Q. Consider the following statements about hydraulic systems:
1.They work on the principle of Newton’s 2nd law of motion.
2.In a hydraulic system, pressure is created by applying force to a fluid and it is subsequently transmitted equally in all directions.
3.They have high power to weight ratio as compared to mechanical systems.
How many of the above statements are correct?
Answer: B
Notes:
Explanation: Statements 2 and 3 are correct
Statement 1 is incorrect: A hydraulics system is based on the simple principle of Pascal’s law, named for the 17th century French scientist Blaise Pascal.
Statement 2 is correct: In a hydraulic system, pressure is created by applying force to a fluid and it is subsequently transmitted equally in all directions, a small force applied over a small area can create a much larger force over a larger area.
Statement 3 is correct: Advantages: Hydraulics have many advantages over mechanical methods of transmitting energy.
- The principal ones are smooth movements, high power to weight ratio, better heat dissipation, smooth controls, and higher precision.
Source: TH
