MCQ PracticeAdvantages of use of preheated combustion air areSubject: Chemical EngineeringTopic: Furnace TechnologyASaving in fuel consumptionBReduction in scale lossesCIncrease in flame temperatureDAll of the aboveCorrect Answer: DPractice QuizBack to MCQsRelated MCQsThe Q of a tuned amplifier is 50. If the resonant frequency for the amplifier isThe stabilisation of operating point in potential divider method is provided byA class C amplifier always drives ___________ load