A Best Way To Crack Gorenment Job Exams

Mechanical Engineering Objective Questions { Machine Design }



113. In cross or regular lay ropes
A.Direction of twist of wires in strands is opposite to the direction of twist of strands
B.Direction of twist of wires and strands are same
C.Wires in two adjacent strands are twisted in opposite direction
D.Wires are not twisted

114. In standard taper roller bearings, the angle of taper of outer raceway is
A.5
B.8
C.15
D.25

115. Ball bearing type screws find application in
A.Vices
B.Steering mechanism
C.Earth-moving machinery
D.Feed mechanisms

116. The connecting rod bolts are tightened up so that tightening stress
A.Is just sufficient to hold parts together
B.Approaches yield point
C.Is 50% of yield point
D.Is about yield point divided by safety factor

117. The connecting rod bolts are tightened up with initial tension greater than the external load so that
A.Joint may not open up
B.Bolts are weakest elements
C.The resultant load on the bolt would not be affected by the external cyclic load
D.Bolts will not loosen during service

118. If an application calls for stresses on screw threads in one direction only, then the following type of thread would be best suited
A.Square
B.Acme
C.Buttress
D.B SW

119. When a bolt is subjected to shock loading, the resilience of the bolt should be considered in order to prevent breakage at
A.Shank
B.Head
C.In the middle
D.At the thread

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