Machine design: Quick recap(questions)

  • A butt weld joint is developed on steel plates having yield and ultimate tensile strength of 500 MPa and 700 MPa, respectively. The thickness of the plates is 8 mm and width is 20 mm. Improper selection of welding parameters caused an undercut of 3 mm depth along the weld. The maximum transverse tensile load (in kN) carrying capacity of the developed weld joint is?
  • A metric thread of pitch 2 rnrn and thread angle 60 degree is inspected for its pitch diameter using 3 wire method. The diameter of the best size wire in mm  is 
           (a) 0.866  (b) 1.000  (c)1.154  (d)2.000

2. (c)