# If the principal stresses in  a plane  stress problem,  are σ1=100 MPa, the magnitude of the maximum shear stress (in MPa) will be

1.  60

2.  50

3.  30

4.  20

4

30

Explanation :
No Explanation available for this question

# A  simple quick  return  mechanism  is  shown  in t he  figure.  The forward to return ratio  of the quick return mechanism is  2:1. If the radius of the crank O1P is 12 mm, then the distance 'd' (in mm) between the crank centre to lever pivot centre point should be

1.  144.3

2.  216.5

3.  240.0

4.  250.0

4

250.0

Explanation :
No Explanation available for this question

# The  rotor  shaft  of  a large  electric motor  supported  between  short  bearings  at both  deflection  of  1.8mm  in  the  middle  of  the  rotor.  Assuming the  rotor  to  be perfectly  balanced and supported at knife edges  at  both  the  ends,  the  likely critical speed (in rpm) of the shaft is

1.  350

2.  705

3.  2810

4.  4430

4

705

Explanation :
No Explanation available for this question

# The  effective  number  of  lattice  points  in  the  unit  cell  of  simple  cubic,  body centered cubic, and face centered cubic space lattices, respectively, are

1.  1, 2, 2

2.  1, 2, 4

3.  2, 3, 4

4.  2, 4, 4

4

1, 2, 4

Explanation :
No Explanation available for this question

# Friction at the tool-chip interface can be reduced by

1.  decreasing the rake angle

2.  increasing the depth of cut

3.  decreasing the cutting speed

4.  increasing the cutting speed

4

increasing the cutting speed

Explanation :
No Explanation available for this question

# Two  streams  of  liquid metal,  which  are not  hot  enough  to fuse  properly,  result into a casting defect known as

1.  cold shut

2.  swell

3.  sand wash

4.  scab

4

cold shut

Explanation :
No Explanation available for this question

# The expected time (te) of  a  PERT  activity  in  terms  of  optimistic  time (t0), pessimistic time (tp) and most likely time (tl) is given by

1.  te=(to+4 tl+ tp)/6

2.  te=(to+4 tp+ tl)/6

3.  te=(t0+4 tl+ tp)/3

4.  te=(t0+4 tl+ tl)/3

4

te=(to+4 tl+ tp)/6

Explanation :
No Explanation available for this question

# Which of the following is the correct data structure for solid models

1.  solid part faces  edges   vertices

2.  solid part edges faces vertices

3.  vertices edges faces solid parts

4.  vertices  faces edges solid parts

4

solid part faces  edges   vertices

Explanation :
No Explanation available for this question

# The solution of xdy/dx + y=x4 with the condition y(1)=6/5 is:

1.   y=(x4/5)+(1/x)

2.  y=(4x4/5)+(4/5x)

3.  y=(x4/5)+ 1

4.  y=(x5/5)+ 1

4

y=(x4/5)+(1/x)

Explanation :
No Explanation available for this question

# An  analytic  function  of  a  complex  variable z=x + iy  is expressed as f(z) =u(x, y)+iv(x, y) where i=√-1. If u=xy, the expression for v

1.   (x+y)2/2 +k

2.  (x2-y2)/2 +k

3.  (y2- x2)/2 +k

4.  (x - y)2/2 +ka

4

(y2- x2)/2 +k

Explanation :
No Explanation available for this question

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