Year : TYME 2016-17Sub: Industrial Fluid Power (17608)
Assignment No. 1
Introduction to oil hydraulic systems
Sr. No. / Question / Exam / Marks1 / Describe with neat sketch general layout of hydraulic system. / Sample Paper
G Scheme / 4
2 / Draw general layout of Hydraulic circuit and label the components. / Sample Paper
G Scheme / 3
3 / Give merits and limitations of hydraulic system / Sample Paper
G Scheme / 4
4 / Suggest suitable system with reasoning for following applications
i) JCB, ii) Robot arm, iii) Universal testing machine,
iv) Bolt tightening gun. / Sample Paper
G Scheme / 6
5 / List the essential properties of oil used in hydraulic system / Sample Paper
G Scheme / 4
6 / State the application of hydraulic system. / 4
7 / Draw and explain the working of hydraulic system with its general layout. / W2014 / 4
8 / Describe essential properties of oils used in oil hydraulic circuits (Any eight) / S2015 / 4
9 / Draw sketch of a simple oil hydraulic circuit and write down the name and working function of each of the components used in it. / S2015 / 4
10 / State any four merits and any four limitations of hydraulic system. / S2015 / 4
11 / List any four desirable properties of hydraulic oil used in hydraulic system. / W2015 / 4
12 / Give merits and demerits of hydraulic system. / W2015 / 4
13 / Enlist any four applications of oil hydraulic system. / S2016 / 4
14 / Enlist the desirable properties of oil used in hydraulic system. / S2016 / 4
15 / Write any four applications of oil hydraulic system. / W2016 / 4
16 / Write any four advantages of oil hydraulic system. / W2016 / 4
Assignment No. 2
Pumps
Sr. No. / Question / Exam / Marks1 / Describe construction and working of External gear pump with a neat sketch. / Sample Paper
G Scheme / 4
2 / Draw symbol of, Unidirectional hydraulic pump. / Sample Paper
G Scheme / 1
3 / Describe the construction and working of radial piston pump. / Sample Paper
G Scheme / 6
4 / Describe with neat sketch working of variable displacement vane type pump and also draw symbol. / Sample Paper
G Scheme / 6
5 / Give the classification of rotary pumps. Explain why only rotary pumps are preferred for oil hydraulic systems. / S2014 / 4
6 / With a neat sketch, explain the functioning of lobe pump. Give any four advantages of gear pumps / S2014 / 4
7 / Give the classification of positive displacement pump. / W2014 / 4
8 / Write the causes and remedies for the following
i)Excessive heat in oil
ii)Noisy pump
iii)Low pressure in system. / W2014 / 4
9 / Explain working of axial piston pump with neat sketch. / W2014 / 4
10 / Explain gerotor pump with neat sketch. / W2014 / 4
11 / Draw symbols of 1) Unidirectional hydraulic pump / S2015 / 2
12 / Explain construction and working principle of Internal Gear pump. / S2015 / 4
13 / Sketch and explain working of Gerotor pump used in hydraulic circuits. / S2015 / 4
14 / Explain with sketch swash plate Axial piston pump. / S2015 / 4
15 / State the importance of pump used in hydraulic system. Give its classification. / W2015 / 4
16 / Differentiate between gear pump and piston pump on the basis of function, construction, pressure range and delivery of oil. / W2015 / 4
17 / Explain vain type pump with neat sketch. / W2015 / 6
18 / Sketch and explain gerotor pump. / W2015 / 4
19 / What are the selection criteria for hydraulic pumps? / W2015 / 4
20 / Explain with neat sketch the construction and working of gear pump. / S2016 / 6
21 / Explain with neat sketch the construction of gerotorpump. / S2016 / 4
22 / What is swash plate? What is its use? What will happen if we change the angle of swash plate? Explain with sketch / W2016 / 8
23 / Draw symbols of Unidirectional fixed displacement pump. / W2016 / 4
24 / Explain construction and working of gear pump. / W2016 / 4
Assignment No. 3
Valves
Sr. No. / Question / Exam / Marks1 / Draw & describe working of Direct operated pressure relief valve. / Sample Paper
G Scheme / 4
2 / Draw symbol of ,
i) Variable flow control valve with integral check valve,
ii) Pressure relief valve / Sample Paper
G Scheme / 2
3 / State the methods of actuation and represent it symbolically. / Sample Paper
G Scheme / 4
4 / State different types of flow control valve and describe any one with neat sketch. / Sample Paper
G Scheme / 4
5 / Describe construction and working of pressure reducing valve with line sketch. / Sample Paper
G Scheme / 4
6 / With a neat sketch describe pressure compensated flow control valve. Also show symbol of the same. / Sample Paper
G Scheme / 6
7 / Give classification of DC valve on following basis,
i) Actuation, ii) Port and position / Sample Paper
G Scheme / 4
8 / Give one function of filter, oil seal, accumulator and pressure relief valve used in hydraulic circuit. / Sample Paper
G Scheme / 1
9 / From the given component answer the following question.
i) Write the name of shown component.
ii) Name the parts denoted by arrow.
iii) Give its application.
iv) Draw the symbol / Sample Paper
G Scheme / 4
10 / Draw symbol of
i) Temperature and pressure compensated flow control valve
ii) Pressure relief valve,
iii) Pedal operated 4/3 DC valve. / Sample Paper
G Scheme / 3
11 / With a neat sketch, explain the functioning of simple pressure relief valve. / S2014 / 4
12 / Sketch the two positions of 4/2 rotary spool type DCV and explain in brief. / S2014 / 4
13 / Draw the symbols of the following:
i)Pressure compensated flow control valve.
ii)Flow divider
iii)4/2 direction control valve. / W2014 / 4
14 / Differentiate between pressure relief valve and pressure reducing valve with respect to its function, symbol, normal position, and operated element. / W2014 / 4
15 / Give the classification of D. C. (Direction Control) valve with respect to following points.
i) Valve element used in construction
ii) Number of ports and positions.
iii) Methods of actuation / operation. / W2014 / 4
16 / Explain the working of pressure compensated flow control valve used in hydraulic system. / W2014 / 4
17 / Draw symbols of Pilot operated check valve and Sequence valve / S2015 / 2
18 / Draw sketch of needle valve and explain its working. / S2015 / 4
19 / Describe with sketch pressure compensated flow control valve. / S2015 / 4
20 / Explain construction and working principle of Rotary Spool type DC valve with sketch. / S2015 / 4
21 / Draw symbol of Pilot operated pressure relief valve and Pedal operated 4/3 DC valve / W2015 / 4
22 / Explain with neat sketches working of rotary spool type DC valve.
23 / Describe construction and working of pressure reducing valve. / W2015 / 4
24 / With a neat sketch, explain pressure operated flow control valve. Draw the symbol for the same. / W2015 / 4
25 / Draw neat sketch of 4/2 valve. Explain its working. / S2016 / 4
26 / Enlist any four sources of heat generation in hydraulic system. / S2016 / 4
27 / Draw symbols of:
1) 4/3 direction control valve
2) Pilot operated pressure relief valve
3) Sequence valve / S2016 / 6
28 / State the functions of pressure relief valve for pneumatic system. Explain its working with neat sketch. / S2016 / 4
29 / State advantages and disadvantages of poppet type directional control valve. / S2016 / 4
30 / Classify flow control valves with their application. / S2016 / 4
31 / Draw the symbol:
(i) unloading valve
(ii) simple check valve / S2016 / 4
32 / Explain with neat sketch the working of rotary spool type DC valve. / W2016 / 6
33 / Why pressure relief valve is used in hydraulic circuit? Explain in details with neat sketches. / W2016 / 8
34 / What is the use of direction control valve? Explain with sketch. / W2016 / 4
Assignment No. 4
Actuators
Sr. No. / Question / Exam / MarksClassify Hydraulic actuators. / Sample Paper
G Scheme / 3
State mounting methods for actuators. / Sample Paper
G Scheme / 3
Why cushioning is provided in linear actuator? Draw symbol of double acting cylinder with cushioning on both ends. / Sample Paper
G Scheme / 4
What is Tandem cylinder? What is its beneficial property? Explain with sketch and draw its symbol. / S2015 / 4
Classify hydraulic actuators. / W2015 / 4
Explain working of telescopic cylinder with neat sketch. / W2015 / 4
State the functions of actuator / S2016 / 2
Explain with sketch the working of double acting cylinder. / S2016 / 8
Compare linear actuators and rotary actuators. / W2016 / 6
