MCQ PracticeWhy are the helical gears used commonly in transmission over spur gears?Subject: Automobile EngineeringTopic: Automobile EngineALow cost and high strengthBLow noise level and high strengthCLow noise level and economyDLow noise level and low costCorrect 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