## General Mechanical Engineering, Question Paper of B.Tech AE (D) 4th Semester, Download Previous Years Question Paper 4

• Thursday, November 03, 2016
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Roll no.
GENERAL MECHANICAL ENINEERING
4th Exam/Auto/9308/Dec’10
Duration :03 Hrs.
Note : Attempt any five questions. Question no. 1 is compulsory.
1.     Fill in the blanks
a.     The ratio of lateral strain to linear strain is known as ___
b.     Factor of safety = ____
c.      A beam supported on more than two supports is known as _---
d.     The negative B.M is also known as ____
e.      The unit of M.O.I is _____
f.       The bending stress on the neutral axis if ____
g.     In case of a cantilever tensile stress are induced _____ the neutral axis.
h.     Maximum bending stress in a beam is at the ____ fibers.
i.       The circumferential stress in as ___ the longitudinal stress.
j.       Torque produces _____ stress in the shaft.
2.
a.     Explain the terms:- young’s Modulus, Passion ratio, Modulus of rigidity and Hooke’s law.
b.     A rod 20mm in diameter &   2m long is subjected to an axial pull of  35KN. If the young modulus of elasticity of the material of the rod  is 210GN/M,
i.      Stress
ii.      Strain.
iii.      Elongation of the rod.
3.
a.     Write assumption used in bending in beams
b.     A rectangular beam 300mm deep & 150 mm wide is simply supported over a span of 8m find the max. U.D.L that the beam can carry, if the bending stress is not to exceed 120N/mm2.
4.
a.     Explain the sign convention used in B.M
b.     Draw the S.F & B.M diagram for the beam shown in fig.

5.
a.     Write assumption used in tensional equation and define tensional rigidity.
b.     A solid shaft of 100mm diameter is to transmit 160KW at 100  rpm find the angle of twist for a length of 6m if the max. torque exceeds the mean by 40% take C = 8X10 N/mm2
6.
a.     Write difference between wheel and governor
b.     What do you mean by higher pair & lower pair. Write example of each.
c.      What are the causes of vibration.
7.     Explain any three of the followings:
a.     Static balancing.
b.     Inversion of mechanism
c.      Helical springs.

d.     Laminated springs.