Miscellaneous Machine Elements Online Test - Set 02 - ObjectiveBooks

Practice Test: Question Set - 02

1. Wire rope are used in applications with
(A) Low speed and low tension
(B) Low speed and high tension
(C) High speed and high tension
(D) High speed and low tension

2. Euler’s equation is valid if
(A) Pcr/A < Syt/2
(B) Pcr/A > Syt/2
(C) Pcr/A = Syt/2
(D) Pcr/A = 100

Where Pcr, A and Syt are critical buckling load, cross-sectional area and yield strength respectively.

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

4. When the wire rope passes around the sheave or drum, the stress is maximum
(A) In outer wires
(B) In inner wires
(C) In central wires
(D) None of the above

5. In 6 × 19 designation of wire rope, the numbers 6 and 19 respectively for
(A) Number of strands and diameter of wire rope
(B) Diameter and length of wire rope
(C) Number of strands and number of wires in each strand
(D) Thickness and width of cross-section of wire rope

6. A machine component is designed as a column when it is subjected to,
(A) Axial tensile force
(B) Bending moment
(C) Axial compressive force
(D) Torsional moment

7. Compression member tends to buckle in the direction of
(B) Any direction in a plane perpendicular to axis of load
(C) Least radius of gyration in a plane perpendicular to axis of load
(D) None of the above

8. Simple compression formula is valid for slenderness ratio
(A) More than 30
(B) Less than 30
(C) Equal to 30
(D) More than 40

9. A column made of brittle 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

10. Johnson’s equation is valid if
(A) Pcr/A < Syt/2
(B) Pcr/A > Syt/2
(C) Pcr/A = Syt/2
(D) Pcr/A = 100

Where, Pcr, A and Syt are critical buckling load, cross-sectional area and yield strength respectively.

11. Popular lay for wire rope is
(A) Regular lay
(B) Lang’s lay
(C) Any one of the above
(D) None of the above

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