The angle through which a gear turns from the beginning of contact of a pair of teeth until the contact reaches the pitch point, is known as
A.Pressure angle
B.Angle of contact
C.Angle of approach
D.Approach angle
E.Angle of action
Category: Machine Design Mcqs
In a ball bearing a ball is subjected to
A.Compressive stress
B.Tensile stress
C.Shear stress
D.Cyclic stress or fatigue
E.None of the above
The crest diameter of a screw thread is same as
A.Pitch diameter
B.Core diameter
C.Minor diameter
D.Major diameter
E.Pitch diameter
A pivoted segment type thrust bearing is used in order to provide
A.Uniform velocity
B.Balanced lead
C.Uniform wear
D.Uniform frictional forces
E.A converging film of oil
The pressure angle an involute gear profile gear
A.Changes with position
B.Depends on speed of operation
C.Depends on gear pitch and clearance
D.Remains constant
E.None of the above
Allen bolts are
A.Self locking bolts
B.Self-screwing bolts
C.Used on aircraft
D.Provided with hexagonal depression in head
E.Counter sunk
For butt welding of two plates each of which is 25 mm thick, the best process would be
A.Gas welding
B.Submerged are welding
C.TIG welding
D.MIG welding
E.Electron slag welding
In a tap set, the first tap used in thread cutting is
A.Bottom tap
B.Plug tap
C.Straight tap
D.Taper tap
E.Any one
A Babbitt is
A.A eutcctic of iron and iron phosphide
B.A gadget for measuring volume
C.A measure of magnetic induction produced in a material
D.Antimony bearing lead or tia alloy
E.None of the above
The surface endurance limit of gear material is dependent on its
A.Elastic strength
B.Coefficient of friction
C.Surface lubrication
D.Surface hardness
E.Toughness
