12.
When the bearing is subjected to large fluctuations of load and heavy impacts, the bearing characteristic number should be _________ the bearing modulus.

13.
When the shaft rotates in anticlockwise direction at slow speed in a bearing, it will

14.
When the shaft rotates in anticlockwise direction at high speed in a bearing, it will

15.
The objective of idler pulley in belt drive is to

16.
The objective of 'crowning' of the flat pulleys of belt drive is to

17.
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

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