# The homogenous state of stress for a metal part undergoing plastic deformation is where the stress component values are in MPa. Using von mises yield criterion, the value of estimated shear yield stress, in Mpa is

1.  9.50

2.  16.07

3.  28.52

4.  49.41

4

16.07

Explanation :
No Explanation available for this question

# Details pertaining to an orthogonal metal cutting process are given below: Chip thickness ratio           0.4 Rake angle                       0.6mm Cutting speed                2.5m/s Mean thickness of primaty shear zone            25 microns The shear strain rate in s-1 during the process is

1.  0.178x105

2.  0.7754x105

3.  1.0104x105

4.  4.397x105

4

1.0104x105

Explanation :
No Explanation available for this question

# In a single pass drilling operation, athrough hole of 15mm diameter is to be drilled in a steel plate of 50mm thickness. Drill spindle speed is 500rpm, feed is 0.2mm/rev and drll point angle is 1180. Assuming 2mm clearance at approach and exit, the total drill time in seconds is

1.  35.1

2.  32.4

3.  31.2

4.  30.1

4

35.1

Explanation :
No Explanation available for this question

# Consider two infinitely long thin concentric tubes of circular cross section as shown in the figure. If D1 and D2 are the diameters of the inner and outer tubes respectively, then the view factor F22  is given by

1.  (D2/D1)-1

2.  Zero

3.  (D1/D2)

4.  1-(D1/D2)

4

1-(D1/D2)

Explanation :
No Explanation available for this question

# An incompressible fluid flowsover a flat palte with zero pressure gradient. The boundary layer thickness is 1mm at a location where the Reynolds number is 1000. If the velocity of the fluid alone is increased by a factor of 4, then the boundary layer thickness at the same location, in mm will be:

1.  4

2.  2

3.  0.5

4.  0.25

4

0.5

Explanation :
No Explanation available for this question

# A room contains 35kg of dry air and 0.5g of water vapour. The total pressure and temperature of air in the room are 100kpa and 250c respectively. Given that the saturation pressure for water at 350c is 3.17pa, the relative humidity of the air in the room is

1.  67%

2.  55%

3.  83%

4.  71%

4

71\%

Explanation :
No Explanation available for this question

# A fillet-welded joint is subjected to transverse loading F as shown in the figure. Both legs of the fillets are of 10mm size and the weld length is 30mm. if the allowable shear stress of the weild is 94Mpa, considering the minimum throat area of the weld, the maximum allowable transverse load in KN is

1.  14.44

2.  17.92

3.  19.93

4.  22.16

4

19.93

Explanation :
No Explanation available for this question

# A concentrated mass m is attached at the centre of a rod of length 2L as shown in the figure. The rod is kept in a horizontal equilibrium position by a spring of stiffness k. for very small amplitude of vibration, neglecting  the weights of the rod and spring, the undamped natural frequency  of the system  is

1.

2.

3.

4.

4

Explanation :
No Explanation available for this question

# The state of the stress at a point under plane stress condition is σxx=40mpa;σyy=100MPa an txy=40Mpa the radius of the Mohr’s circle  representing the given state of stress in Mpa is

1.  40

2.  50

3.  60

4.  100

4

50

Explanation :
No Explanation available for this question

1.  200

2.  300

3.  400

4.  100

4