A 200 mm long down sprue has an area of cross-section of 650 mm2 where the pouring basin meets the down sprue (i.e. at the beginning of the down sprue). A constant head of molten metal is maintained by the pouring basin. The molten metal flow rate is 6.5 x 10^ mm3/s. Considering the end of down sprue to be open to atmosphere and an acceleration due to gravity of 104 mm/s2, the area of the down sprue in mm2 at its end (avoiding aspiration effect) should be

1.  650.0

2.  350.0

3.  290.7

4.  190.0

View Answer  
4
Correct Answer :

290.7


Explanation :
No Explanation available for this question

The force requirement in a blanking operation of low carbon steel sheet is 5.0 kN. The thickness of the sheet is ‘t’ and diameter of the blanked part is 'd'. For the same work material, if the diameter of the blanked part is increased to 1.5 d and thickness is reduced to 0.4 I, the new blanking force in kN is

1.  3.0

2.  4.5

3.  5.0

4.  8.0

View Answer  
4
Correct Answer :

3.0


Explanation :
No Explanation available for this question

Parts Manufacturing Process P: Computer chip 1. Electrochemical Machining Q : Metal forming dies and molds 2. Ultrasonic Machining R : Turbine blade 3. Eletrodischarge Machining S : Glass 4. Photochemical Machining Match the most suitable manufacturing processes for the following parts

1.  P-4 ,Q-3, R-1, S-2

2.  P-4 ,Q-3, R-2, S-1

3.  P-3 ,Q-1, R-4, S-2

4.  P-1 ,Q-2, R-4, S-3

View Answer  
4
Correct Answer :

P-4 ,Q-3, R-1, S-2


Explanation :
No Explanation available for this question

The maximum level of inventory of an item is 100 and it is achieved with infinite replenishment rate.The inventory becomes zero over one and half month due to consumption at a uniform rate. This cycle continues throughout the year. Ordering cost is Rs. 100 per order and inventory carrying cost is Rs. 10 per item per month. Annual cost (in Rs.) of the plan, neglecting material cost, is

1.  800

2.  2800

3.  4800

4.  6800

View Answer  
4
Correct Answer :

4800


Explanation :
No Explanation available for this question

In a machine shop, pins of 15 mm diameter arc-produced at a rate of 1000 per month and the same-is consumed at a rate of 500 per month. The production and consumption continue simultaneously till the maximum inventory is reached. Then inventory is allowed to reduced to zero due to consumption. The lot size of production is 1000. If backlog is not allowed, the maximum inventory level is

1.  400

2.  500

3.  600

4.  700

View Answer  
4
Correct Answer :

500


Explanation :
No Explanation available for this question

The net requirements of an item over 5 consecutive weeks are 50 - 0 - 15 - 20 - 20. The inventory carrying cost and ordering cost are Re. 1 per item per week and Rs. 100 per order respectively. Starling inventory is zero. Use "Least Unit Cost Technique" for developing the plan. The cost of the plan (in Rs.) is

1.  200

2.  250

3.  255

4.  260

View Answer  
4
Correct Answer :

250


Explanation :
No Explanation available for this question

Match the items in columns I and II. Column I Column II (P) Gauss-Seidel method (1) Interpolation (Q) Forward Newton-Gauss method (2) Non-linear differential equations (R) Runge-Kutta method (3) Numerical integration (S) Trapezoidal Rule (4) Linear algebraic equations   

1.  P - 1 Q-4   R-3   S-2

2.  P - 1Q-4   R-2   S-3

3.  P - 1 Q - 3 R-2   S - 4

4.  P - 4 Q-1   R-2   S-3

View Answer  
4
Correct Answer :

P - 4 Q-1   R-2   S-3


Explanation :
No Explanation available for this question

Let x denote a real number. Find out the INCORRECT statement.

1.  S = {x : x > 3} represents the set of all real numbers greater than 3

2.  S = {x : x2 < 0} represents the empty set

3.  S = {x : x ε A and x e B} represents the union of set A and set B

4.  S = {x : a< x < b} represents the set of all real numbers between a and b, where a and b are real numbers

View Answer  
4
Correct Answer :

S = {x : x ε A and x e B} represents the union of set A and set B


Explanation :
No Explanation available for this question

A box contains 20 defective items and 80 non-defective items. If two items are selected at random without replacement, what will be the probability that both items are defective.

1.  1/5

2.  1/25

3.  20/99

4.   19/495

View Answer  
4
Correct Answer :

19/495


Explanation :
No Explanation available for this question

For a circular shaft of diameter d subjected to torque T, the maximum value of the shear stress is:

1.   64T/πd3

2.  32T/πd3

3.  16T/πd3

4.  8T/πd3

View Answer  
4
Correct Answer :

16T/πd3


Explanation :
No Explanation available for this question
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