Question
Download Solution PDFएक 220 V DC शंट मोटर 630 rpm पर चलती है जब आर्मेचर धारा 50 A होता है। यदि बलाघूर्ण को दोगुना कर दिया जाए तो गति का पता लगाएं। आर्मेचर प्रतिरोध = 0.2 Ω मान लें।
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFसंकल्पना:
DC शंट मोटर का EMF समीकरण निम्न है:
E = V - IaRa
DC मोटर की गति निम्न द्वारा दी जाती है:
E = kϕω
DC मोटर द्वारा उत्पादित बलाघूर्ण निम्न है:
T = kϕIa
जहां, E = पश्च EMF
V = टर्मिनल वोल्टेज
Ia = आर्मेचर धारा
Ra = आर्मेचर प्रतिरोध
ω = rpm में गति
T = बलाघूर्ण
गणना:
दिया गया है, V = 220 वोल्ट
Ia = 50 A
Ra = 0.2Ω
E1 = 220 - ( 50 × 0.2)
E1 = 210 V
यदि बलाघूर्ण दोगुना हो जाता है, तो आर्मेचर धारा भी दोगुना हो जाती है।
E2 = 220 - ( 100 × 0.2)
E2 = 200 V
\({E_1 \over E_2}= {N_1 \over N_2}\)
\({210 \over 200}= {630 \over N_2}\)
N2 = 600 rpm
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