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
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A battery charger operated from the mains must contain a:
सही उत्तर: क) rectifier to convert AC into DC
Batteries can only be charged by DC, so the charger rectifies the AC supply.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A galvanometer is an instrument for:
सही उत्तर: क) detecting small currents
A galvanometer is a sensitive moving-coil device that detects and measures very small currents.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A current-carrying solenoid behaves like:
सही उत्तर: ख) a bar magnet
Its field outside resembles that of a bar magnet, with N and S poles at its ends.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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An electric bell operates on the principle of:
सही उत्तर: ग) the magnetic effect of electric current (electromagnet)
The electromagnet attracts the armature to strike the gong and breaks its own circuit, giving repeated strokes.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Insulators for overhead lines are most commonly made of:
सही उत्तर: घ) porcelain or toughened glass
Porcelain and glass have high mechanical strength, dielectric strength and weather resistance.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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Mica is widely used as insulation in electric irons and between commutator segments because it:
सही उत्तर: घ) withstands high temperature and has high dielectric strength
Mica keeps its insulating properties at high temperature and resists electrical breakdown.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The MCBs that protect the different circuits of a house are housed in the:
सही उत्तर: क) distribution board
The distribution board receives the supply from the main switch and distributes it to circuits through MCBs or fuses.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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A ceiling rose is used to:
सही उत्तर: ख) connect a pendant lamp or ceiling fan to the fixed wiring
The ceiling rose provides terminals where the flexible cord of a fitting joins the fixed installation.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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In the loop-in system of house wiring:
सही उत्तर: ग) connections are taken by looping the conductors at the terminals of switches and lamp holders, avoiding joints
Loop-in wiring brings the conductors into and out of each outlet's terminals, so no hidden joints are needed.
💬 टिप्पणी / गल्ती रिपोर्ट (०)
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The maximum continuous conductor operating temperature for general-purpose PVC-insulated cables is about:
सही उत्तर: ग) 70 °C
General-purpose PVC insulation is rated for a conductor temperature of about 70 °C; higher temperatures soften and degrade it.
💬 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।
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