Maharashtra State Board of Technical Education 2008 Diploma Mechanical Engineering subject Industrial Fluid students - Question Paper

Sample ques. Paper

Course Name : Mechanical Engineering

Course Code : ME/ PT/ PG/ MH

9151

Semester : 6th for ME/PT/PG and 7th for MH
Subject : Industrial Fluid Power
Marks : 80 Time: three Hours

Instruction:

1. All ques. are compulsory.
2. Illustrate your answers with neat sketches wherever necessary.
3. Figures to the right indicate full marks.
4. presume suitable data if necessary.
5. Preferably, write answers in sequential order.
Q.1 Attempt any 4 of the following:
16 Marks
a. discuss working of an external gear pump with neat sketch.
b. Enlist various rotary compressors. discuss working of “Lobe Compressor”.
c. Draw the diagram for pressure regulator. State the functions of the components used.
d. provide classification of hydraulic actuators. discuss any 1 of them with neat sketch.
e. State advantages and limitations of hydraulic system.
f. Differentiate ranging from Hydraulic system and Pneumatic system.

Q.2 Attempt any 3 of the following:
12 Marks
a.
discuss 4-way 2-Position direction control valve used in hydraulic system with sketch
and symbol.
b.
Draw neat sketch and symbol of F-R-L unit used in pneumatic system. discuss the
function of this unit.
c.
Differentiate ranging from air motors and electric motors.
d.
provide classification of filters used in hydraulic system. discuss any 1 of them.
Q.3 Attempt any 3 of the following:
12 Marks
a.
State any 4 applications of pneumatic system.
b.
discuss with neat sketch the working of push button operated five x two DC valve used in
pneumatic.
c.
What is flow control valve? discuss non-pressure compensated flow control valve.
d.
discuss the working of piston pump with neat sketch.

Q.4 Attempt any 2 of the following:
16 Marks
a.
Draw neat circuit diagram for sequential hydraulic circuit. discuss its working.
b.
(1) The piston and double acting cylinder is having subsequent dimensions:
i.
OD of piston = 100mm
ii.
Stroke Length = 110mm
iii. Diameter of piston rod = 25mm
iv. time needed to complete the stroke is five seconds.
Then obtain out:
i.
Area of piston on blind side.
ii.
Area of piston on piston rod side.
iii. Linear velocity of piston.
(2) How seals are classified? discuss any 1 kind of seal with neat sketch.
c.
discuss pneumatic circuit for controlling the speed of double acting cylinder with
circuit diagram.
Q.5 Attempt any 3 of the following:
12 Marks
a.
List and discuss different kinds of air motors.
b.
(1) Draw symbol of double acting double rod end hydraulic cylinder and pressure
relief valve.
(2) which materials are used for layers of hoses in pneumatic system? Draw cross-
part of pneumatic hose pipe.
c.
discuss vane pump with neat sketch.
d.
Compare positive displacement pump and rotodynamic pump.
Q.6 Attempt any 3 of the following:
12 Marks
a.
discuss with symbol and sketch pilot operated poppet valve used in pneumatic circuit.
b.
List out the function of valves. Classify valves in pneumatic system.
c.
Why accumulators are used in hydraulic circuit? discuss any 1 kind of accumulator
with neat sketch.
d.
State the importance of the pump used in hydraulic system. provide its classification.


Earning:   Approval pending.