आईओई इन्जिनियरिङ प्रवेश (त्रिवि) M.Sc. इन्जिनियरिङ प्रवेश तयारी
आईओई इन्जिनियरिङ प्रवेश (त्रिवि) – M.Sc. इन्जिनियरिङ प्रवेश
IOE M.Sc. Engineering 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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In a natural (irreversible) process, the total entropy of the universe:
सही उत्तर: ग) increases
By the second law, the entropy of an isolated system (the universe) increases in every irreversible process.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Heat is supplied to a monatomic ideal gas at constant pressure. The fraction of this heat that goes into increasing its internal energy is:
सही उत्तर: क) 3/5
ΔU/Q = nCvΔT/(nCpΔT) = Cv/Cp = (3/2 R)/(5/2 R) = 3/5.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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At any point, the slope of an adiabatic curve on a P–V diagram is related to the slope of the isothermal curve through the same point by:
सही उत्तर: ग) adiabatic slope = γ × isothermal slope
Isothermal: dP/dV = −P/V; adiabatic: dP/dV = −γP/V; so the adiabatic is γ times steeper.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The zeroth law of thermodynamics leads to the concept of:
सही उत्तर: घ) temperature
If two bodies are each in thermal equilibrium with a third, they are in equilibrium with each other; the common property is temperature.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A bimetallic strip used in a thermostat works because the two metals have different:
सही उत्तर: घ) coefficients of linear expansion
On heating the metals expand by different amounts, so the strip bends and makes or breaks the circuit.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A metal plate with a circular hole in it is heated uniformly. The diameter of the hole:
सही उत्तर: क) increases
On uniform heating every linear dimension of the plate, including the hole, expands as if the hole were made of the same metal.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Taking Wien's constant as 2.9 × 10⁻³ m K, a star whose spectrum peaks at 290 nm has a surface temperature of about:
सही उत्तर: क) 10 000 K
T = b/λmax = 2.9 × 10⁻³/(290 × 10⁻⁹) = 1 × 10⁴ K.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Two rods of the same length and cross-section, with thermal conductivities K₁ and K₂, are joined end to end. The equivalent thermal conductivity of the combination is:
सही उत्तर: घ) 2K₁K₂/(K₁ + K₂)
Thermal resistances add in series: 2L/(KA) = L/(K₁A) + L/(K₂A), giving K = 2K₁K₂/(K₁ + K₂).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Water is used as a coolant in car radiators mainly because it has a:
सही उत्तर: क) high specific heat capacity
A high specific heat lets water absorb a large amount of heat for a small rise in temperature.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A temperature difference of 10 °C is equal to a temperature difference of:
सही उत्तर: घ) 18 °F
A Celsius degree equals 9/5 Fahrenheit degrees, so 10 C° = 18 F° (the offset of 32 does not apply to differences).
💬 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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