Machine Design
The ball bearings are provided with a cage

To reduce friction
To prevent the lubricant from flowing out
To maintain the balls at a fixed distance apart
To facilitate slipping of balls

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
When a belt drive is transmitting maximum power,

Effective tension is half of centrifugal tension
Effective tension is equal to centrifugal tension
Driving tension on tight side is twice the centrifugal tension
Driving tension on slack side is equal to centrifugal tension

ANSWER DOWNLOAD EXAMIANS APP

Machine Design
Crowning on pulley helps

In increasing the slip of the belt
To keep the belt in centre on a pulley while it is in motion
To increase pulley life
In decreasing the slip of the belt

ANSWER DOWNLOAD EXAMIANS APP