आधारभूत विद्युत् (Basic Electrical) – Basic Electrical Engineering MCQ
आधारभूत विद्युत् (Basic Electrical) – इलेक्ट्रिकल र टेलिकम
Basic Electrical Engineering · Technical – Electrical, Mechanical & Telecom · २,२९९ प्रश्न
२,२९९ प्रश्न उपलब्ध। मोड छान्नुहोस्:
आधारभूत विद्युत् (Basic Electrical): 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 SI unit of inductance is the:
सही उत्तर: ख) henry
Inductance is measured in henrys (H).
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
In a magnetic circuit, the quantity analogous to resistance in an electric circuit is:
सही उत्तर: घ) reluctance
Reluctance opposes flux just as resistance opposes current; MMF is analogous to emf and flux to current.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
A coil of 500 turns has its flux changed uniformly from 0 to 2 mWb in 0.1 s. The average induced emf is:
सही उत्तर: घ) 10 V
e = N dPhi/dt = 500 x (2 x 10^-3 / 0.1) = 500 x 0.02 = 10 V.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Under steady-state DC conditions, an ideal inductor behaves as a/an:
सही उत्तर: ख) short circuit
With constant current, di/dt = 0, so the voltage across an ideal inductor is zero, like a short circuit.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
A conductor 0.5 m long carries 4 A at right angles to a uniform magnetic field of 0.2 T. The force on it is:
सही उत्तर: क) 0.4 N
F = B I L = 0.2 x 4 x 0.5 = 0.4 N.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
Fleming's right-hand rule is used to find the direction of the induced current in a:
सही उत्तर: क) generator
The right-hand rule applies to generator action, where motion in a field induces an emf.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
The direction of the force on a current-carrying conductor in a magnetic field (motor action) is found using:
सही उत्तर: क) Fleming's left-hand rule
Fleming's left-hand rule applies to motors: First finger = field, seCond finger = current, thuMb = motion.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
The law stating that an induced emf always acts to oppose the change that produces it is:
सही उत्तर: क) Lenz's law
Lenz's law gives the direction of induced emf, shown by the minus sign in e = -N dPhi/dt.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
According to Faraday's law of electromagnetic induction, the induced emf in a coil is proportional to:
सही उत्तर: क) the rate of change of flux linkage
e = N dPhi/dt; an emf is induced only when the flux linkage changes.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
-
One tesla, the unit of magnetic flux density, is equal to:
सही उत्तर: ग) 1 Wb/m^2
Flux density B = flux / area, so 1 T = 1 Wb/m^2.
💬 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।