Two marks questions and answers

TWO MARKS QUESTIONS AND ANSWERS

1. List any two design considerations of a hydraulic or pneumatic circuit. 

The design considerations of a hydraulic or pneumatic circuit include:

(i) To perform the desired function of the application.

(ii) To achieve the expected efficiency of performance.

(iii) To provide assured safety and reliability of operations.

2. List any four information that are required for the design of a hydraulic or pneumatic system.

(i) Operating pressure

(ii) Operating sequence

(iii) Type of actuators required

(iv) Operating conditions

3. Define low cost automation.

Low cost automation is defined as a technology that creates some degree of automation around the existing equipment, tools, methods and people, using mostly standard components available in the market.

4. Mention any two roles of pneumatic systems in low cost automation.

Pneumatic systems are popularly used for low cost automation (LCA) applications due to their low cost, ease of fabrication, and safe operation.

5. What is a power pack?

A power pack is a self-contained (stand-alone unit) that is used instead of built-in power supply for hydraulic or pneumatic machinery.

6. What is a hydraulic power pack?

A hydraulic power pack is a self-contained (stand-alone unit) that is used instead of built-in power supply for hydraulic machinery.

7. What are the important components of a hydraulic power pack? 

The main components of a hydraulic power pack are: (i) a hydraulic reservoir, (ii) regulators; (iii) pressure supply lines and relief lines; (iv) a pump; and (v) a motor. 

8. What is a pneumatic power pack?

A pneumatic power pack is a self-contained (stand-alone unit) that is used instead of built-in power supply for pneumatic machinery.

9. What are the important components of a pneumatic power pack?

The main components of a pneumatic power pack are: (i) a motor, (ii) a compressor; (iii) an air cooler; (iv) an air dryer; and (v) a FRL unit.