एक 3-फ़ेज़ संतुलित भार में, तटस्थ धारा हमेशा ___________ होती है।

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RRB ALP Instrument Mechanic 23 Jan 2019 Official Paper (Shift 1)
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  1. 12 A
  2. 10 A
  3. 15 A
  4. 0 A

Answer (Detailed Solution Below)

Option 4 : 0 A
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सही विकल्प 4 है।  

संकल्पना:

संतुलित भार की विशेषताएँ निम्नलिखित हैं।

  • सभी तीन फेज में परिमाण और फ़ेज़ कोण में समान प्रतिबाधा है।
  • सभी फेज में समान शक्ति कारक होता है।
  • तटस्थ In के माध्यम से धारा शून्य है।

F1 Uday Madhu 26.10.20 D 6 

अनुप्रयोग:

Ia = 20∠0°, Ib = 20∠(-120°), Ic = 20∠(120°)

In = Ia + Ib + Ic

\({I_n} = 20∠ 0^\circ + 20∠( - 120^\circ) + 20∠ 120^\circ\)

= 0 A

तटस्थ तार में धारा 0 A होगी।

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