Machine Design
5 Questions
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Questions and Answers
- 1.For shafting, alloy steel is for high strength requirements, what material to be used for commercial purposes.
- A.
Stainless steel
- B.
Mild steel
- C.
Carbon steel
- D.
Nickel steel
- 2.A hollow shaft must carry a torque of 3,400,000 N-mm at a shearing stress of 55 Mpa. The inside diameter is to be 0.65Do. Find the outside diameter?
- A.
82 mm
- B.
75 mm
- C.
76 mm
- D.
73 mm
- 3.The torsional deflection of SAE 1040 steel shaft is 0.8 deg. in a length of 500 mm. The shear stress is 69 Mpa. Compute the diameter of the shaft if the steel modulus of elasticity is 79,300 Mpa.
- A.
51
- B.
75
- C.
62
- D.
50
- 4.A vertical load of 400N acts at the end of a horizontal rectangular cantilever beam 2-m long and 25-m. If the allowable bending stress is 130,000 kPa, find the depth of the beam?
- A.
34.83 mm
- B.
40.4 mm
- C.
38.43 mm
- D.
39.44 mm
- 5.
- A.
Shear stress
- B.
Tensile stress
- C.
Bending stress
- D.
Compressive stress
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