Shafts & Keys Multiple Choice Questions and Answers - Set 02 - ObjectiveBooks

Shafts & Keys Multiple Choice Questions and Answers - Set 02

Practice Test: Question Set - 02


1. The keyway,
    (A) Reduces strength of shaft
    (B) Reduces rigidity of shaft
    (C) Increases stress concentration
    (D) All of above

2. While designing a flange coupling, care is taken so that
    (A) Shaft is the weakest component
    (B) Bolts are the weakest component
    (C) Key is the weakest component
    (D) The flange is the weakest component

3. Two shafts A and B are made of same material. The diameter of shaft A is twice that of B. The torque transmitted by shaft A will be
    (A) Twice that of B
    (B) Four times that of B
    (C) Eight times that of B
    (D) Sixteen times that of B

4. Maximum shear stress theory is used for
    (A) Cast iron shafts
    (B) Steel shafts
    (C) Flexible shafts
    (D) Plastic shafts

5. The key in the form of semi-circular disk of uniform thickness is called,
    (A) Sunk key
    (B) Feather key
    (C) Woodruff key
    (D) Kennedy key

6. Splines are commonly used in
    (A) Machine tool gear box
    (B) Automobile gear box
    (C) Hoist and crane gear box
    (D) Bicycle

7. In case of clamp coupling, power is transmitted by means of,
    (A) Friction force
    (B) Shear resistance
    (C) Crushing resistance
    (D) None of the above

8. The angle of twist for a transmission shaft is inversely proportional to
    (A) Shaft diameter
    (B) (Shaft diameter)2
    (C) (Shaft diameter)3
    (D) (Shaft diameter)4

9. In case of sunk key,
    (A) The keyway is cut in the shaft only
    (B) The keyway is cut in the hub only
    (C) The keyway is cut in both the shaft and the hub
    (D) None of the above

10. The compressive stress induced in a square key is,
    (A) Equal to shear stress
    (B) Four times of shear stress
    (C) Twice of shear stress
    (D) Half of shear stress

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