1. When a bolt is subjected to an external load, the stress induced in the bolt will be ?

tensile stress

shear stress

combined tensile and shear stress

any one of these

Answer: any one of these

Explanation:


2. The pipe joint mostly used for pipes carrying water at low pressures is ?

socket joint

nipple joint

union joint

spigot and socket joint

Answer: socket joint

Explanation:


3. Two shafts will have equal strength, if ?

diameter of both the shafts is same

angle of twist of both the shafts is same

material of both the shafts is same

twisting moment of both the shafts is same

Answer: twisting moment of both the shafts is same

Explanation:


4. The acme threads are usually found on ?

spindles of bench vices

railway carriage couplings

feed mechanism of machine tools

screw cutting lathes

Answer: screw cutting lathes

Explanation:


5. The washer is generally specified by its ?

outer diameter

hole diameter

thickness

mean diameter

Answer: hole diameter

Explanation:


6. The process which improves the machinability of steels, but lowers the hardness and tensile strength is ?

normalising

full annealing

process annealing

spheroidising

Answer: spheroidising

Explanation:


7. Which of following statement is correct, for the two shafts connected in parallel ?

Torque in each shaft is the same

Shear stress in each shaft is the same

Angle of twist of each shaft is the same

Torsional stiffness of each shaft is the same

Answer: Angle of twist of each shaft is the same

Explanation:


8. For a square key made of mild steel, the shear and crushing strength are related as ?

shear strength is equal to crushing strength

shear strength is greater than crushing strength

shear strength is less than crushing strength

none of the above

Answer: shear strength is equal to crushing strength

Explanation:


9. A double strap butt joint (with equal straps) is ?

always in single shear

always in double shear

either in single shear or double shear

any one of these

Answer: always in double shear

Explanation:


10. In a steam engine, the valve rod is connected to an eccentric rod by means of ?

cotter joint

knuckle joint

universal joint

flange coupling

Answer: knuckle joint

Explanation: