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(i) They are the logarithmic plots used to represent transfer functions In hydrostatic lubrication. waiting for your reply, please sir send me all related mechanical engineering questions on my e-mail: adekunlejohnson809@gmail In a kinematic pair, if the elements have surface contact when in motion, the pair is called lower pair and if elements have line or point contact the pair is called higher pair. What is the direction of tangential acceleration ? It is used to determine velocity of flow in pipe. A comprehensive database of more than 78 engineering quizzes online, test your knowledge with engineering quiz questions. This quiz is a practice test for all the engineering students out there who are preparing for any general engineering exam. (iii) improvement in speed regulation. What is the difference between lower pair and higher pair ? 31. 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