# A moving average system is used for forecasting weekly demand. F,(t) and F„(t) are sequences of forecasts with parameters m, and m2, respectively, where m, and m, (m, > m2) denote the numbers of weeks over which the moving averages are taken. The actual demand shows a step increase from d, to d2 at a certain time. Subsequently

1.  neither F1(t) nor F2(t) will catch up with the value d2

2.  both sequences F1(t) and F2(t) will reach d2 in the same period

3.  F1(t) will attain the value d2 before F2(t)

4.  F2(t) will attain the value d2 before F1(t)

4

F1(t) will attain the value d2 before F2(t)

Explanation :
No Explanation available for this question

# For the network below, the objective is to find the length of the shortest path from node P to node G. Let dv be the length of directed are from node i to node j. Let s be the length of the shortest path from P to node j. Which of the following equations can be used to find sc

1.  SG=Min{SQ, SR}

2.  SG=Min{SQ - dQG, SR - dRG}

3.  SG=Min{SQ + dQG, SR + dRG}

4.  SG=Min{ dQG, dRG}

4

SG=Min{SQ + dQG, SR + dRG}

Explanation :
No Explanation available for this question

# The product structure of an assembly P is shown in the figure. Estimated demand for end product P is as follows Week 1 2 3 4 5 6 Demand 1000 1000 1000 1000 1200 1200 ignore lead times for assembly and sub-assembly. Production capacity (per week) for component R is the bottleneck operation. Starting with zero inventory, the smallest capacity that will ensure a feasible production plan up to week 6 is

1.  1000

2.  1200

3.  2200

4.  2400

4

2200

Explanation :
No Explanation available for this question

# One tooth of a gear having 4 module and 32 teeth is shown in the figure. Assume that the gear tooth and the corresponding tooth space make equal intercepts on the pitch circumference. The dimensions 'a' and 'b', respectively, are closest to

1.  6.08 mm, 4 mm

2.  6.48 mm, 4.2 mm

3.  6.28 mm, 4.3 mm

4.  6.28 mm, 4.1mm

4

6.28 mm, 4.1mm

Explanation :
No Explanation available for this question

# While cooling, a cubical casting of side 40 mm undergoes 3%, 4% and 5% volume shrinkage during the liquid state, phase transition and solid state, respectively. The volume of metal compensated from the riser is

1.  2%

2.  7%

3.  8%

4.  9%

4

7\%

Explanation :
No Explanation available for this question

# In a single point turning tool, the side rake angle and orthogonal rake angle are equal. q> is the principal cutting edge angle and its range is 0° ≤  φ ≤ 90°. The chip flows in the orthogonal plane. The value of cp is closest to

1.  0°

2.  45°

3.  60°

4.  90°

4

90°

Explanation :
No Explanation available for this question

# A researcher conducts electrochemical machining (ECM) on a binary alloy (density 6000 kg/m°) of iron (atomic weight 56, valency 2) and metal P (atomic weight 24, valency 4). Faraday's constant = 96500 coulomb/mole Volumetric material removal rate of the alloy is 50 mm Vs at a current of 2000 A. The percentage of the metal P in the alloy is closest to

1.  40

2.  25

3.  15

4.  79

4

25

Explanation :
No Explanation available for this question

# In a single pass rolling operation, a 20 mm thick plate with plate width of 100 mm, is reduced to 18 mm. The roller radius is 250 mm and rotational speed is 10 rpm. The average flow stress for the plate material is 300 MPa. The power required for the rolling operation in kW is closest to

1.  15.2

2.  18.2

3.  30.4

4.  45.6

4

15.2

Explanation :
No Explanation available for this question

# In arc welding of a butt joint, the welding speed is to be selected such that highest cooling rate is achieved. Melting efficiency and heat transfer efficiency are 0.5 and 0.7, respectively. The area of the weld cross section is 5 mm2 and the unit energy required to melt the metal is 10 J/mm3. If the welding power is 2 kW, the welding speed in mm/s is closest to

1.  4

2.  14

3.  24

4.  34

4

14

Explanation :
No Explanation available for this question

# The figure shows an incomplete schematic of a conventional lathe to be used for cutting threads with, different pitches. The speed gear box U_ is shown and the feed gear box U> is to be placed. P, Q, R and S denote locations and have no other significance. Changes in Ur should NOT affect the pitch of the thread being cut and changes in U, should NOT affect the cutting speed The correct connections and the correct placement of Us are given by

1.  Q and E are connected. Us is placed between P and Q

2.  S and E are connected. Us is placed between R and S

3.  Q and E are connected. Us, is placed between Q and E

4.  S and E are connected. U, is placed between S and E

4

S and E are connected. U, is placed between S and E

Explanation :
No Explanation available for this question

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