इन्जिनियरिङ सेवा असिस्टेन्ट सब-इन्जिनियर (चौथो तह) – प्राविधिक पत्र
इन्जिनियरिङ सेवा – असिस्टेन्ट सब-इन्जिनियर (चौथो तह)
Assistant Sub-Engineer – 4th 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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Brass is an alloy of:
सही उत्तर: ग) Copper and zinc
Brass is copper with zinc, while bronze is copper with tin.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Cathodic protection of buried steel pipelines prevents corrosion by:
सही उत्तर: क) Making the steel the cathode, using sacrificial anodes or an impressed current
Connecting a more active metal (e.g., zinc or magnesium) or applying an impressed current makes the steel cathodic so it does not corrode.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Normalising of steel consists of heating above the critical temperature and then:
सही उत्तर: घ) Cooling in still air
Normalising refines grain and relieves stresses by air cooling, which is faster than furnace cooling used in annealing.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Tempering of steel, done after hardening, consists of:
सही उत्तर: ग) Reheating to a moderate temperature and cooling, to reduce brittleness
Hardened steel is very brittle; tempering at a lower temperature relieves stresses and restores some toughness.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In the designation ISMB 300 for a rolled steel section, 'ISMB' stands for:
सही उत्तर: क) Indian Standard Medium weight Beam
ISMB is an I-section medium weight beam; the number gives its depth in millimetres.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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As per IS 1786, the minimum percentage elongation required for Fe 415 bars is:
सही उत्तर: ख) 14.5%
IS 1786 specifies minimum elongation of 14.5% for Fe 415 and 12% for Fe 500.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Ribbed (deformed) reinforcement bars are preferred over plain round bars mainly because they give:
सही उत्तर: ख) Better bond with concrete
The ribs mechanically interlock with concrete, greatly increasing bond strength and reducing the anchorage length needed.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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High carbon steel is most suitable for:
सही उत्तर: घ) Cutting tools, springs and drills
High carbon steel (about 0.6–1.5% C) can be hardened to a high degree, which suits tools and springs.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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As the carbon content of plain steel increases, its:
सही उत्तर: क) Hardness and strength increase but ductility decreases
More carbon makes steel harder and stronger but less ductile and less weldable.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The LD (basic oxygen) process of steel making involves:
सही उत्तर: ख) Blowing pure oxygen onto molten pig iron in a converter
In the Linz-Donawitz process, high-purity oxygen is blown onto the molten charge, burning out carbon and impurities quickly.
💬 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।
नमस्ते! पाठ्यक्रम, सामान्य ज्ञान, भाषा परीक्षा वा कुनै प्रश्नको उत्तर बुझ्न सोध्नुहोस्।
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