तीन एकसमान रोधक प्रथम तारांकित आणि नंतर डेल्टा रचनेमध्ये जोडलेले आहे. उर्जा वापराचे पहिल्या संयोगाचे दुस-या संयोगाशी गुणोत्तर किती असेल?

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  1. 1/√3
  2. 1
  3. 1/3
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Option 3 : 1/3
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संकल्पना:

जेव्हा रोधक डेल्टामध्ये जोडलेले असतात, तेव्हा परिपथ खाली दर्शविल्याप्रमाणे असतो.

F1 U.B Madhu 23.03.20 D8

वापरली गेलेली ऊर्जा, \({W_{\rm{\Delta }}} = \frac{{3V_L^2}}{R}\)

जेव्हा रोधक तारेमध्ये जोडलेले असतात, तेव्हा खाली दर्शविल्याप्रमाणे परिपथ असते.

तारांकित चे डेल्टा रूपांतरण वापरून, परिपथ पुढीलप्रमाणे बनते.

F1 U.B Madhu 23.03.20 D9

वापरली गेलेली उर्जा, \({W_Y} = \frac{{3V_L^2}}{{3R}} = \frac{{V_L^2}}{R}\)

म्हणून, WΔ = 3WY

त्यामुळे तारांकित रचनेमध्ये तीन समान रोधकांद्वारे वापरली जाणारी उर्जा ही डेल्टा रचनेमध्ये वीज वापराच्या 1/3 पट आहे.

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