCC footing design, what type of shear involves a truncated cone failure?

• Two-way shear
• One-way shear
• Flexural tension
• Development length

Answer explanation

Two-way shear or punching shear appears around the column in footings.

Which polygon has all sides equal and all internal angles equal?

• Regular polygon
• Irregular polygon
• Concave polygon
• Convex polygon

Answer explanation

A regular polygon has equal sides and equal angles.

The alidade used for low elevation difference is called?

• Plain alidade
• Trough compass
• Telescopic alidade
• U-frame

Answer explanation

Plain alidade is used for ordinary low elevation differences.

Which highway material test uses a 50mm plunger to measure penetration?

• CBR Test
• Plate Load Test
• Impact value
• Dorry abrasion test

Answer explanation

CBR test uses 50 mm plunger for flexible pavement soil strength.

What is the unit of angularity number?

• Radian

• Dimensionless
• Degree
• Seconds

Answer explanation

Angularity number is dimensionless but expressed in percentage.

What is the line joining mid-point of a side to the opposite vertex in a triangle?

• Median
• Altitude
• Base
• Angle

Answer explanation

Median joins vertex to mid-point of opposite side in triangle.