Machine Design Quiz Questions and Answers - Set 36

Practice Test: Question Set - 36


1. The buckling load will be maximum for a column, if
    (A) One end of the column is clamped and the other end is free
    (B) Both ends of the column are clamped
    (C) Both ends of the column are hinged
    (D) One end of the column is hinged and the other end is free

2. A flanged pipe joint will be a leak-proof joint, if the circumferential pitch of the bolts is (where d = Diameter of bolt hole)
    (A) Less than 20d
    (B) Greater than 30d
    (C) Between 20d and 30d
    (D) Equal to inside diameter of pipe

3. Which of the following is an anti-friction bearing?
    (A) Journal bearing
    (B) Pedestal bearing
    (C) Collar bearing
    (D) Needle bearing

4. For low and moderate speed engines, the cam follower should move with
    (A) Uniform velocity
    (B) Simple harmonic motion
    (C) Uniform acceleration and retardation
    (D) Cycloidal motion

5. The diameter of the rivet hole is usually __________ the nominal diameter of the rivet.
    (A) Equal to
    (B) Less than
    (C) More than
    (D) None of these

6. When a machine member is subjected to torsion, the torsional shear stress set up in the member is
    (A) Zero at both the centroidal axis and outer surface of the member
    (B) Maximum at both the centroidal axis and outer surface of the member
    (C) Zero at the centroidal axis and maximum at the outer surface of the member
    (D) Maximum at the centroidal axis and zero at the outer surface of the member

7. The root angle of a bevel gear is equal to
    (A) Pitch angle - addendum angle
    (B) Pitch angle + addendum angle
    (C) Pitch angle - dedendum angle
    (D) Pitch angle + dedendum angle

8. Which of the following statement is wrong?
    (A) The solid length of a spring is the product of total number of coils and the diameter of the wire
    (B) The spring index is the ratio of mean diameter of the coil to the diameter of the wire
    (C) The spring stiffness is the load required per unit deflection of the spring
    (D) The pitch of the coil is the axial distance between adjacent coils in the compressed state

9. Which of the following bearing is preferred for oscillating conditions?
    (A) Double row roller bearing
    (B) Taper roller bearing
    (C) Angular contact single row ball bearing
    (D) Needle roller bearing

10. The usual proportion for the width of key is (where d = Diameter of shaft or diameter of hole in the hub)
    (A) d/8
    (B) d/6
    (C) d/4
    (D) d/2

11. A hollow shaft will transmit a __________ torque than a solid shaft of the same mass and same material.
    (A) Smaller
    (B) Greater
    (C) Medium
    (D) None of these

12. The groove angle of the pulley for rope drive is usually
    (A) 20°
    (B) 35°
    (C) 45°
    (D) 60°

13. The diameter of knuckle pin in a knuckle joint is usually taken as (where d = Diameter of the rod)
    (A) 0.5 d
    (B) 0.8 d
    (C) d
    (D) 1.2 d

14. The centrifugal tension in the belt
    (A) Increases the power transmitted
    (B) Decreases the power transmitted
    (C) Has no effect on the power transmitted
    (D) Is equal to maximum tension on the belt

15. A woodruff key is
    (A) A tapered key with head at one end
    (B) Fitted in pairs at right angles
    (C) Capable of tilting in a recess milled out in the shaft
    (D) All of the above

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