50 हर्ट्ज के तीसरे हार्मोनिक की आवृत्ति है

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IPRC (ISRO) Technician B (Electronics) 2016 Official Paper (Held on 28 Aug 2016)
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  1. 75Hz
  2. 100 Hz
  3. 150 Hz
  4. 250 Hz

Answer (Detailed Solution Below)

Option 3 : 150 Hz
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Detailed Solution

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हार्मोनिक:

हार्मोनिक एक विकृत तरंग स्वरुप को निर्माण करके मौलिक तरंगरूप पर आरोपित अवांछनीय उच्चतम आवृत्तियाँ हैं। 

हार्मोनिक के प्रभाव:

  • दक्षता कम हो जाती है। 
  • मशीनों में अतिरिक्त नुकसान होता है। 
  • शोर बढ़ता है। 
  • उपकरण विफल हो जाता है। 

 

सूत्र:

यदि nवां हार्मोनिक तरंगरूप में होता है, तो

fn = n fo

fn = nवां हार्मोनिक आवृत्ति 

fo = आपूर्ति आवृत्ति या मौलिक आवृत्ति

T = समयावधि

गणना:

n = 3

f = 50 Hz

fn = n f0

f3 = 3 x 50 = 150 Hz

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