DERARTMENT OF TECHNICAL EDUCATION
DIPLOMA COURSE IN MECHANICAL ENGINEERING
FOURTH SEMESTER
MODEL QUESTION PAPER
FLUID POWER ENGINEERING
Time: 3Hrs Max marks: 100
Note: 1.Section I is compulsory
2. Answer any six full questions from Section II, Section III, and Section IV
Choosing at least two from each section
SECTION -I
1 A) Fill in the blanks with appropriate words:- 1X5
I) The gear pump is ______________type of pump
ii) A 4/3 valve consists of ____positions ____ports
iii) According to Pascal law the pressure enclosed fluid is ____through out the practical system
iv) The _______ valves are used to restrict the flow in one direction.
v) In spool valve, the spools are moving _____within the valve body.
B) Explain the basic logics used in fluid logics. 5
SECTION -Ii
2 a) State the importance of Fluid Power in Industrial Automation 5
b) List the elements of automation 5
c) State the Basic Methods of Transmission of power. 5
3 a) Give the classification of pumps . 5
b) Sketch and explain external gear pump 5
c) Explain briefly 4/3 direction control valve. 5
4 a) Define actuators 2
b) Explain with a neat sketch Construction and working of a double acting cylinder 8
c) Explain the working of unidirectional hydraulic motor 5
SECTION -III
5 a) What are Reservoirs? 2
b) Explain the function of hydraulic accumulator-spring loaded with a neat sketch. 7
c) Explain the working of an intensifier with a neat sketch . 6
6 a) Define pneumatics and mention applications of pneumatics. . 5
b) Sketch and explain reciprocating piston compressor 6
c) Explain briefly sliding vane motor 4
7 a) Write brief note on ports and positions 4
b) Explain the control of double acting cylinder using 4/2 DCV 6
c) Sketch and explain Basic pneumatic circuit 5
SECTION -IV
8 a) State the advantages of combination of circuits 5
b) Compare Hydraulic and pneumatic systems 5
c) Briefly explain electro hydraulic system 5
9 a) State any 3 advantages and 3 disadvantage of Fluid Logic/Fluidics . 6
b) with an example, the implementation of AND logic 5
c) Briefly explain-Reflex Sensors 4
10 Write short note on any three of the following
5x3=15
a. common faults in hydraulic system
b. causes of contamination
c. Preventive measures.
d. Maintenance schedule
e. Common faults in pneumatic system
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