D62 FACE THE CHALLENGE

Which IS code provides the guidelines for earthquake-resistant design of structures?

• IS 456
• IS 875
• IS 1893
• IS 875 Part 3

Answer explanation

IS 1893 deals with earthquake-resistant design of structures.

What is the difference between 'COPY' and 'MIRROR' in AutoCAD?

• COPY duplicates, MIRROR reflects
• COPY moves, MIRROR rotates
• COPY creates multiple, MIRROR only one
• COPY needs base point, MIRROR needs axis

Answer explanation

COPY duplicates objects; MIRROR reflects across a defined axis.

Which type of sleepers has the highest initial cost but the longest life?

• Steel sleepers
• Wooden sleepers
• Cast iron sleepers
• Concrete sleepers

Answer explanation

Concrete sleepers are costly but have longest life and strength.

In a turnout, the crossing is subject to maximum wear at:

• Toe of switch
• Nose of crossing
• Throat of rail
• Thick end of rail

Answer explanation

Nose of crossing suffers highest impact and wear in turnout.

Which method is used for measuring discharge by float movement in open channel flow?

• Weir method
• Float method
• Current meter
• Pitot tube

Answer explanation

Float method uses surface velocity to estimate discharge.

Why is elongation limited in steel reinforcement as per IS codes?

• Prevent corrosion
• Ensure safety in fire
• Allow deformation under stress
• Avoid large elongation during quake

Answer explanation

Elongation limit ensures ductility without collapse during events like earthquakes.

The camber in roads is primarily provided to:

• Increase load capacity
• Increase friction
• Prevent water logging
• Resist subgrade

Answer explanation

Camber helps drain water from road surface.

In a two-way slab, if Ly/Lx < 2, then:

• Slab bends only in short span
• Slab bends in both directions
• Slab behaves as one-way
• Slab transfers to beams only

Answer explanation

If Ly/Lx < 2, slab bends in both directions (two-way action).

Which command in AutoCAD creates a tapered rectangle or line?

• SPLINE
• FILLET
• CHAMFER
• TAPER

Answer explanation

TAPER creates gradually narrowing objects.

Which property of water affects its tendency to rise in capillaries?

• Density
• Viscosity
• Cohesion
• Surface tension

Answer explanation

Surface tension affects water's rise in capillaries.