किसी परिपथ में तात्कालिक धारा i = 4 cos (ωt + θ) A द्वारा दी जाती है। धारा का RMS मान है:

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SSC JE Electrical 10 Oct 2023 Shift 2 Official Paper-I
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  1. 3√3 A
  2. शून्य
  3. 4√2 A
  4. 2√2 A

Answer (Detailed Solution Below)

Option 4 : 2√2 A
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संकल्पना:

  • प्रत्यावर्ती धारा एक विद्युत धारा है जो समय-समय पर दिशा परिवर्तित करती रहती है
  • सामान्य समीकरण द्वारा दिया गया है
    • I = isin (ωt)
    • I = icos (ωt)
  • RMS का अर्थ तात्कालिक धारा का मूल-मध्य-वर्ग है
  • I0 = शिखर धारा, ω = आवृत्ति

गणना:

दिया गया है, प्रत्यावर्ती धारा का समीकरण

i = 4 cos (ωt + θ) A

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