What is approximate percentage change is the life, t, of a tool with zero rake angle used in orthogonal cutting when its clearance angle, α, is changed from 10° to 7° (Hint: Flank wear rate is proportional to cot a)

1.  30% increase

2.  30% decrease

3.  70% increase

4.  70% decrease

View Answer  
4
Correct Answer :

30\% decrease


Explanation :
No Explanation available for this question

In computing Wilson's economic lot size for a n item, by mistake the demand rate estimate used was 40% higher than the tree demand rate. Due to this error in the lot size computation, the total cost of setups plus inventory holding per unit time, would rise above the true optimum by approximately

1.  1.4%

2.  6.3%

3.  18.3%

4.  8.7°%

View Answer  
4
Correct Answer :

18.3\%


Explanation :
No Explanation available for this question

At a production ma chine, parts arrive according to a Poisson process at the rate of 0.35 parts per minute. Processing time for parts have exponential distribution with mea n of 2 minutes. What is the probability that a random part arrival finds that there are already 8 parts in the system (in ma chine + in queue)

1.  0.0247

2.  0.082

3.  0.0173

4.  0.0576

View Answer  
4
Correct Answer :

0.0173


Explanation :
No Explanation available for this question

Suppose X is a normal random variable with mean 0 and variance 4. Then the mea n of the absolute value of X is

1.  1/√2π

2.  2√2/√π

3.  2√2/ π

4.  2/√π

View Answer  
4
Correct Answer :

2√2/√π


Explanation :
No Explanation available for this question

If Z=f(x, y), dz is equal to

1.  

2.  

3.  

4.  

View Answer  
4
Correct Answer :


Explanation :
No Explanation available for this question

1.  ∞

2.  0

3.  2

4.  1

View Answer  
4
Correct Answer :

2


Explanation :
No Explanation available for this question

Availability of a system at any given state is

1.  a property of the system

2.  the maximum work obtainable as the system goes to dead state

3.  the total energy of the system

4.   the maximum useful work obtainable as the system goes to dead state

View Answer  
4
Correct Answer :

the maximum useful work obtainable as the system goes to dead state


Explanation :
No Explanation available for this question

1.  Aex + Bex

2.  ex(Ax +B)

3.  e -x {A cos(√3/2)x+ B cos (√3/2)x}

4.  e –x/2  {A cos(√3/2)x+ B cos (√3/2)x}

View Answer  
4
Correct Answer :

e –x/2  {A cos(√3/2)x+ B cos (√3/2)x}


Explanation :
No Explanation available for this question

1.  1, 2, 3

2.  1, 2, 2

3.  1, 0, 0

4.  0, 2, 3

View Answer  
4
Correct Answer :

1, 2, 2


Explanation :
No Explanation available for this question

A steam turbine receives steam steadily a t 10 bars with a n enthalpy of 3000 kJ/kg and discharges at 1 bar with an enthalpy of 2700 kJ/kg. The work output is 250 kJ/kg. The changes in kinetic and potential energies are negligible. The heat transfer from the turbine casing to the surroundings is equal to

1.   0 kJ

2.  50 kJ 

3.  150 kJ

4.  250 kJ

View Answer  
4
Correct Answer :

50 kJ 


Explanation :
No Explanation available for this question
Previous Next

Interview Questions

MongoDB
Java Script
Node JS
PHP
JQuery
Python