Practice Test: Question Set - 01
1. A transmission shaft subjected to pure bending moment should be designed on the basis of
- (A) Maximum
principal stress theory
- (B) Maximum
shear stress theory
- (C) Distortion
energy theory
- (D) Goodman
or Soderberg diagrams
2. A transmission shaft is subjected to bending moment (Mb) and torsional moment (Mt). The equivalent torsional moment is given by,
- (A) √(Mb + Mt)
- (B) √(Mb2 + Mt2)
- (C) Mb + Mt
- (D) Mb +√(Mb2 + Mt2)
3. The standard height for flat key in terms of shaft diameter (D) is,
- (A) d
- (B) d/2
- (C) d/4
- (D) d/6
4. Kennedy key is used in
- (A) Light
duty applications
- (B) Heavy
duty applications
- (C) High
speed applications
- (D) Precision
equipments
5. A bushed-pin type flange coupling is used
- (A) For
intersecting shafts
- (B) When
the shafts are not in exact alignment
- (C) For
small shafts rotating at slow speeds
- (D) For
parallel shafts
6. Two shafts A and B are made of same material. The diameters of shaft A and B are dA and dB respectively. The ratio of torque transmitted by shaft A to that of shaft B will be
- (A) dA/dB
- (B) (dA/dB)2
- (C) (dA/dB)3
- (D) (dA/dB)4
7. A transmission shaft is subjected to bending moment (Mb) and torsional moment (Mt). The equivalent bending moment is given by,
- (A) √(Mb + Mt)
- (B) √(Mb2 + Mt2)
- (C) Mb + Mt
- (D) Mb +√(Mb2 + Mt2)
8. The standard length for square or flat key in terms of shaft diameter (D) is,
- (A) d
- (B) 2d
- (C) 1.5d
- (D) 2.5d
9. The key, which fits in the keyway of hub, only is called,
- (A) Saddle
key
- (B) Feather key
- (C) Woodruff key
- (D) Kennedy key
10. Splines are used if,
- (A) The
power to be transmitted is high
- (B) The
torque to be transmitted is high
- (C) The
speed is high
- (D) There
is relative motion between shaft and hub
11. The shafts will have same strength on the basis of torsional rigidity, if
- (A) Diameter
and length of both shafts is same
- (B) Material
of both shafts is same
- (C) Angle
of twist for both shafts is same
- (D) All
of above conditions are satisfied
12. Maximum principle stress theory is used for
- (A) Cast
iron shafts
- (B) Steel
shafts
- (C) Aluminum
shafts
- (D) Plastic
shafts
13. The type of key used when the gear is required to slide on the shaft is
- (A) Sunk
key
- (B) Feather key
- (C) Woodruff
key
- (D) Kennedy key
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