Oil Hydraulics & Pneumatics(Department Elective - I) — Summer 2022

Give the classification of accumulators with mentioning application of each.

Explain construction and operation of pressure relief valve with neat sketch.

Explain spool type 4/3 direction control valve with neat sketch.

What are the basic steps of circuit design?

Draw the symbols of 1. Pressure reducing valve and 2. Pressure relief valve. Also give the function of each.

Explain with sketch an internal gear pump.

Draw the symbol of 1. Unidirectional variable displacement pump, 2. Unloading valve, 3. 4/3 DCV, 4. Variable restriction flow control valve, 5. Time delay valve, 6. Quick exhaust valve, 7. Single acting cylinder with spring return.

Give the difference between hydraulic system and pneumatic system.

Mention various properties of hydraulic Oil used in hydraulic system

Explain various hydraulic actuators.

Name the different types of filters and Explain any one of it.

Draw the general layout of pneumatic system and also give the function of each component.

Explain FRL unit used in pneumatic system.

What is meant by positive displacement pump? Classify the same.

Explain briefly shuttle valve.

Explain with neat sketch regenerative hydraulic circuit.

Explain briefly meter in circuit.

Give the importance and classification of automation.

List down common causes of failure of pneumatic system and suggest remedy for the same.

Give the name of different types of electrical devices used in hydraulic systems.

Give the difference between hydrostatic and hydrodynamic system.

Explain FRL unit used in pneumatic system.

What are basic the requirements of control valves?

Give advantages and disadvantages of screw pump.

Explain working of sequence valve with sketch.