The endurance limit in shear of carbon steel can be obtained by multiplying the endurance limit in flexure by a factor of____________?
(A) 0.25
(B) 0.45
(C) 0.55
(D) 0.65
(D) 0.75
A 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 to be joined
(C) has both the ends threaded
(D) is provided with pointed threads
(D) requires no nut
If d is the diameter of bolt hole then for a flanged pipe joint to be leak proof, the circumferential pitch of the bolts should be_________________?
(A) lOVZ
(B) 10VZtol5Vd
(C) 15Vdto20VZ
(D) 20Vdto30Vd
(D) 30V5″to40Vd
The following type of nut is used with alien bolt____________________?
(A) alien nut
(B) hexagonal nut
(C) slotted nut
(D) castle nut
(D) any one of the above
Shear stress theory is applicable for____________________?
(A) ductile fnaterials
(B) brittle materials
(C) elastic materials
(D) all of the above
(D) none of the above
For applications involving high stresses in one direction only the following type of thread would be best suited______________________?
(A) ISO metric thread
(B) acme thread
(C) square thread
(D) buttress thread
(D) British Association thread
The function of a washer is to___________________?
(A) provide cushioning effect
(B) provide bearing area
(C) absorb shocks and vibrations
(D) provide smooth surface in place of rough surface
(D) act as a locking device
Ball bearing type screws are found in following application_____________________?
(A) screw jack
(B) aeroplane engines
(C) crane
(D) steering mechanism
(D) bench vice
If d is the normal diameter of a bolt in mm, then the initial tension in kg in a bolt used for making a fluid tight joint as for steam engine cover joint is calculated by the relation_______________?
(A) 102 d
(B) 124 d
(C) 138 d
(D) 151 d
(D) 168 d
Eye bolts are used for_________________?
(A) foundation purposes
(B) locking devices *
(C) absorbing shock and vibrations
(D) transmission of power
(D) lifting and transportation of machines and cubicles