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12171. A steel containing ferrite and pearlite is

September 13, 2025 by Admin

hard

soft

tough

hard and tough

✅ The correct answer is option B.

Categories Engineering, Engineering Materials MCQs, Mechanical Engineering Tags Engineering Materials MCQs, Engineering MCQs, Mechanical Engineering MCQs

12168. If T1 and T2 are the tensions on the tight and slack sides of the belt respectively, and Tc is the centrifugal tension, then initial tension in the belt is equal to

12174. A machine mounted on a single coil spring has a period of free vibration of tp . If the spring is cut into four equal parts and placed in parallel and the machine is mounted on them, then the period of free vibration of the new system will become

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