For a standard 45° fillet weld, what is the ratio comparing leg size to throat thickness_______________?
Show answer Hide answer
Answer: C. V2 : 1
Explanation
For a standard 45° fillet weld, the ratio of leg size to throat thickness is equal to the square root of 2 to 1. Trigonometric relationships in a 45° right triangle dictate that the throat equals the leg multiplied by sine of 45°. This ratio is fundamental for calculating the effective throat area used in fillet weld strength design. Fillet welds have a triangular cross-section where leg sizes define the perpendicular sides on the plates. The throat thickness represents the shortest distance from the root to the face of the weld bead. Weld strength calculations depend entirely on multiplying the effective throat thickness by the weld length.
Option A proposes a 1:1 ratio, which incorrectly ignores standard triangular geometry proportions. Option B inverts the ratio incorrectly, placing the square root value on the wrong side. Option D suggests a 2:1 ratio, which does not align with standard 45° right-triangle geometry.
- Subject
- Engineering
- Category
- Civil Engineering
- Topic
- —
- Difficulty
- medium
Related questions
Q1. Per IS:800, what numerical value is assigned to the imperfection index (n) in the Merchant-Rankine formula_______________?
Show answer Hide answer
Answer: B. 1.4
IS 800 assigns an imperfection index value of 1.4 for use in the Merchant-Rankine column formula. This empirical index accounts for initial geometric crookedness and residual stresses present in structural steel members....
Q2. Bridge rocker bearing pins are engineered to withstand_________________?
Show answer Hide answer
Answer: D. bearing, shear and bending
Bridge rocker bearing pins must safely transmit heavy vertical loads and rotations. This dual functional requirement demands simultaneous resistance against bearing, shear, and bending. Engineers design these pins to wit...
Q3. Gantry crane girders are engineered to withstand_________________?
Show answer Hide answer
Answer: C. lateral, longitudinal and vertical loads
Gantry crane girders are subjected to complex multi-directional forces during lifting and moving operations. They must withstand lateral forces from trolley movement, longitudinal forces from braking, and vertical gravit...
Q4. Based on Unwin’s formula, the appropriate rivet dimension for connecting a 16 mm thick plate will be__________________?
Show answer Hide answer
Answer: C. 24 mm
Unwin's formula relates plate thickness to rivet diameter, yielding a 24 mm rivet diameter for a 16 mm thick plate. This empirical rule helps proportion fasteners appropriately relative to the thickness of connected stee...
Q5. A bridge featuring a floor supported at or near the bottom while its top chords remain unbraced is designated as________________?
Show answer Hide answer
Answer: C. half through type
A half through bridge features a floor supported near the bottom chords of the truss. The top chords remain unbraced transversely across the upper portion of the structural frame. This geometric configuration provides ad...
Q6. Purlins are typically positioned at panel points primarily to prevent__________________?
Show answer Hide answer
Answer: D. bending moment in rafter
Purlins are placed at roof truss panel points to eliminate intermediate bending moments in the top chord rafters. Locating purlins directly at nodes ensures rafters experience pure axial forces rather than combined bendi...