Which one of the following configurations has the highest fin effectiveness

1.  Thin, closely spaced fins

2.  Thin, widely spaced fins

3.  Thick widely spaced fins

4.  Thick, closely spaced fins

View Answer  
4
Correct Answer :

Thin, closely spaced fins


Explanation :
No Explanation available for this question

An ideal gas of mass  m and temperature T1 undergoes a reversible isothermal process from an intial pressure p1 to a final pressure p2. The heat loss during the process is Q. The entropy change Δs of the gas is

1.  mR ln (p2/p1)

2.  mR ln (p1/p2)

3.  mR ln (p2/p1)-Q/T1

4.  0

View Answer  
4
Correct Answer :

mR ln (p1/p2)


Explanation :
No Explanation available for this question

In the mechanism given below, if the angular velocity of the eccentric circular disc is 1 rad/s, the angular velocity (rad/s) of the follower link for the instant shown in the figure is

1.  0.05

2.  0.1

3.  5.0

4.  10.0

View Answer  
4
Correct Answer :

0.1


Explanation :
No Explanation available for this question

A circular solid disc of uniform thickness 20mm, radius 200mm and mass 20kg, is used as a flywheel. If it rotates at 600rpm, the kinetic energy of the flywheel, in joules is

1.  395

2.  790

3.  1580

4.  3160

View Answer  
4
Correct Answer :

790


Explanation :
No Explanation available for this question

A cantilever beam of length L is subjected to a moment M at the free end. The moment of inertia of the beam cross section about the neutral axis is I and the young modulus Is E. the magnitude of the maximum deflection is

1.  ML2/2EI

2.  ML2/EI

3.  2ML2/EI

4.  4ML2/EI

View Answer  
4
Correct Answer :

ML2/2EI


Explanation :
No Explanation available for this question

For a long slender column of uniform cross section, the ratio of critical bucking load for the case with both ends clamped to the case with both ends hinged is

1.  1

2.  2

3.  4

4.  8

View Answer  
4
Correct Answer :

4


Explanation :
No Explanation available for this question

At x=0, the function f(x)=x3+1 has

1.  A maximum value

2.  A minimum value

3.  A singularity

4.  A point of 9inflection

View Answer  
4
Correct Answer :

A point of 9inflection


Explanation :
No Explanation available for this question

For the spherical surface, x2+y2+z2-1, the unit outward normal vector at the point (1/√2, 1/√2, 0) is given by

1.  

2.  

3.  

4.  

View Answer  
4
Correct Answer :


Explanation :
No Explanation available for this question

Match the following metal forming processes with their associated stresses in the work piece. List I List II P   coining Tensile Q. Wire Drawing 2. Shear R. Blanking 3. Tensile and compressive S. Deep Drawing 4. Compressive  

1.  P-4, Q-1, R-2, S-3

2.  P-4, Q-1, R-3, S-2

3.  P-1, Q-2, R-4, S-3

4.  P-1, Q-3, R-2, S-4

View Answer  
4
Correct Answer :

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


Explanation :
No Explanation available for this question

In abrasive jet machining, as the distance between the nozzle tip and the work surface increases, the material removal rate

1.  Increases continuously

2.  Decreases continuously

3.  Decreases, becomes stable and then increases

4.  Increases, becomes stable and then decreases

View Answer  
4
Correct Answer :

Increases, becomes stable and then decreases


Explanation :
No Explanation available for this question
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