सिभिल इन्जिनियरिङ
सिभिल इन्जिनियरिङ
Civil Engineering · ५,१७१ प्रश्न
५,१७१ प्रश्न उपलब्ध। मोड छान्नुहोस्:
सिभिल इन्जिनियरिङ: 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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The weight of a standard (traditional) burnt clay brick is generally about:
सही उत्तर: ख) 3 to 3.5 kg
An ordinary burnt brick weighs roughly 3 to 3.5 kg.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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An aggregate sample has an oven-dry mass of 2000 g, a saturated surface-dry mass of 2020 g and a mass in water of 1260 g. Its bulk specific gravity (oven-dry basis) is about:
सही उत्तर: क) 2.63
Bulk specific gravity = oven-dry mass/(SSD mass − mass in water) = 2000/(2020 − 1260) = 2000/760 = 2.63.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Recycled concrete aggregate is obtained by:
सही उत्तर: घ) Crushing concrete from demolished structures
Crushed demolition concrete can be reused as aggregate, reducing waste and use of natural resources.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following is an artificial (manufactured) aggregate?
सही उत्तर: ग) Air-cooled blast furnace slag
Blast furnace slag is an industrial by-product, whereas the others are natural aggregates.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The particle size distribution (grading) of an aggregate is determined by:
सही उत्तर: ख) Sieve analysis
Sieving through a standard set of sieves gives the percentage of material in each size range.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Manufactured sand (M-sand) is:
सही उत्तर: क) Fine aggregate produced by crushing hard stone
M-sand is crushed-rock fine aggregate, used as a substitute for river sand.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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As per IS 383, the crushing value of coarse aggregate used for concrete other than wearing surfaces should not exceed:
सही उत्तर: घ) 45%
Crushing value is limited to 45% for general concrete and 30% for wearing surfaces such as runways and roads.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In the aggregate crushing value test, the load applied to the aggregate in the cylinder is:
सही उत्तर: ग) 400 kN applied gradually over 10 minutes
The plunger loads the aggregate uniformly to 400 kN (about 40 tonnes) in 10 minutes.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In the aggregate impact value test, the sample in the cup is subjected to:
सही उत्तर: ख) 15 blows of a 13.5 to 14 kg hammer falling 380 mm
The impact test uses 15 blows of a hammer of 13.5–14 kg dropped from 380 mm.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A coarse aggregate has a loose bulk density of 1600 kg/m³ and a specific gravity of 2.65. The percentage of voids is about:
सही उत्तर: क) 40%
Voids = 1 − bulk density/(G × 1000) = 1 − 1600/2650 = 0.396, i.e. about 40%.
💬 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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