Top 550+ Solved Machine Design MCQ Questions Answer
Q. Treads in tyres are provided to
a. increase tyre grip on the road
b. prevent skidding on dusty roads
c. prevent skidding on wet roads
d. none of the above
e. Cast steel
Q. An eye bolt is generally provided on
a. Machine tools
b. Cranes
c. Electric motors
d. Automobiles
e. Furnaces
Q. Which cam profile is preferred for minimum jerks?
a. Flat
b. Involute
c. Cycloidal
d. Simple harmonic
e. Any of the above
Q. For a transverse load on a fillet weld of equal legs, the plane of maximum shear force occurs at
a. 72?
b. 75?
c. 45?
d. 30?
e. 67
Q. The function of a washer is
a. To fill the axial gas
b. To provide cushioning effect
c. To absorb shocks and vibrations
d. To provide bearing area
e. None of the above
Q. When it is desired to transmit a high velocity ratio in a limited space, the device used is
a. Worm and worm wheel
b. Bevel gears
c. Helical gears
d. Noone of the above
e. None of the above
Q. Automobile gears are generally made of
a. carbon chrome manganese steel
b. Phosphor bronze
c. Grade 30 cast iron
d. Malleable cast iron
e. Any of the above
Q. The allowable stresses for the design of steel tanks are adopted
a. 80 percent reduced as given in IS : 800
b. 95 percent reduced as given in IS : 800
c. 50 percent reduced as given in IS : 800
d. Increasing the diameter of threaded portion
e. as given in IS : 800
Q. In a steam engine, the valve rod is connected to an eccentric rod by means of
a. universal joint
b. flange coupling
c. cotter joint
d. knuckle joint
e. Increasing the diameter of threaded portion
Q. While designing a shaft, hub and a key, care is taken so that
a. Key is the weakest component
b. Shaft is the stronger component
c. Key is the strongest component
d. Shaft is the weakest component
e. Hub is the strongest component
Q. If the shearing stress in a nut is equal to half the tensile stress in a bolt then the length of nut should be equal to
a. Diameter of the bolt
b. 1.50 times diameter of the bolt
c. 1.25 times diameter of the bolt
d. 0.75 times the diameter of the bolt
e. 0.5 times diameter of the bolt
Q. An out-of-plane web distribution is known as
a. column buckling
b. web buckling
c. vertical web buckling
d. any of the above
e. Increasing the diameter of threaded portion
Q. Battens in compound steel columns are provided to
a. increase the column capacity
b. ensure unified behaviour
c. prevent buckling
d. Increasing the diameter of threaded portion
e. decrease the buckling in members
Q. The stability of a structure is ensured if the restoring moment is
a. equal to
c. greater than
d. Increasing the diameter of threaded portion
e. smaller than
Q. The bending moment at a plastic hinge is
a. equal to zero
b. equal to plastic moment of the section
c. Increasing the diameter of threaded portion
d. equal to yield moment of the section
e. greater than plastic moment of the section