# A  flywheel  connected  to  a  punching machine  has  to  supply  energy  of  400  Nm while running at a mean angular speed of 20 radians/s. If the total fluctuation of speed  is  not  to  exceed  ±2% ,  the mass moment  of  inertia  of  the  flywheel  in Kg-m2 is

1.  25

2.  50

3.  100

4.  125

4
Correct Answer :

25

Explanation :
No Explanation available for this question

# Area of a square is given to be S. If the sides are doubled, then the new area will be

1.  4s

2.  2s

3.  S/2

4.  S2

4
Correct Answer :

4s

Explanation :
No Explanation available for this question

# A  compound  gear  train with  gears  P, Q, R  and S  has  number  of  teeth  20,  40,15  and  20,  respectively.    Gears  Q  and  R  are mounted  on  the  same  shaft  as shown in the figure below.  The diameter of the gear Q is twice that of the gear R.    If  the module  of  the  gear  R  is  2 mm,  the  center  distance  in mm  between gears P and S is

1.  40

2.  80

3.  120

4.  160

4
Correct Answer :

80

Explanation :
No Explanation available for this question

# A pin jointed uniform rigid rod of weight W and Length L is supported horizontally by  an  external  force  F  as  shown  in  the  figure  below.    The  force  F  is  suddenly removed.    At  the  instant  of  force  removal,  the magnitude  of  vertical  reaction developed at the support is

1.  Zero

2.  w/4

3.  w/2

4.  w

4
Correct Answer :

w/4

Explanation :
No Explanation available for this question

# Two  cutting  tools  are  being  compared  for  a machining  operation.The  tool  life equations are: Carbide tool:  VT1.6=3000 HSS tool:  VT0.6=200 Where V is the cutting speed in m/min and T is the tool life in min.  The carbide  toll will provide higher tool life if the cutting speed in m/min exceeds

1.  15.0

2.  39.4

3.  49.3

4.  60.0

4
Correct Answer :

39.4

Explanation :
No Explanation available for this question

# In a CAD package, mirror image of a 2D point  P(5, 10) is to be obtained about a line which passes through the origin and makes an angle of  45° counterlockwise with the X-axis.  The coordinates of the transformed point will be

1.  (7.5, 5)

2.  (10, 5)

3.  (7.5, -5)

4.  (10, -5)

4
Correct Answer :

(10, 5)

Explanation :
No Explanation available for this question

# A linear programming problem is shown below: Maximize  3x + 7y                    3X+7Y≤10 Subject to    4x+6y≤8                    x,y ≥0 It has

1.  an unbounded objective function

2.  exactly one optimal solution

3.  exactly two optimal solutions

4.  infinitely many optimal solutions

4
Correct Answer :

exactly one optimal solution

Explanation :
No Explanation available for this question

# Cylindrical pins of mm diameter are electroplated in a shop.  Thickness of the plating is .Neglecting gage tolerances, the size of the GO gage in mm to inspect the plated components is

1.  25.042

2.  25.052

3.  25.074

4.  25.084

4
Correct Answer :

25.052

Explanation :
No Explanation available for this question

# During  the  electrochemical  machining  (ECM)  of  iron  (atomic  weight=56,valency=2)  at  current  of  1000  A  with  90%  current  efficiency,  the  material removal  rate was observed  to be 0.26 gm/s.    If Titanium  (atomic weight = 48, valency=3)  is machined by  the ECM process at  the current of 2000 A with 90% current efficiency, the expected material removal rate in gm/s will be

1.  0.11

2.  0.23

3.  0.30

4.  0.52

4
Correct Answer :

0.30

Explanation :
No Explanation available for this question

# A  single  degree  of  freedom  system  having  mass  1  kg  and  stiffness  10kN/m initially  at  rest  is  subjected  to  an  impulse  force  of  magnitude  5  kN  for  10 -4seconds.  The amplitude in mm of the resulting free vibration is

1.  0.5

2.  1.0

3.  5.0

4.  10.0

4
Correct Answer :

1.0

Explanation :
No Explanation available for this question

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