5 മണിക്കൂർ പീക്ക് ലോഡിൽ പ്രവർത്തിക്കുന്ന 80% കാര്യക്ഷമമായ, 2kW (ഇൻപുട്ട്) മോട്ടോർ എത്ര ഊർജ്ജം ഉപയോഗിക്കുന്നു?

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ALP CBT 2 Electrician Previous Paper: Held on 22 Jan 2019 Shift 1
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  1. 4 kWh
  2. 16 kWh
  3. 2 kWh
  4. 8 kWh

Answer (Detailed Solution Below)

Option 4 : 8 kWh
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Detailed Solution

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ആശയം:

കാര്യക്ഷമത (η) = (ഔട്ട്പുട്ട് പവർ)/(ഇൻപുട്ട് പവർ)

ഊർജ്ജം = (പവർ) (സമയം)

കണക്കുകൂട്ടൽ:

ഔട്ട്പുട്ട് പവർ = (ഇൻപുട്ട് പവർ) (കാര്യക്ഷമത) = 2 x 0.8

ഔട്ട്പുട്ട് പവർ = 1.6 kW

ഔട്ട്പുട്ട് ഊർജ്ജം = 1.6 x 5 = 8 kWh

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