Three independent mechanisms A, B and C have been incorporated for power saving in a plant producing respectively 30%, 40% and 10% efficiency. Assuming that they operate independently, what is the net power efficiency achieved?
(a) 62.2% (b) 68% (c) 61% (d) 64% (e) 56%

• Total inefficiency = (100-30)*(100-40)*(100-10)/1000000=37.8%
  Efficiency achieved = (100=37.8)% = 62.2%
• 6 years agoHelpfull: Yes(6) No(0)
• effficiency would be 66.4%[(100-30)*(100-20)*(100-40)/1000000]
• 6 years agoHelpfull: Yes(0) No(25)