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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