The deflection of a cantilever beam under load W is 8. If its width is halved, then the deflection under load W will be________________?
(A) 28
(B) 8/2
(C) 48
(D) 8/4
(D) none of the above
Cap screws are___________________?
(A) similar to’small size tap bolts except that a greater variety of shapes of heads are available
(B) slotted for a screw driver and generally used with a nut
(C) used to prevent relative motion be-tween parts
(D) provided with detachable caps
(D) similar to stud
The included angle in unified of American National threads is___________________?
(A) 60°
(B) 55°
(C) 47°
(D) 29°
(D) none of the above
A tap bolt_____________________?
(A) has a head on one end and a nut fitted to the other
(B) has head at one end and other end fits into a tapped hole in the other part o be joined
(C) has both the ends threaded
(D) has pointed threads
(D) requires locking devices
A stud________________________?
(A) has a head on one end and a nut fitted to the other
(B) has head at one end and other end fits into a tapped hole in the other part to be joined
(C) has both the ends threaded
(D) has pointed threads
(D) requires locking nuts
Maximum principal stress theory is applicable for_____________________?
(A) ductile materials
(B) brittle materials
(C) elastic materials
(D) all of the above
(D) none of the above
The crest diameter of a screw thread is same as _____________________?
(A) major diameter
(B) minor diameter
(C) pitch diameter
(D) core diameter
(D) none of the above
At low temperatures (say 75°C) the notched-bar impact value of steel____________________?
(A) increases markedly
(B) decreases markedly
(C) remains same
(D) depends on heat treatment carried out
(D) none of the above
A self locking screw has________________>
(A) fine threads
(B) coarse threads
(C) coefficient of friction > tangent of load angle
(D) hole for inserting split pin
(D) two nuts for locking
Which is correct statement ?
(A) a member made of steel will generally be more rigid than a member of equal load-carrying ability made of cast iron
(B) a member made of cast iron will generally be. more rigid than a member of equal load carrying ability made of steel
(C) both will be equally rigid
(D) which one is rigid will depend on several other factors
(D) none of the above