# 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)

*P*

_{cr}/

*A*=

*S*

_{yt}/2

- (B) 1/

*k*= 30

- (C) 1/

*k*= 80

- (D)

*P*

_{cr}/

*A*= 100

Where, *P*_{cr}, *l*, *k*, *A* and *S*_{yt} 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)

*P*

_{cr}/

*A*=

*S*

_{yt}/2

- (B) 1/

*k*= 30

- (C) 1/

*k*= 80

- (D)

*P*

_{cr}/

*A*= 100

Where *P*_{cr}, *l*, *k*, *A* and *S*_{yt} 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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