The pin supporting the exhaust iever of an internal combustion engine is subjected to a shear load of 400 kg/sq-cm the diameter of the pin should be
A.1 cm
B.1.5 cm
C.2 cm
D.4 cm
E.6 cm
Category: Machine Design Mcqs
Steel balls for ball bearings are manufactured by
A.Turning
B.Casting
C.Rolling
D.Cold heading
E.Pressing
Approximate horse power that can be transmitted by a shaft 60 mm diameter at 180 r.p.m. with permissible shear stress of 850 kg/cm2, would be
A.30-35
B.35-50
C.50-65
D.65-85
E.85-95
In a gas turbine rotor a radial stress of 300 kg/sq cm tensile and 500 kg/sq cm tangential stress have been found at a point. The maximum shear stress at this point would be
A.750 kg/sq-cm
B.500 kg/cm2
C.300 kg/cm2
D.250 kg/cm2
E.595 kg/cm2
In V-belt drive the belt touches
A.At bottom
B.At sides only
C.Both at bottom as well as sides
D.Anywhere
E.None of the above
A bushed pin flexible type coupling is used to join two shafts which
A.Are not in exact alignment
B.Are not coplanar
C.Change position during operation
D.Are inclined
E.None of the above
The minor-diameter cross-section of the portion of the screw between the nut and the thrust bearing is subjected to
A.Compression
B.Tension
C.Shear
D.Torque
E.Biaxial stress
The column which has the highest equivalent length has
A.Both ends fixed
B.One end fixed and other end free
C.Both ends hinged and pin joined
D.One end fixed and other end hinged
E.None of the above
The pitch of 24 mm diameter metric threads would be
A.1 mm
B.2 mm
C.3 mm
D.5 mm
E.6 mm