Draw symbol of any three types of Hydraulic motors. / W2016 / 4
Assignment No. 5 (Accessories)
Sr. No. / Question / Exam / Marks1 / State types of oil seals and give at least two uses each in hydraulic circuit. / Sample G Scheme / 4
2 / Classify accumulators and state their functions. / Sample G Scheme / 4
3 / What is the use of filter in Hydraulic circuit. Describe proportional flow filter with a neat sketch. / Sample G Scheme / 4
4 / Why cushioning is provided in linear actuator? Draw symbol of double acting cylinder with cushioning on both ends. / Sample G Scheme / 3
5 / Give one function of filter, oil seal, and accumulator used in hydraulic circuit. / Sample G Scheme / 3
6 / List the function of following
i)Oil Seal
ii)Accumulator
iii)Heat exchanger / W2014 / 4
7 / Give the functions of hydraulic seals. Differentiate between static seal and dynamic seal. / S2014 / 4
8 / State any four functions of hydraulic seals and state any four reasons for seal failure. / S2015 / 4
9 / State the function of Accumulator in circuit? State different types of accumulator and explain any one with sketch. / S2015 / 6
10 / Give classification of filters used in hydraulic system. Explain any one of them. / W2015 / 4
11 / What is the function of hydraulic accumulator? How they are classified? Explain any one with suitable sketch. / W2015 / 6
12 / State any four reasons of failure of hydraulic seals. / W2015 / 4
13 / State the functions of filter / S2016 / 2
14 / Why accumulators are used in hydraulic circuits? Explain any one of them with sketch. / S2016 / 4
15 / What is hose? Enlist factors affecting on selection of hose in hydraulic system. State different layers of hose. / S2016 / 8
16 / What are the various materials used for pipes in hydraulic circuit? / S2016 / 4
17 / Enlist the factors to be considered for selection of seal. What are the main causes of seal failure? / S2016 / 6
18 / What are the effects of contaminants in the oil? / W2016 / 2
19 / Draw symbols of:
(i) Oil reservoir (ii) Oil filter(iii) Heat exchanger / W2016 / 3
20 / In cold climate why oil tank is equipped with oil heaters? Explain. / W2016 / 4
Assignment No. 6
Hydraulic Circuits
Sr. No. / Question / Exam / Marks1 / Draw Bleed off circuit and label all the components. / Sample Paper
G Scheme / 3
2 / Suggest and draw circuit for linear speed control during positive load. / Sample Paper
G Scheme / 3
3 / Describe how speed of cutting stroke of shaper machine is regulated with neat labeled sketch. / Sample Paper
G Scheme / 8
4 / Using DA cylinder, flow control valve with check valve, pressure relief valve, filter, DC valve develop a circuit for speed control during a return stroke. / Sample Paper
G Scheme / 8
5 / Draw labeled meter in circuit and describe its operation. / Sample Paper
G Scheme / 4
6 / Sketch and explain “meter-in hydraulic circuit” to control the speed of extension of DAC. Explain why meter-in circuit is not preferred for over-running loads. / S2014 / 8
7 / With the help of neat circuit diagram, explain the functioning of hydraulic shaper. / S2014 / 8
8 / Draw hydraulic circuit for a punch press. Explain how the use of unloading valve can save power. If pressure settings of relief valve and unloading valve are 500 bar and 5 bar respectively, and pump discharge is 0.04 m3/sec,
Calculate :
i) Power consumption without unloading valve in circuit
ii) Power consumption with unloading valve in circuit
iii) Percentage saving in power by adopting unloading valve.
