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145.

The linear programming is used for optimization problems, which satisfy the following conditions
1. Objective function expressed as a linear function of variables.
2. Resources are unlimited.
3. The decision variables are inter-related and non-negative.
Which of the above statements is/are correct?
(a) 1, 2 and 3
(b) 2 and 3
(c) 1 only
(d) 1 and 3

asked in Mechanical Paper-2, 2010

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146.

Value engineering is necessary to be used when following symptoms are indicated
1. New product designs are to be introduced.
2. The firm is unable to meet delivery date
3. Rate of return on investment goes down.
Which of the above statements is/are correct?
(a) 1,2 and 3
(b) 2 only
(c) 1 and 3
(d) 2 and 3

asked in Mechanical Paper-2, 2010

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147.

A dealer for washing machines forecast the demand at the rate of 600 unit per month for the next four months. The actual demand is found to be 500, 680, 800 and 900 units. The mean absolute deviation (MAD) and the BIAS are found to be
(a) 170 and -120
(b) -120 and 170
(c) 340 and 240
(d) 240 and 340

asked in Mechanical Paper-2, 2010

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148.

In the moving average method of forecasting the number of periods (AP) of data is dependent on the
(a) criteria of accuracy only
(b) impulse response only
(c) noise damping only
(d) criteria of accuracy, impulse response and noise damping

asked in Mechanical Paper-2, 2010

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149.

In exponential smoothing method of forecasting for higher values of the smoothing constant
(a) will be more sensitive to forecast of the previous period
(b) will be more sensitive to changing patterns in demand
(c) will not be affected by the forecast of the previous period
(d) will not be affected by the changing patterns in demand

asked in Mechanical Paper-2, 2010

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150.

Which of the following is not the characteristics of exponential smoothing method of forecasting?
(a) This represents a weighted average of the past observations
(b) All observations are assigned equal weightage
(c) If smoothing coefficient is 1 then the latest forecast would be equal to previous period actual demand
(d) The technique is not simple as compared to moving average method

asked in Mechanical Paper-2, 2010

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