# A gas turbine cycle with infinitely large number of stages during compression and expansion leads to

1.  Stirling cycle

2.  Atkinson cycle

3.  Ericsson cycle

4.  Brayton cycle

4

Ericsson cycle

Explanation :
No Explanation available for this question

# Two  insulating  materials  of  thermal  conductivity  K  and  2K  are  available  for lagging a pipe  carrying a hot  fluid. If the  radial thickness of each material  is the same.

1.  material  with higher thermal  conductivity should be used for the  inner layer and one with lower thermal conductivity for the outer material  with  lower  thermal  conductivity  should  be  used  for  the  inner  layer

2.  material  with  lower  thermal  conductivity  should  be  used  for  the  inner  layer and one with higher thermal conductivity for the outer

3.    it is immaterial in which sequence the insulating materials are used

4.  it is not possible to judge unless numerical values of dimensions are given

4

material  with  lower  thermal  conductivity  should  be  used  for  the  inner  layer and one with higher thermal conductivity for the outer

Explanation :
No Explanation available for this question

# The value of ξ in the mean value theorem of f(b) – f(a) =(b-a) f’(ξ) for f(x) = Ax2+Bx+C in (a, b) is

1.  b+a

2.  b-a

3.  (b+a)/2

4.  (b-a)/2

4

(b+a)/2

Explanation :
No Explanation available for this question

# The process of hot extrusion is used to produce

1.  Curtain rods made of aluminum

2.  Steel pipes for domestic water supply

3.  Stainless steel tubes used in furniture

4.  Large size pipes used in city water mains

4

Stainless steel tubes used in furniture

Explanation :
No Explanation available for this question

# In deep drawing of sheets, the values of limiting draw ratio depends on

1.  Percentage elongation of sheet metal

2.  Yield strength of sheet metal

3.  Type of press used

4.  Thickness of sheet

4

Thickness of sheet

Explanation :
No Explanation available for this question

# For  a  given  set  of  operating  pressure  limits  of  a  Rankine  cycle,  t he  highest efficiency occurs for

1.  Saturated cycle

2.  Superheated cycle

3.  Reheat cycle

4.  Regenerative cycle

4

Regenerative cycle

Explanation :
No Explanation available for this question

# The practice to use steam on the shell side and cooling water on the tube side in condensers of steam power plant is because

1.  to  increase  overall  heat  transfer  coefficient  water  side  velocity  can  be increased if water is at the tube side

2.  Condenser can act as a storage unit for condensed steam

3.    Rate of condensation of steam is invariably smaller than the mass flow rate of cooling water

4.  It is easier to maintain vacuum on the shell side than on the tube side

5.

5

to  increase  overall  heat  transfer  coefficient  water  side  velocity  can  be increased if water is at the tube side

Explanation :
No Explanation available for this question

# The electrodes used in arc welding are coated. This coating is not expected to

1.  Provide protective atmosphere to weld

2.  Stabilize the arc

4.  Prevents electrode from contamination

4

Prevents electrode from contamination

Explanation :
No Explanation available for this question

# In a flow field, the streamlines and equipotential lines

1.  are parallel

2.  cut at any angle

3.  are orthogonal everywhere in the flow field

4.  cut orthogonally except at the stagnation points

4

are orthogonal everywhere in the flow field

Explanation :
No Explanation available for this question

1.    334

2.  356

3.  668

4.    711

4