4-പോൾ ഇൻഡക്ഷൻ മോട്ടോറിന് 1800 rpm വേഗതയുണ്ടെങ്കിൽ, മോട്ടോർ പ്രവർത്തിക്കുന്ന ആവൃത്തി ഇതാണ്:

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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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ആശയം:

ഏകകാലിക വേഗത നൽകിയിരിക്കുന്നത്

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

ഇവിടെ,

f =  Hz ലെ വിതരണ ആവൃത്തി 

P = പോളുകളുടെ എണ്ണം 

Ns = rpm ലെ ഏകകാലിക വേഗത 

കണക്കുകൂട്ടൽ:

നൽകിയത്-

Ns = 1800 rpm, P = 4

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

f = 60 Hz

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