# When using a simple moving average to forecast demand, one would

1.  Give equal weight to all demand data

2.  Assign more weight to the recent demand data

3.  Include new demand data in the average without discarding the earlier data

4.  Include new demand data in the average after discarding some of the earlier demand data

4

Include new demand data in the average after discarding some of the earlier demand data

Explanation :
No Explanation available for this question

# The minimum point of the function f(x) = (x3/3)­-x is at

1.  x=1

2.  x=-1

3.  x=0

4.  x= 1/√3

4

x=1

Explanation :
No Explanation available for this question

# The rank of a 3 x 3 matrix C ( = AB), found by multiplying a non-zero column matrix A of size 3x1 and a non-zero row matrix B of size 1 x 3, is

1.  0

2.  1

3.  2

4.  3

4

0

Explanation :
No Explanation available for this question

# An unbiased coin is tossed three times. The probability that the head turns up in exactly two cases is

1.  1/9

2.  1/8

3.  2/3

4.  3/8

4

3/8

Explanation :
No Explanation available for this question

# 4 Two helical tensile springs of the same material and also having identical mean coil diameter and weight, have wire diameters d and d/2. The ratio of their stiffness is

1.   1

2.  4

3.  64

4.  128

4

64

Explanation :
No Explanation available for this question

# The maximum principal stress for the stress state shown in the figure is

1.  σ

2.  2 σ

3.  3 σ

4.  1.5 σ

4

2 σ

Explanation :
No Explanation available for this question

# The sun gear in the figure is driven clockwise at 100 rpm. The ring gear is held stationary. For the number of teeth shown on the gears, the arm rotates at

1.  0 rpm

2.  20 rpm

3.  33.33 rpm

4.  66.67 rpm

4

20 rpm

Explanation :
No Explanation available for this question

# For the loading on truss shown in the figure, the force in member CD is

1.  kN

2.  1k N

3.  √2 kN

4.  1/√2 kN

4

kN

Explanation :
No Explanation available for this question

# Bodies 1 and 2 shown in the figure have equal mass m. All surfaces are smooth. The value of force P required to prevent sliding of body 2 on body 1 is

1.  P=2 mg

2.  P= √2 mg

3.  P= 2√2 mg

4.   P= mg

4

P= mg

Explanation :
No Explanation available for this question

1.  √g/l

2.  √2g/(1cosα)

3.  √g/(1cosα)

4.  √g(cosα)/l

4