इन्जिनियरिङ सेवा सिभिल इन्जिनियर (सातौँ तह) – प्राविधिक पत्र
इन्जिनियरिङ सेवा – सिभिल इन्जिनियर (सातौँ तह)
Civil Engineer – 7th 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
-
The compaction factor of fresh concrete is defined as the ratio of:
सही उत्तर: ग) Weight of partially compacted concrete to weight of fully compacted concrete
Compaction factor = weight of partially compacted concrete ÷ weight of fully compacted concrete in the same cylinder, a value less than 1.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
In the slump test, if one half of the concrete cone slides down along an inclined plane, the slump is called:
सही उत्तर: घ) Shear slump
A shear slump shows lack of cohesion; a true slump subsides evenly, and a collapse slump indicates a very wet mix.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
A nominal concrete mix of 1 : 4 : 8 corresponds to which grade?
सही उत्तर: ख) M7.5
IS 456 gives 1:4:8 for M7.5, used as lean concrete such as below foundations.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
As per IS 456, the nominal mix proportion (cement : fine aggregate : coarse aggregate) for M15 grade concrete is:
सही उत्तर: ख) 1 : 2 : 4
IS 456 nominal mixes: M10 = 1:3:6, M15 = 1:2:4, M20 = 1:1.5:3.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
During hydration of cement, calcium hydroxide is released. Its presence is important because it:
सही उत्तर: घ) Keeps the concrete alkaline, which protects embedded steel from corrosion
Calcium hydroxide gives a high pH that keeps a passive protective film on reinforcing steel.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
A simple field test for good quality cement is that when a hand is thrust into a bag of cement:
सही उत्तर: ख) It should feel cool
Good cement feels cool inside the bag; warmth or lumps indicate partial hydration due to moisture.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Supersulphated cement is made mainly from granulated blast furnace slag and calcium sulphate, and is particularly suitable for:
सही उत्तर: ग) Structures exposed to sulphate-bearing soils or sea water
Supersulphated cement has high resistance to sulphates and sea water.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Oil well cement is specially designed to:
सही उत्तर: घ) Remain workable (retarded setting) at high temperatures and pressures in deep wells
Oil well cement contains retarders so that it remains pumpable under the high temperature and pressure found in deep oil wells.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Quick setting cement is most suitable for:
सही उत्तर: घ) Concreting under water, especially in running water
Quick setting cement sets within a few minutes, so it is useful where concrete must set before water washes it away.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
In the grades of OPC designated 33, 43 and 53, the number denotes the:
सही उत्तर: घ) Minimum 28-day compressive strength of standard mortar cubes in N/mm²
For example, 53 grade OPC must reach at least 53 N/mm² compressive strength at 28 days.
💬 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।
AI ले गल्ती गर्न सक्छ। महत्वपूर्ण कुरा आधिकारिक स्रोतमा जाँच्नुहोस्।