# When the temperature of a solid metal increases

1.  strength of the metal decreases but ductility increases

2.  both strength and ductility of the metal decreases

3.  both strength and ductility of the metal increases

4.  strength of the metal increases but ductility decreases

4

strength of the metal decreases but ductility increases

Explanation :
No Explanation available for this question

# The strength of a brazed joint

1.  decreases with increase in gap between joining surfaces

2.  increases with decrease in gap between joining surfaces

3.  decreases up to certain gap between the two joining surfaces beyond which it increases

4.  increases up to certain gap between the two joining surfaces beyond which it decreases

4

increases up to certain gap between the two joining surfaces beyond which it decreases

Explanation :
No Explanation available for this question

# A zigzag cavity in a block of high strength alloy is to be finish machined. This can be carried out by using

1.  Electric discharge machining

2.  Electro-chemical machining

3.  Laser beam machining

4.  Abrasive flow machining

4

Electro-chemical machining

Explanation :
No Explanation available for this question

# In order to have interference fit, it is essential that the lower limit of the shaft should be

1.  greater than the upper limit of the hole

2.  lesser than the upper limit of the hole

3.  greater than the lower limit of the hole

4.  lesser than the lower limit of the hole

4

greater than the upper limit of the hole

Explanation :
No Explanation available for this question

# When 3-2-1 principle is used to support and locate a three dimensional work-piece during machining, the number of degrees of freedom that are restricted is

1.  7

2.  8

3.  9

4.  10

4

9

Explanation :
No Explanation available for this question

# The figure below shows a graph which qualitatively relates cutting speed and cost per piece produced The three curves 1, 2 and 3 respectively represent

1.  Machining cost, non-productive cost, tool changing cost

2.  non-productive cost, Machining cost, tool changing cost

3.  tool changing cost, Machining cost, non-productive cost

4.  tool changing cost , non-productive cost, Machining cost

4

Machining cost, non-productive cost, tool changing cost

Explanation :
No Explanation available for this question

# Which among the NC operations given below are continuous path operations Arc Welding (AW) Milling (M) Drilling (D) Punching is Sheet Metal (P) Laser Cutting of Sheet Metal (LC) Spot Welding (SW)

1.  AW, LC and M

2.  AW, D, LC and M

3.  D, LC, P and SW

4.  D, LC and SW

4

AW, D, LC and M

Explanation :
No Explanation available for this question

# An assembly activity is represented on an Operation Process Chart by the symbol

1.  AA

2.  A

3.  D

4.  O

4

O

Explanation :
No Explanation available for this question

# The sales of a product during the last four years were 860, 880, 870 units. The forecast for the fourth year 876 units. If the forecast for the fifth year, using simple exponential smoothing, is equal to the forecast using a three period moving average, the value of the exponential smoothing constant a is

1.  1/7

2.  1/5

3.  2/7

4.  2/5

4

2/7

Explanation :
No Explanation available for this question

1.  1/11

2.  1/10

3.  1/9

4.  1/2

4