MCQ PracticeEconomisers improve boiler efficiency bySubject: Electrical EngineeringTopic: Power Plant Engineering In EeA1 to 5%B4 to 10%C10 to 12%D8 to 12%Correct Answer: BPractice QuizBack to MCQsRelated MCQsCurrent flows in a circuit whenEighttenths coulomb passes a point in 4 s. The current in amperes isThe unit of electrical charge is the