Two Marks Q&A

 two marks questions and answers: Hydraulic Actuators and Control Components - Hydraulic Actuators and Control Components

TWO MARKS QUESTIONS AND ANSWERS

1. What are fluid power symbols ?

Fluid power symbols are used to represent individual components in fluid power circuit diagrams, which identify components and their functions uniquely.

2. Draw the graphic symbols for the following pumps :

(a) Fixed displacement bidirectional pump, and

(b) Variable displacement unidirectional pump. 

Ans.

3. Draw the ANSI symbols for the following motors : 

(a) Fixed displacement unidirectional motor, and 

(b) Variable displacement bidirectional motor. Ans.

Ans.

4. Give the hydraulic symbols for (a) single-acting and (b) double-acting cylinders. 

Ans.

5. Give the fluid power symbols for the 3/2- and 4/3-way valves. 

Ans.

6. How can you indicate the direction of flow (i) for hydraulic fluid, and (ii) for pneumatic fluid.

7. For the following graphic symbols shown, identify their mode of operation/actuation.

Ans.

 (a) Push button actuation,

(b) Pedal actuation,

(c) Lever actuation, and

(d) Solenoid actuation.

8. Draw the ANSI symbols for the following hydraulic components :

(a) Reservoir,

(b) Filter, 

(c) Cooler, and

(d) Accumulator.

Ans.

9. The following graphic symbols are used for indicating some measuring devices. Identify them.

Ans.

(a) Filling level indicator, 

(b) Thermometer,

(c) Pressure gauge, 

(d) Flow meter.

REVIEW QUESTIONS

1. Draw ANSI fluid power symbols for the following cylinder types :

(a) Single-acting cylinder with spring return,

(b) Double-acting cylinder with through piston rod,

(c) Differential cylinder, and

(d) Double-acting telescopic cylinder.

2. Draw the graphic symbols for a pressure relief valve and a 3-way pressure regulator.

3. Draw ANSI symbol for adjustable flow control valve with throttle.

4. Give the fluid power symbols for the following non-return valves :

(a) Spring-loaded non-return valve, and

(b) Pilot controlled non-return valve.

5. Draw the ANSI symbols for the following coupling types :

(a) Coupling with check valve," and

(b) Half of quick release-coupling without valve.

6. Draw the graphic symbols for hydraulic power pack.