नेपाल व्यावसायिक लाइसेन्स परीक्षा
नेपाल व्यावसायिक लाइसेन्स परीक्षा
Nepal Professional License Exams · २,४१४ प्रश्न
२,४१४ प्रश्न उपलब्ध। मोड छान्नुहोस्:
लाइसेन्स परीक्षा: प्रश्न र उत्तर
सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ३ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।
सही: ० / ०
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In limit state design to IS 456, the design yield strength of reinforcement used in flexure is taken as:
सही उत्तर: ग) 0.87 fy
Design strength = fy / 1.15 ≈ 0.87 fy.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In limit state design of RCC to IS 456, the partial safety factor for concrete strength at the limit state of collapse is:
सही उत्तर: ख) 1.5
γm = 1.5 for concrete and 1.15 for reinforcing steel at the limit state of collapse.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The characteristic strength of concrete is the strength below which not more than what percentage of test results are expected to fall?
सही उत्तर: क) 5%
IS 456 defines characteristic strength (fck) as the value below which not more than 5% of test results are expected to fall.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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According to IS 456:2000, what is the minimum grade of concrete for reinforced concrete work under 'mild' exposure condition?
सही उत्तर: घ) M20
IS 456:2000 (Table 5) specifies M20 as the minimum grade for RCC in mild exposure; M15 is allowed only for plain concrete.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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For a simply supported beam carrying a uniformly distributed load over the full span, the shapes of the shear force and bending moment diagrams are respectively:
सही उत्तर: ग) Linear and parabolic
Under a UDL the shear force varies linearly (first integral of load) and the bending moment varies parabolically (second integral).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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To avoid tension anywhere in a rectangular section of width b under eccentric compressive load, the eccentricity about the axis must not exceed:
सही उत्तर: घ) b/6
The middle-third rule: with e ≤ b/6 the direct stress P/A is never exceeded by bending stress 6Pe/(b²·d), so no tension develops.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Factor of safety is commonly defined as the ratio of:
सही उत्तर: ख) Ultimate stress to working (permissible) stress
FOS = ultimate (or failure) stress / working stress, and it is always greater than 1.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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At a point in a stressed body, the principal stresses are 80 MPa (tensile) and 20 MPa (tensile). The maximum in-plane shear stress is:
सही उत्तर: क) 30 MPa
τmax = (σ1 − σ2)/2 = (80 − 20)/2 = 30 MPa, the radius of Mohr's circle.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In a thin cylindrical pressure vessel, the ratio of hoop (circumferential) stress to longitudinal stress is:
सही उत्तर: घ) 2
Hoop stress = pd/2t and longitudinal stress = pd/4t, so the ratio is 2.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The strain energy stored in a prismatic bar of length L, area A and modulus E under an axial load P applied gradually is:
सही उत्तर: ख) P²L/(2AE)
U = (1/2) P δ and δ = PL/AE, giving U = P²L/2AE.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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