Maharashtra State Board of Technical Education 6th semester Diploma in Engineering pa

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Maharashtra State Board of Technical Education 6th semester Diploma in Engineering papers

1. Attempt any FIVE of the following: 20
a) What is globalization? State advantages and disadvantages.
b) Differentiate between administration and management.
c) Define organization. State the steps in forming organization.
d) State and explain type of leadership.
e) State the functions of financial management.
f) State the objectives of inventory management.
g) Define Quality. Explain the concept of quality circle.
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2. Attempt any FOUR of the following: 16
a) What are the various levels of management?
b) Explain the scientific management.
c) What is Departmentation? State its advantages.
d) Explain Maslow’s theory of motivation.
e) State various types of taxes. Explain any one.
f) What is enterprize resource planning? State its importance in
material handling.
3. Attempt any FOUR of the following: 16
a) Enlist principles of Henry Fayol Management.
b) State importance of planning as a function of management.
c) Explain span of control with its factors.
d) List four advantages of co-operative society.
e) State the causes of accident.
f) Explain workmen compensation act.
4. Attempt any FOUR of the following: 16
a) State the functions of personal department.
b) Explain the procedure to be followed for recruitment of
engineering supervisor.
c) What is balance sheet?
d) List sources of raising working capital.
e) What is ABC analysis in inventory control?
f) Define the following terms:
(i) Just in time (JIT)
(ii) System application and product (SAP)
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5. Attempt any FOUR of the following: 16
a) State the provisions of ESI act.
b) Differentiate between fixed capital and working capital by giving
suitable example.
c) Explain custom duty.
d) What do you mean by budget? State objective of budget control.
e) Explain all steps in purchase procedure.
f) What are the factors considered in calculating economic order
quantity?
6. Attempt any FOUR of the following: 16
a) Explain the following function of management:
(i) Controlling
(ii) Decision Making
b) Differentiate between authority and responsibility.
c) Explain functions of purchase management.
d) Explain the following term:
(i) Kaizen
(ii) Six sigma
e) Explain the term ‘Break Even Point’ with the help of break
even chart, explain its importance to the management.
f) What is quality circle and quality assurance?

1. Attempt any FIVE of the following: 20
a) Draw stress-strain diagram for ductile and brittle materials.
Name the various points on the diagrams.
b) Explain the following stresses:
(i) Transverse shear stress
(ii) Bending stress
c) State the types of thread profile used for power
transmission. Draw neat sketch of any two.
d) Explain with neat sketch the bolt of uniform strength.
e) State the various theories of elastic failure. Explain
maximum distortion energy theory.
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f) Define the terms:
(i) Aesthetics
(ii) Ergonomics
g) What is the effect of key on the strength of shaft?
2. Attempt any FOUR of the following: 16
a) What are the steps involved in general design procedure?
Explain in brief.
b) What is stress concentration? Illustrate methods to reduce it
with sketches.
c) Write any four strength equations in the design of cotter
joint with relevant sketches.
d) Explain :
(i) self locking of screw
(ii) over hauling of screw
e) State the applications of the following bearings with suitable
reasons
(i) Deep groove ball bearing
(ii) Taper roller bearing
(iii) Thrust roller bearing
(iv) Needle roller bearing.
f) Write down classification of coupling and draw sketch of
one coupling.
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3. Attempt any TWO of the following: 16
a) Draw a neat sketch of turn buckle and write the design
procedure.
b) A mild steel shaft transmits 20 Kw at 200 rpm. It carries a
central load of 900 N and is simply supported on bearings
2.5 metres apart. Determine the size of the shaft, if the
allowable shear stress is 42 MPa and maximum tensile or
compressive stress is not to exceed 56 MPa.
c) The lead screw of a lathe has Acme threads of 50 mm
outside diameter and 8 mm pitch. The screw must exert an
axial pressure of 2500 N in order to drive the tool carriage.
The thrust is carried on a collar 110 mm outside diameter
and 55 mm inside diameter and lead screw rotates at
30 rpm. Determine.
(i) the power required to drive the screw
(ii) efficiency of the lead screw
Assume = 0.15 for screw
= 0.12 for collar
4. Attempt any FOUR of the following: 16
a) What are the advantages of square thread profile? Draw a
thread profile used in power screw.
b) Write lewis equation for the strength of gear tooth. Explain
the meaning of each term.
P.T.O.
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c) State significance of Wahl’s correction factor used in
springs.
d) Give examples where screwed joints are preferred over
welded joints.
e) What is the procedure for selection of bearings from the
manufacturer’s catalogue?
5. Attempt any TWO of the following: 16
a) The spindle of a drilling machine as shown in Fig. No. 1
is subjected to a maximum axial load of 10kN during
operation. Determine the diameter of the solid cast iron
column if the permissible tensile stress is 40 N/mm2. The
distance between the axis of the spindle and the axis of the
column is 350 mm.
Fig. No. 1
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b) Design a close coiled helical compression spring for a
service load ranging from 2250 N to 2750 N. The axial
deflection of the spring for the load range is 6 mm.
Assume spring index of 5. The permissible shear
stress intensity is 420 MPa and modulus of rigidity
G=84 kN/mm2. Neglect effect of stress concentration.
c) A cylinder head of steam engine is held in position by
M20 bolts. The effective diameter of the cylinder is
350 mm and steam pressure is 0.75 N/mm2. If bolts are
not initially stressed find the number of bolts required.
Take working stress for the bolt material is 20N/mm2.
6. Attempt any FOUR of the following: 16
a) State the following material specifications
(i) FeE 230
(ii) FG 200
(iii) 35C8
(iv) X 20 Cr18 Ni2
b) Explain with neat sketch, what are the modes of failure in
the kunckle pin?
c) Explain with neat sketch constructional details of leaf
spring. State any two applications.
P.T.O.
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d) A plate 75 mm wide and 12.5 mm thick is joined with
another plate by a single transverse, double parallel fillet
weld. The maximum tensile and shear stress are 70N/mm2
and 56 N/mm2 respectively. Find the length of each parallel
fillet weld if joint is subjected to 90 kN.
e) For a square key equally strong in shearing and crushing
show that permissible crushing stress is twice the shear
stress.