4-పోల్ ఇండక్షన్ మోటారు 1800 rpm వేగాన్ని కలిగి ఉంటే, మోటారు పనిచేసే పౌనపున్యం:

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ALP CBT 2 Electrician Official Paper (Held On: 23 Jan 2019 Shift 3)
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  1. 60 Hz
  2. 40 Hz
  3. 30 Hz
  4. 50 Hz

Answer (Detailed Solution Below)

Option 1 : 60 Hz
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పద్ధతి:

ఇచ్చిన సమకాలీకరణ వేగం 

\({N_s} = \frac{{120f}}{P}\)

ఇక్కడ,

f = Hzలో సరఫరా పౌనపున్యం

P = ధ్రువాల సంఖ్య

Ns = rpmలో సమకాలిక వేగం

సాధన:

ఇచ్చిన-

Ns = 1800 rpm, P = 4

\(\therefore {1800} = \frac{{120 \times f}}{{4}}\)

f = 60 Hz

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