General Mechanical Engineering, Question Paper of B.Tech AE (D) 4th Semester, Download Previous Years Question Paper 3

Roll no. 

GENERAL MECHANICAL ENINEERING

4^th Exam/Auto/9308/May’10

Duration :03 Hrs.

Note : Attempt any five questions. Question no. 1 is compulsory.

1.       

a.     ___ spring is made up of wire coiled into a helix.

b.     Maximum B.M occurs when S.F _____

c.      Hooks law holds good up to ____

d.     The units of moment of inertia of a plane area is in _____

e.      _____ is a beam whose both ends are fixed

f.       The unit of section modulus is _____

g.     Torque produces __________ stress in the shaft

h.     Spring is used to absorb energy due to __

i.       In a kinematics chain, when one of its link is ____ it is called a mechanism.

j.       The governors are broadly classified as _____ governors and ___ governors.

2.       

a.     Explain the harmful effect of vibrations?

b.     What are the causes of vibrations?

3.      

a.     Differentiate between static and dynamic balancing?

b.     Explain balancing of single rotating mass by a single mass rotating in same plane?

4.        

a.     Explain the principle and working of porter governor?

b.     Compare fly wheel and governor.

5.       

a.     Define the following

                                                             i.      Shear force

                                                           ii.      Bending moment

                                                        iii.      Point of contra flexure

b.     A cantilever of length 4cm carries of uniformly distributed load of 3KN/m length over a whole length and a point load of 4kn at he free end. Draw the shear force and bending moment diagram

6.       

a.     What do you mean by radius of gyration?

b.     Find the moment of inertia of a retrungular section shown in fig. about the axis xx passing through centroiod G . Calculate radius of gyration and section modulus Z,xx also calculate moment of inertia about base

7.     An air drum is made of 10 mm thick plate. The diameter of shell is 3m. the efficiency of longitudinal and circumferential joints are 80% and 45 % respectively. If the tensile stress in the plate is limited to 100N/mm2, find the maximum safe air pressure

a.     Define the following

b.     Factor of safety

c.      Working stress