Question

The liquid used in hydraulic transmission is:

• A. oil
• B. water
• C. steam
• D. any volatile liquid

Hint:

Oil is preferred in hydraulic systems because it has excellent lubricating properties, low compressibility, and can operate at high pressures.

Answer 1

The Correct Option is A

Step 1: Understanding Hydraulic Transmission Liquids.
Hydraulic transmission systems require liquids with specific properties, such as being incompressible and providing lubrication. The most commonly used liquid for this purpose is oil.

Step 2: Analysis of options.
- (A) oil: Oil is the most commonly used fluid in hydraulic systems.
- (B) water: Water is used in some systems but is less common due to its lower lubricating properties.
- (C) steam: Steam is not used in hydraulic systems due to its compressibility.
- (D) any volatile liquid: Volatile liquids are generally not suitable because they may evaporate or cause instability in hydraulic systems.

Step 3: Conclusion.
The correct answer is (A) oil, as it is the most commonly used liquid in hydraulic transmission.