# In simple exponential smoothing forecasting, to give higher weightage to recent demand information, the smoothing constant must be close to

1.  -1

2.  zero

3.  0.5

4.  1.0

4

1.0

Explanation :
No Explanation available for this question

# A lightly loaded full journal has journal diameter of 50mm, bush bore of 50.50mm and bush length of 20 mm. If rotational speed of journal is 1200 rpm and average viscosity of liquid lubricant is 0.3 Pa-sec, the power loss (inW) will be:

1.  37

2.  74

3.  118

4.  237

4

37

Explanation :
No Explanation available for this question

# For the stability of a floating body, under the influence of gravity alone, which of the following is TRUE

1.  Metacentre should be below centre of gravity

2.  Metacentre should be above center of gravity

3.  Metacentre and center of gravity must lie on the same horizontal line

4.  Metacentre and center of gravity must lie on the same vertical line

4

Metacentre should be above center of gravity

Explanation :
No Explanation available for this question

# A circular plate 1m in diameter is submerged vertically in water such that its upper edge is 8mbelow the free surface of water. The total hydrostatic pressure force on one side of plate is:

1.  6.7 KN

2.  65.4 KN

3.  45.0 KN

4.  77.0 KN

4

65.4 KN

Explanation :
No Explanation available for this question

# The velocity potential function for a source varies with the distance r as,

1.  1/r

2.  1/r2

3.  er

4.  1n r

4

1/r

Explanation :
No Explanation available for this question

# A streamline and an equipotential line in a flow field

1.  Are parallel to each other

2.  Are perpendicular to each other

3.  Intersect at an acute angle

4.  Are identical

4

Are perpendicular to each other

Explanation :
No Explanation available for this question

# A Newtonian fluid has the following velocity field  = x2yÎ + 2xy2z –yz3? The rate of shear deformation εyz at the point x = -2, y= -1 and z = 2for the given flow is:

1.  -6

2.   -2

3.  -12

4.  4

4

-12

Explanation :
No Explanation available for this question

# The stream function in a two dimensional flow field is given by Ψ = x2 – y2 The magnitude of the velocity at point (1, 1) is

1.  2

2.   2√2

3.  4

4.  8

4

2√2

Explanation :
No Explanation available for this question

# A smooth pipe of diameter 200 mm carries water. The pressure in the pipe at section S1 (elevation: 10m) is 50kPa. At section S2 (elevation: 12m) the pressure is 20kPa and velocity is 2ms-1. Density of water is 1000kgm-3 and acceleration due to gravity is 9.8ms-2. Which of the following is TRUE

1.  flow is from S1 to S2and head loss is 0.53m

2.  flow is from S2 to S1 and head loss is 0.53m

3.  flow is from S1 to S2and head loss is 1.06m

4.  flow is from S2 to S1and head loss is 0.53m

4

flow is from S1 to S2and head loss is 1.06m

Explanation :
No Explanation available for this question

1.  10

2.  15

3.  20

4.  25

4