For rigid perfectly plastic work material, negligible interface friction and no redundant work, the theoretically maximum possible reduction in the wire drawing operation is

1.  0.36

2.  0.63

3.  1.00

4.  2.72

View Answer  
4
Correct Answer :

0.63


Explanation :
No Explanation available for this question

During orthogonal cutting of mild steel with a 10° rake angle tool the chip thickness ratio was obtained as 0.4. the shear angle (in degrees) evaluated from this data is

1.  6.53

2.  20.22

3.  22.94

4.  50.00

View Answer  
4
Correct Answer :

22.94


Explanation :
No Explanation available for this question

Resistance spot welding is performed on two plates of 1.5 mm thickness with 6 mm diameter electrode, using 15000 A current for time duration of 0.25 seconds. Assuming the interface resistance to be 0.0001S2, the heat generated to form the weld is

1.  5625 W-sec

2.  8437 W-sec

3.  22500 W-sec

4.  33750 W-sec

View Answer  
4
Correct Answer :

5625 W-sec


Explanation :
No Explanation available for this question

Fifty observations of a production operation revealed a mean cycle time of 10 min. the worker was evaluated to be performing at 90% efficiency. Assuming the allowances to be 10% of the normal time, the standard time (in seconds) for the job is

1.  0.198

2.  7.3

3.  9.0

4.   9.9

View Answer  
4
Correct Answer :

9.0


Explanation :
No Explanation available for this question

3-2-1 method of location in a jig or fixture would collectively restrict the work piece in n degrees of freedom, where the value of n i

1.  6

2.  8

3.  9

4.  12

View Answer  
4
Correct Answer :

9


Explanation :
No Explanation available for this question

In an NC machining operation, the tool has to be moved from point (5, 4) to point (7, 2) along a circular path with center at (5, 2). Before starting the operation, the tool is at (5, 4). The correct G and M code for this motion is

1.  N010 G03 X7.0 Y2.0 I5.0 J2.0

2.  N010 G02 X7.0 Y2.0 I5.0 J2.0

3.  N010 G01 X7.0 Y2.0 I5.0 J2.0

4.  N010 G00 X7.0 Y2.0 I5.0 J2.0

View Answer  
4
Correct Answer :

N010 G02 X7.0 Y2.0 I5.0 J2.0


Explanation :
No Explanation available for this question

1.  1

2.  2

3.  3

4.  √2

View Answer  
4
Correct Answer :

1


Explanation :
No Explanation available for this question

For the function = ax2y - y3 to represent the velocity potentiaI of an ideaI fluid, should be equal to zero. In that case, the value of ‘a’  ha s to be:

1.  -1

2.  1

3.  -3

4.  3

View Answer  
4
Correct Answer :

3


Explanation :
No Explanation available for this question

Laplace transform of (a+bt)2 where ‘a’, and ‘b’ are constants is given by:

1.  (a+bs)2

2.  1/(a+bs)2

3.   (a2/s)+(2ab/s2)+(2b2/s3)

4.   (a2/s)+(2ab/s2)+(b2/s3) 

View Answer  
4
Correct Answer :

(a2/s)+(2ab/s2)+(2b2/s3)


Explanation :
No Explanation available for this question

Following are the values of a fucntion Y(x):y(-1)=5, y(0),y(1)=8, (dy/dx) at x=0 as per Newton’s central difference scheme is:

1.  0

2.  1.5

3.  2.0

4.  3.0

View Answer  
4
Correct Answer :

3.0


Explanation :
No Explanation available for this question
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