इन्जिनियरिङ सेवा सब-इन्जिनियर (पाँचौँ तह) – प्राविधिक पत्र
इन्जिनियरिङ सेवा – सब-इन्जिनियर (पाँचौँ तह)
Sub-Engineer – 5th Level · Engineering Service
१,५०३ प्रश्न उपलब्ध। मोड छान्नुहोस्:
प्राविधिक पत्र: प्रश्न र उत्तर
सही लागेको विकल्पमा थिच्नुहोस्। सही भए हरियो, गलत भए रातो देखिन्छ; ५ सेकेन्डपछि सही उत्तर र व्याख्या देखिन्छ।
सही: ० / ०
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A thin cylindrical shell of diameter 1000 mm and wall thickness 10 mm is subjected to an internal pressure of 2 N/mm². The hoop (circumferential) stress is:
सही उत्तर: घ) 100 N/mm²
σh = pd/(2t) = 2 × 1000 / (2 × 10) = 100 N/mm².
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In prestressed concrete, which loss of prestress occurs only in post-tensioned members and not in pre-tensioned members?
सही उत्तर: क) Loss due to friction
Friction between tendon and duct exists only in post-tensioning; creep, shrinkage and relaxation occur in both.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A doubly reinforced beam is generally adopted when:
सही उत्तर: क) The depth of the beam is restricted and the moment exceeds the limiting moment
Compression steel is added when a singly reinforced section of restricted depth cannot resist the moment.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In an isolated RCC column footing, the critical section for one-way shear is taken at:
सही उत्तर: क) A distance d (effective depth) from the face of the column
IS 456 checks one-way shear at d from the column face and punching shear at d/2.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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For a singly reinforced balanced RCC section with Fe 415 steel, Mu,lim = 0.138 fck b d². For M20, b = 230 mm and d = 450 mm, Mu,lim is about:
सही उत्तर: ख) 128.5 kNm
Mu,lim = 0.138 × 20 × 230 × 450² ≈ 128.5 × 10⁶ Nmm = 128.5 kNm.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In limit state design as per IS 456, the total compressive force in concrete for a rectangular section with neutral axis depth xu is:
सही उत्तर: ग) 0.36 fck b xu
The area of the IS 456 stress block gives a resultant compression of 0.36 fck b xu.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In the working stress method (IS 456), the modular ratio m is taken as 280/(3σcbc). For M20 concrete (σcbc = 7 N/mm²), m is about:
सही उत्तर: ख) 13.33
m = 280 / (3 × 7) = 13.33.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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As per IS 456:2000, the final deflection of a flexural member due to all loads including long-term effects should not normally exceed:
सही उत्तर: ग) Span/250
IS 456 limits the final deflection to span/250.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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As per IS 456:2000, the development length Ld of a bar of diameter φ is given by:
सही उत्तर: घ) φσs/(4τbd)
Equating bar force (πφ²/4)σs to bond force (πφ Ld)τbd gives Ld = φσs/(4τbd).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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As per IS 456:2000, the maximum spacing of vertical stirrups in a beam is:
सही उत्तर: क) 0.75d or 300 mm, whichever is less
IS 456 limits vertical stirrup spacing to 0.75d or 300 mm, whichever is smaller.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
यी अभ्यास प्रश्न हुन्, आधिकारिक प्रश्न होइनन्। पाठ्यक्रम, विज्ञापन र नतिजाका लागि सम्बन्धित निकायको आधिकारिक वेबसाइट हेर्नुहोस्। उत्तरमा गल्ती भेटे प्रश्नमुनिको "टिप्पणी / गल्ती रिपोर्ट" मा लेख्नुहोस्।
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