Miscellaneous Machine Elements MCQ - Set 01 - ObjectiveBooks
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# Practice Test: Question Set - 01

1. The wires in wire rope are subjected to
(A) Tensile stress
(B) Tensile and bending stresses
(C) Shear stress
(D) Crushing stress

2. A column made of ductile material is considered as long column when the slenderness ratio is
(A) More than 80
(B) Less than 80
(C) Less than 30
(D) More than 100

3. The dividing line between Euler’s equation and Johnson’s equation
(A) Pcr/A = Syt/2
(B) 1/k = 30
(C) 1/k = 80
(D) Pcr/A = 100

Where, Pcr, l, k, A and Syt are critical buckling load, length of column, least radius of gyration, cross-sectional area and yield strength respectively.

4. In design of piston rod as column, the end conditions are assumed as
(A) Ends are hinged in both planes
(B) Ends are hinged in one plane and fixed in perpendicular plane
(C) Ends are hinged in both planes
(D) Ends are free in one plane and hinged in perpendicular plane

5. The part of oil seal, which prevents leakage of fluid, is
(A) Casing
(B) Garter spring
(C) Lip
(D) None of the above

6. Wire rope makes contact at
(A) Bottom of groove of the pulley
(B) Sides of groove of the pulley
(C) Bottom and sides of groove of the pulley
(D) Any one of the above

7. Which equation is used for long columns?
(A) Euler’s equation
(B) Johnson’s equation
(C) Simple compressive stress equation
(D) Any one of the above

8. The buckling load depends upon
(A) Slenderness ratio
(B) Cross-sectional area
(C) Modulus of elasticity
(D) All of the above

9. Which equation is used for short columns?
(A) Euler’s equation
(B) Johnson’s equation
(C) Simple compressive stress equation
(D) Any one of the above

10. An oil seal is used
(A) To prevent leakage of fluid between two part in relative motion
(B) To prevent leakage of fluid between two stationary part
(C) To prevent leakage of fluid between cylinder and cylinder cover
(D) For none of the above

11. Which of the following wire ropes will be more wear resistant?
(A) 6 × 19
(B) 6 × 7
(C) 6 × 37
(D) Any one of the above

12. Slenderness ratio is the ratio of,
(A) Length of column to least moment of inertia of the cross-section about its axis
(B) Length of column to area of the cross-section
(C) Length of column to least radius of gyration of the cross-section about its axis
(D) None of these

13. The condition, which gives same value of buckling load by Euler’s equation and Johnson’s equation, is
(A) Pcr/A = Syt/2
(B) 1/k = 30
(C) 1/k = 80
(D) Pcr/A = 100

Where Pcr, l, k, A and Syt are critical buckling load, length of column, least radius of gyration, cross-sectional area and yield strength respectively.

14. Rubber compound that is used for sealing lip is
(A) Nitrile compound
(B) Silicon compound
(C) Fluoro elastomer compound
(D) Any one of the above

15. Compared with solid section, hollow section column has
(A) High buckling strength
(B) Low buckling strength
(C) Same buckling strength
(D) None of the above

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