The life of bearing is expressed ina) lakhs of revolutionsb) billions...
The life of a bearing refers to the length of time or number of rotations that a bearing can operate before it fails or needs to be replaced. It is an important consideration in the design and selection of bearings for various applications. In this particular question, the options given are expressed in terms of revolutions, i.e., the number of times a bearing completes a full rotation.
Explanation:
- Life of a bearing: The life of a bearing is typically defined as the number of revolutions or operating hours that a bearing can withstand before it fails due to fatigue or wear. It is influenced by various factors such as load, speed, lubrication, and operating conditions.
- Expressed in revolutions: The options provided in the question express the life of a bearing in terms of revolutions. This means that the number given represents the number of times the bearing can rotate before it reaches the end of its operational life.
- Lakhs of revolutions: The term "lakhs" refers to a unit in the Indian numbering system, which represents one hundred thousand. So, if the life of a bearing is expressed in lakhs of revolutions, it means that the bearing can withstand a certain number of hundred thousand rotations before failure.
- Billions of revolutions: Similarly, if the life of a bearing is expressed in billions of revolutions, it means that the bearing can withstand a certain number of billion rotations before failure. This unit represents a much larger number compared to lakhs.
- Thousands of revolutions: If the life of a bearing is expressed in thousands of revolutions, it means that the bearing can withstand a certain number of thousand rotations before failure. This unit represents a smaller number compared to lakhs and billions.
- Correct answer: The correct answer to the question is 'None of these' because none of the options provided in the question are the standard units used to express the life of a bearing. The life of a bearing is typically expressed in terms of operating hours or the number of cycles, not in lakhs, billions, or thousands of revolutions.
In conclusion, the life of a bearing is not expressed in lakhs, billions, or thousands of revolutions. It is important to consider the correct units and factors when assessing the life of a bearing in order to ensure its proper operation and longevity.
The life of bearing is expressed ina) lakhs of revolutionsb) billions...
Life of bearings is generally expressed as millions of revolution.