Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 7th Sem New 2171912 Oil Hydraulics And Pneumatics Previous Question Paper
1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?VII (NEW) EXAMINATION ? WINTER 2018
Subject Code: 2171912 Date: 19/11/2018
Subject Name: Oil Hydraulics & Pneumatics
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) Draw the general layout of hydraulic system. Explain the function of each
component.
03
(b) Define Control Valve. List the different types of control valves. 04
(c) Give the classification of Pumps. Sketch & Explain working of Rotary
Vane type of pump.
07
Q.2 (a) Write application of Hydraulic system & Pneumatic system. 03
(b) Sketch & Explain the working of Ge- rotor pump with neat sketch. 04
(c) Give ISO/ANSI symbol of following.
1. Hydraulic motor
2. Single acting cylinder with spring return actuator
3. 3/2 DCV
4. Pressure relief Valve
5. Variable flow control valve
6. Spring loaded accumulator
7. Air filter
07
OR
(c) Explain working of axial in line swash plate pump with neat sketch. 07
Q.3 (a) Draw speed controlled actuator, Meter- out circuits for DAC for
extension.
03
(b) Draw general layout of pneumatic system & write function of each
components.
04
(c) What is the function of pressure Reducing Valve? sketch & explain with
neat sketch the working of pressure reducing valve
07
OR
Q.3 (a) Sketch & explain Counter Balance valve construction & its working. 03
(b) List the Power loss in flow control circuits & explain in detail. 04
(c) Explain One Industrial application of hydraulic circuit with neat sketch. 07
Q.4 (a) Explain 4/3 sliding spool direction control valve working. 03
(b) Write a note on thermocouple type temperature sensor 04
(c) Bleed off Circuits ? sketch & explain its working. 07
OR
Q.4 (a) List the electric devices used in the control of fluid power system. 03
(b) What do you mean Automation? Give classification of Automation. 04
(c) Sketch & explain Pneumatic Circuit using Quick Exhaust valve. 07
Q.5 (a) What is an actuator? Draw hydraulic system operating double acting
actuator with 3/2 DCV
03
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1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?VII (NEW) EXAMINATION ? WINTER 2018
Subject Code: 2171912 Date: 19/11/2018
Subject Name: Oil Hydraulics & Pneumatics
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) Draw the general layout of hydraulic system. Explain the function of each
component.
03
(b) Define Control Valve. List the different types of control valves. 04
(c) Give the classification of Pumps. Sketch & Explain working of Rotary
Vane type of pump.
07
Q.2 (a) Write application of Hydraulic system & Pneumatic system. 03
(b) Sketch & Explain the working of Ge- rotor pump with neat sketch. 04
(c) Give ISO/ANSI symbol of following.
1. Hydraulic motor
2. Single acting cylinder with spring return actuator
3. 3/2 DCV
4. Pressure relief Valve
5. Variable flow control valve
6. Spring loaded accumulator
7. Air filter
07
OR
(c) Explain working of axial in line swash plate pump with neat sketch. 07
Q.3 (a) Draw speed controlled actuator, Meter- out circuits for DAC for
extension.
03
(b) Draw general layout of pneumatic system & write function of each
components.
04
(c) What is the function of pressure Reducing Valve? sketch & explain with
neat sketch the working of pressure reducing valve
07
OR
Q.3 (a) Sketch & explain Counter Balance valve construction & its working. 03
(b) List the Power loss in flow control circuits & explain in detail. 04
(c) Explain One Industrial application of hydraulic circuit with neat sketch. 07
Q.4 (a) Explain 4/3 sliding spool direction control valve working. 03
(b) Write a note on thermocouple type temperature sensor 04
(c) Bleed off Circuits ? sketch & explain its working. 07
OR
Q.4 (a) List the electric devices used in the control of fluid power system. 03
(b) What do you mean Automation? Give classification of Automation. 04
(c) Sketch & explain Pneumatic Circuit using Quick Exhaust valve. 07
Q.5 (a) What is an actuator? Draw hydraulic system operating double acting
actuator with 3/2 DCV
03
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2
(b) Describe Working of twin pressure valve with neat sketch & draw its
symbol
04
(c) Draw Symbol of filter & explain the working of by-pass type filter 07
OR
Q.5 (a) Explain Cascading Method for sequencing. 03
(b) If diameter of piston is 60 mm, diameter of piston rod is 10 mm, & air
pressure is 100 N/mm
2
, what will be the force in advance stroke & return
stroke.
04
(c) Draw Pneumatic circuit for operating DAC by 4/3 DCV. 07
*************
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This post was last modified on 20 February 2020