(A) 25 (X)
(B) 45 (X)
(C) 65 (X)
(D) 20 ()
Answers: Minimum thermal efficiency of a steam boiler may be around 20 percent .
(A) 25 (X)
(B) 45 (X)
(C) 65 (X)
(D) 20 ()
Answers: Minimum thermal efficiency of a steam boiler may be around 20 percent .
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