(Take 1 bar = 105 N/m2 ) / S2014 / 8
9 / Draw sketch of a simple oil hydraulic circuit and write down the name and working function of each of the components used in it. / S2015 / 4
10 / Compare meter-in circuit with meter-out circuit with respect to well labeled diagram, working, features, advantages, limitations and applications. / W2014 / 4
11 / Explain with neat sketch the working of hydraulic circuit used for milling machine. / W2014 / 4
12 / Explain with neat sketch the working of motion synchronization circuit with the help of flow divider, to control the movement of two double acting cylinders. / W2014 / 4
13 / Draw and explain working of Bleed-off hydraulic circuit. / S2015 / 8
14 / Draw and label the components in meter - in hydraulic circuit. / S2015 / 4
15 / Explain with neat sketch working of hydraulic circuit for
shaping machine. / W2015 / 8
16 / Using double acting cylinder, flow control valve with check
valve, pressure relief valve, filter and DC valve, develop a
circuit for speed control during a return stroke. / W2015 / 8
17 / Explain with neat sketch the working of hydraulic circuit for shaping machine. / S2016 / 8
18 / Explain with neat sketch the working and applications of meter-in hydraulic circuit. / S2016 / 4
19 / Draw pilot operated DA cylinder circuit using 4 X 2 DC valve and 3 X 2 pilot valve. / W2016 / 4
20 / Draw the hydraulic circuit showing control of DA cylinder. Using 4 × 2 DC valve. Explain the working in brief. / W2016 / 4
21 / Draw actual hydraulic system and explain its working. / W2016 / 6
22 / Explain the principle of regenerative circuit. / W2016 / 4
23 / Draw bleed off circuit and label it. / W2016 / 4
24 / Compare meter in circuit and meter out circuit. / W2016 / 4
25 / Draw the hydraulic circuit for shaping machine. Explain its working. / W2016 / 4
Assignment No. 7
Introduction to Pneumatic Systems
Sr. No. / Question / Exam / Marks1 / Differentiate between Hydraulic and Pneumatic circuit with respect to the following parameter.
i) Medium, ii) Pressure, iii) Application, iv) Lubrication. / Sample G Scheme / 4
2 / State merits and limitation of pneumatic system. / Sample G Scheme / 3
3 / Rearrange the following component and draw block diagram of general pneumatic system.
i) Flow Control Valve, ii) Compressor, iii) Direction Control Valve, iv) FRL Unit, v) Actuator, vi) Muffler / Sample G Scheme / 4
4 / List the various components of pneumatic circuit and give its application. / Sample G Scheme / 4
5 / What are the advantages and disadvantages of pneumatic system? / W2014 / 4
6 / Draw general layout of pneumatic system and label the components. / S2014 / 4
7 / List any three merits and three demerits of pneumatic systems with reasoning. / S2014 / 6
8 / Draw a general layout and symbolic representation of pneumatic system. / W2015 / 4
9 / Write any four limitations of pneumatic system. / W2015 / 4
10 / State any four advantages and disadvantages of pneumatic system. / S2016 / 4
11 / What are the features of air? List any four features. / S2016 / 4
12 / Draw general layout of pneumatic system. / S2016 / 4
13 / Draw a general layout of pneumatic system and state the function of components. / W2016 / 4
14 / What are the limitations of pneumatic system? / W2016 / 4
Assignment No. 8
Compressor
Sr. No. / Question / Exam / Marks1 / State types of air compressor and describe vane type air compressor. / Sample G Scheme / 4
2 / Give the classification of air compressors. / W2014 / 4
3 / Give detailed classification of air compressors. / S2014 / 4
4 / Define F.A.D. of an air compressor. If an air compressor is delivering 0.15 m3/min of compressed air at 12 bar pressure, calculate F.A.D. / S2014 / 4
5 / With a neat sketch, explain the functioning of liquid ring vane compressor. / S2014 / 6
6 / Write construction and working of double acting reciprocating compressor with neat sketch. / S2015 / 4
7 / Explain reciprocating compressor used in pneumatic system. / W2015 / 4
8 / Draw a neat sketch of two stage air compressor and label it’sparts. / W2015 / 4
9 / Explain the construction and working of doubled acting reciprocating compressor with neat sketch. / W2016 / 8
Assignment No. 9
Control Valves of Pneumatic System
Sr. No. / Question / Exam / Marks1 / Draw symbol of 5/3 DCV / Sample Paper
G Scheme / 1
2 / Describe pressure regulating valve with neat sketch. / Sample Paper
G Scheme / 4
3 / Draw the symbols of the following
i)3/2 d. C. valve ii) Shuttle valve / W2014 / 4
4 / Explain the quick exhaust valve. / W2014 / 4
5 / Explain shuttle valve with neat sketch. / W2014 / 4
6 / Explain non-return type flow control valve used in pneumatic system, with neat sketch. / W2014 / 4
7 / Explain the working of push button operated 5/2 D. C. valve used in pneumatics, with neat sketch and its symbol. / W2014 / 4
8 / Explain pressure relief valve used in pneumatic system. / W2014 / 4
9 / What are the main three types of control valves ? Give the purpose of each of them in pneumatic systems. / S2014 / 4
10 / Explain why 4/2 DCV is preferred for hydraulic systems and 5/2 DCV for pneumatic system. / S2014 / 4
11 / Sketch the two positions of sliding spool type 3/2 DCV and explain in brief. / S2014 / 6
12 / Sketch and explain working of 5/2 DC pneumatic valve.
