Top 550+ Solved Machine Design MCQ Questions Answer
Q. Which of the following equipment operates at higher speeds as compared to the remaining?
a. Steam turbines
b. Automobiles
c. Diesel engines
d. Machine tools
e. Fram machinery
Q. Flexible shafts are made of
a. thin mild steel rod
b. Increasing the diameter of threaded portion
c. hollow mild steel rod
d. wavy steel wires
Q. An automobile gear box has
a. Simple gear train
b. Compound gear train
c. Epicycle gear train
d. Compound epicyclic gear train
e. None of the above
Q. Rivets are
a. Heated before inserting in position
b. Heated after inserting in position
c. Not heated at all
d. Cold forged
e. None of the above
Q. A starter in automobile is generally
a. Single phase c.motor
b. dc shunt motor
c. dc series motor
d. dc compound motor
e. None of the above
Q. The holding power of sunk key is due to the resistance it differs in
a. shear and crushing
b. Cast steel
c. crushing only
d. tension only
e. shear only
Q. Screw parts with a right hand thread must only be stressed
a. In the direction of screwing in
b. In the direction of screwing out
c. In the direction normal to the screw axis
d. In the shear plane
e. In the plane of principal axis
Q. Resilience of material should be considered when it is subjected to
a. Fluctuating load
b. Wear and tear
c. Shock loading
d. Any of the above
e. None of the above
Q. Which of the following drive cannot be used for driving cam shaft of a four stroke intemal cambustion engine?
a. Spur gear drive
b. Helical gear drive
c. Chain drive
d. V-belt drive
e. None of the above
Q. In an open belt-pulley drive the bodily slip occurs
a. first at larger pulley
b. first at smaller pulley
c. simultaneously on both the pulleys
d. none of the above
e. Cast steel
Q. Maximum principal stress theory for the failure of a material at elastic point, is knowns as
a. Von Mises theory
b. Rankines theory
c. Haig's theory
d. Guest's or Tresca's theory
e. Increasing the diameter of threaded portion
Q. The maximum thickness of the plates used in pressed steel tanks is
a. Increasing the diameter of threaded portion
b. 3 mm
c. 5 mm
d. 6 mm
e. 4 mm
Q. The minor-diameter cross-section of the portion of the screw between the nut and the thrust bearing is subjected to
a. Tension
b. Compression
c. Shear
d. Torque
e. Biaxial stress
Q. In case of rolled steel beams, the chear force is resisted by
a. Increasing the diameter of threaded portion
b. flanges only
c. web only
d. web and flanges together
e. top flange only