# 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

4

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

4

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

4

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

4

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

4

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

4

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

4

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.

4

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

4

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

4