P / S2015 / 4
13 / Draw a neat sketch of working of push button operated
5 × 2 DC valve used in pneumatic system. / W2015 / 4
14 / What are the different types of pressure regulator? Explain any one of them with neat sketch. / S2016 / 8
15 / What is the use of direction control valve? Explain with sketch. / W2016 / 4
16 / Draw symbol of:
1) 2 × 2 DC valve
2) Fixed type flow control valve
3) Pressured relief valve. / W2016 / 4
17 / Explain working of directly operated (Poppet type) check valve with neat sketch. / W2016 / 4
Assignment No. 10
Actuators of Pneumatic System
Sr. No. / Question / Exam / Marks1 / With neat sketch describe construction and working of pneumatic DA cylinder. / Sample G Scheme / 4
2 / Classify pneumatic actuators on the basis of i) Motion ii) Mode of action iii) Displacement and describe telescopic cylinder with sketch. / Sample G Scheme / 8
3 / Differentiate air motor with electric motor and hydraulic motor with respect to its function, symbol, normal position and operated element. / W2014 / 4
4 / Give the classification of air motors and explain any one of it. / W2014 / 4
5 / Draw detailed symbol of F R L unit and time delay valve. / S2014 / 4
6 / With neat sketch describe construction and working of pneumatic DA cylinder. / S2015 / 4
7 / Classify pneumatic actuators on the basis of:
(i) Motion
(ii) Mode of action
(iii) Displacement and
(iv) Describe telescopic cylinder with sketch / S2015 / 8
8 / Explain with sketch any one type of air motor. / W2015 / 4
9 / Compare pneumatic motor with electric motor. / W2015 / 4
10 / Explain with neat sketch, working of double acting air cylinder. / W2015 / 4
11 / What is the meaning of unidirectional air motor and bi directional air motor? Explain with sketch and draw symbol of both. / W2016 / 4
Assignment No. 11
Accessories of Pneumatic System
Sr. No. / Question / Exam / Marks1 / Draw symbol of FRL unit and state function of each element in it. / Scheme, G Scheme / 4
2 / Give the function of FRL unit and also draw its symbol. / Scheme, G Scheme / 4
3 / Describe with neat sketch construction and working of pneumatic hose. / Scheme, G Scheme / 4
4 / List the factors to be considered for selecting the pipes while designing the pneumatic system. / W2014 / 4
5 / Explain function of FRL unit with neat sketch. / W2014 / 4
6 / Draw the symbols of
i)Mufler ii) Air receiver / W2014 / 4
7 / Explain the working of pressure regulator with neat sketch. / W2014 / 4
8 / Enlist the problems encountered due to moisture condensation in pneumatic systems. Name the different types of air dryers used to avoid moisture
condensation. / S2014 / 6
9 / State the various losses in pipes in pneumatic system. / W2015 / 4
10 / Sketch and label construction details of air receiver of pneumatic system. / S2015 / 4
11 / Sketch and label construction details of pneumatic hose. / S2015 / 4
12 / What is FRL unit? Explain its function with the help of sketch. Draw separate and combined symbol of FRL unit. / S2015 / 8
13 / Explain what is ferrule fitting used in pneumatic circuits. / S2015 / 4
14 / Write any eight industrial applications of pneumatic system. / S2015 / 4
15 / Give the function of FRL unit. Draw it’s symbol. / W2015 / 4
16 / What is FRL? State its importance. / S2016 / 4
17 / Draw constructional details of pneumatic hose. Why hose is required in pneumatic circuits? / W2016 / 4
18 / Draw symbol of muffler / W2016 / 2
Assignment No. 12