कृषि, पशु र वन विज्ञान B.Sc. Forestry प्रवेश तयारी
कृषि, पशु र वन विज्ञान – B.Sc. Forestry प्रवेश
B.Sc. Forestry Entrance · Agriculture, Veterinary & Forestry Entrance
२,४९३ प्रश्न उपलब्ध। मोड छान्नुहोस्:
कृषि, पशु र वन विज्ञान 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
-
The Earth's geographic north pole lies near its:
सही उत्तर: क) magnetic south pole
The north-seeking pole of a compass is attracted towards the geographic north, so a magnetic south pole must lie there.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
An electric generator (dynamo) works on the principle of:
सही उत्तर: ख) electromagnetic induction
Rotating a coil in a magnetic field changes the flux through it and induces an emf.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Fleming's left-hand rule gives the direction of the:
सही उत्तर: ख) force on a current-carrying conductor in a magnetic field
The left-hand rule is used for motors; the right-hand rule gives the direction of induced current in generators.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
A 60 W bulb is used for 5 hours a day for 30 days. The electrical energy consumed is:
सही उत्तर: ग) 9 kWh
E = 0.06 kW × 5 h × 30 = 9 kWh (9 units).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Two bulbs rated 40 W, 220 V and 60 W, 220 V are connected in parallel across a 220 V supply. Which glows brighter?
सही उत्तर: क) The 60 W bulb
In parallel each bulb gets its rated 220 V and dissipates its rated power, so the 60 W bulb is brighter.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Resistors of 2 Ω and 4 Ω are connected in parallel to a battery. The ratio of heat produced per second in the 2 Ω and 4 Ω resistors is:
सही उत्तर: ग) 2 : 1
In parallel V is the same, so H = V²t/R ∝ 1/R; H₂ : H₄ = 4 : 2 = 2 : 1.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Resistors of 4 Ω and 12 Ω are connected in parallel across a 6 V battery of negligible internal resistance. The total current drawn is:
सही उत्तर: ग) 2 A
Currents are 6/4 = 1.5 A and 6/12 = 0.5 A; total = 2 A (equivalently 6 V ÷ 3 Ω).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
A heater coil is cut into two equal halves and only one half is used on the same supply voltage. Its power becomes:
सही उत्तर: ख) double
Halving the length halves the resistance; P = V²/R, so the power doubles.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Three resistors of 6 Ω each are connected so that two are in parallel and this pair is in series with the third. The equivalent resistance is:
सही उत्तर: ख) 9 Ω
Two 6 Ω in parallel give 3 Ω; adding the third in series gives 3 + 6 = 9 Ω.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
An electric iron rated 1000 W works on a 250 V supply. The current it draws is:
सही उत्तर: क) 4 A
I = P/V = 1000/250 = 4 A.
💬 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।