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 of mass 1000 kg has an engine of maximum power 30 kW. If the total resistance to motion is a constant 1000 N, its maximum speed on a level road is:
सही उत्तर: ग) 30 m/s
At maximum speed the driving force equals the resistance, so v = P/F = 30000/1000 = 30 m/s.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A uniform rope lying on a smooth horizontal floor is pulled at one end by a horizontal force F. The tension at the midpoint of the rope is:
सही उत्तर: क) F/2
The whole rope accelerates at F/M; the rear half (mass M/2) is pulled only by the tension at the midpoint, so T = (M/2)(F/M) = F/2.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A curve of radius 50 m is banked at 45°, and the coefficient of friction between tyres and road is 0.5. The maximum safe speed is about (g = 10 m/s²):
सही उत्तर: घ) 38.7 m/s
v²max = rg(μ + tan θ)/(1 − μ tan θ) = 50 × 10 × 1.5/0.5 = 1500, so vmax ≈ 38.7 m/s.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A block rests on top of another block on a smooth floor; the coefficient of static friction between the blocks is μ. The lower block is pulled horizontally. The upper block does not slip as long as the acceleration does not exceed:
सही उत्तर: क) μg
Only friction accelerates the upper block, and the maximum friction is μmg, so the largest common acceleration is μmg/m = μg.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A 20 kg monkey climbs a rope that can withstand a maximum tension of 300 N. The greatest upward acceleration with which it can climb is (g = 10 m/s²):
सही उत्तर: ख) 5 m/s²
T − mg = ma gives a = (300 − 200)/20 = 5 m/s².
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A car moving on a circular track has a tangential acceleration of 3 m/s² and a centripetal acceleration of 4 m/s². The magnitude of its total acceleration is:
सही उत्तर: ग) 5 m/s²
The two components are perpendicular, so a = √(3² + 4²) = 5 m/s².
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The angular speed of the Earth's rotation about its axis is about:
सही उत्तर: ख) 7.3 × 10⁻⁵ rad/s
ω = 2π/T = 2π/(86400 s) ≈ 7.3 × 10⁻⁵ rad/s.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A projectile is fired at 20 m/s at 60° above the horizontal. Its velocity becomes perpendicular to the initial velocity after (g = 10 m/s²):
सही उत्तर: ख) about 2.31 s
Setting (u cos θ, u sin θ − gt)·(cos θ, sin θ) = 0 gives u − gt sin θ = 0, so t = u/(g sin 60°) = 20/8.66 ≈ 2.31 s (before landing at 3.46 s).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The trajectory of a projectile is y = √3 x − 0.2x² (SI units, g = 10 m/s²). Its speed of projection is:
सही उत्तर: घ) 10 m/s
Comparing with y = x tan θ − g x²/(2u² cos²θ): tan θ = √3 gives θ = 60°, and 10/(2u² × 1/4) = 0.2 gives u² = 100, u = 10 m/s.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A body moving with uniform acceleration covers 10 m in the 2nd second and 20 m in the 4th second of its motion. The distance it covers in the 6th second is:
सही उत्तर: ख) 30 m
Sₙ = u + a(n − ½): u + 1.5a = 10 and u + 3.5a = 20 give a = 5 m/s², u = 2.5 m/s, so S₆ = 2.5 + 5 × 5.5 = 30 m.
💬 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।