आईओई इन्जिनियरिङ प्रवेश (त्रिवि) BE / B.Arch प्रवेश परीक्षा तयारी
आईओई इन्जिनियरिङ प्रवेश (त्रिवि) – BE / B.Arch प्रवेश परीक्षा
IOE BE / B.Arch Entrance · IOE Entrance (TU)
३,८४१ प्रश्न उपलब्ध। मोड छान्नुहोस्:
BE/B.Arch प्रवेश: 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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A car on a banked road moves faster than the optimum speed for that banking. The friction force on its tyres acts:
सही उत्तर: ख) down the incline
Above the optimum speed the car tends to slide outward (up the slope), so friction acts down the incline to supply extra centripetal force.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In an oblique (glancing) elastic collision between two equal masses, one initially at rest, the two velocities after the collision are:
सही उत्तर: ग) at right angles to each other
With equal masses, momentum gives u = v₁ + v₂ and energy gives u² = v₁² + v₂², so v₁·v₂ = 0: the paths are perpendicular.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A car starts from rest and its engine delivers constant power P (no losses). Its speed v varies with time t as:
सही उत्तर: घ) v ∝ √t
Pt = ½mv², so v = √(2Pt/m) ∝ √t.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Which of the following forces is non-conservative?
सही उत्तर: घ) kinetic friction
The work done by friction depends on the path and is not recovered on a closed path, so friction is non-conservative.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A 50 kg man walks 4 m along a 200 kg boat floating at rest on still water (no friction). The boat moves through:
सही उत्तर: क) 0.8 m
The centre of mass stays fixed: 50(4 − x) = 200x gives x = 0.8 m, opposite to the man's motion.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A 2 kg block rests on a rough incline of 30° whose coefficient of static friction is 0.8. The friction force acting on it is (g = 10 m/s²):
सही उत्तर: ख) 10 N
The block is at rest, so static friction just balances mg sin 30° = 2 × 10 × 0.5 = 10 N (less than the limit μN ≈ 13.9 N).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In a frame of reference moving with acceleration a, a body of mass m appears to experience a pseudo force of:
सही उत्तर: ग) ma, opposite to the frame's acceleration
To apply Newton's laws in a non-inertial frame, a pseudo force −ma is added, directed opposite to the frame's acceleration.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A body moving with uniform acceleration has speeds u and v at two points. Its speed at the midpoint of the distance between them is:
सही उत्तर: ग) √((u² + v²)/2)
Using v² − u² = 2as for each half: w² − u² = v² − w², so w = √((u² + v²)/2).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The minimum speed with which a stone must be thrown vertically upward to reach a height of 45 m is (g = 10 m/s²):
सही उत्तर: घ) 30 m/s
v² = 2gh = 2 × 10 × 45 = 900, so v = 30 m/s.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A particle moves in a circle of radius 1 m with a constant speed of π m/s. Its average velocity over a quarter revolution is about:
सही उत्तर: क) 2.83 m/s
Period T = 2π(1)/π = 2 s, so a quarter turn takes 0.5 s; displacement = √2 m, average velocity = √2/0.5 ≈ 2.83 m/s.
💬 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।