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Mechanical Engineering Objective Questions { Machine Design }



92. The edges of the plates for cylindrical vessels are usually bevelled to an angle of 80 for
A.Reducing stress concentration
B.Ease of manufacture
C.Safety
D.Fullering and caulking

93. The piston rod of a steam engine is usually connected to the cross-head by means of
A.Bolted joint
B.Knuckle joint
C.Cotter joint
D.Universal joint

94. Which of the following pipe joints would be suitable for pipes carrying steam
A.Flanged
B.Threaded
C.Bell and spigot
D.Expansion

95. Spring index is
A.Ratio of coil diameter to wire diameter
B.Load required to produce unit deflection
C.Its capability of storing energy
D.Indication of quality of spring

96. The shearing stresses in the inner face as compared to outer face of the wire in a heavy close coiled spring is
A.Larger
B.Smaller
C.Equal
D.Larger/smaller depending on diameter of spring coil

97. Form coefficient of spring is
A.Ratio of coil diameter to wire diameter
B.Load required to produce unit deflection
C.Its capability of storing energy
D.Concerned with strength of wire of spring

98. Spring stiffness is
A.Ratio of coil diameter to wire diameter
B.Load required to produce unit deflection
C.Its capability of storing energy
D.Its ability to absorb shocks

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