Methods Engineering Process Quiz

The main steps are selecting the project, gathering existing information, analyzing the information, developing the ideal method, presenting and installing the method, conducting job analysis, and establishing time standards.

Work measurement is an objective, data-driven process for establishing time standards, primarily used for planning, comparing work methods, and determining capacity.

Standard time is calculated using the formula: Standard Time = Work Content x Performance Rating x (1 + PFD), where PFD represents personal delays, fatigue, and unavoidable delays.

<p>Work content refers to the amount of work contained in a product or process, expressed in person-hours or machine-hours.</p> Signup and view all the answers

<p>Allowances for PFD are essential because they account for personal delays, fatigue, and unavoidable delays, ensuring that the standard time is realistic and achievable.</p> Signup and view all the answers

<p>The purpose of conducting a time study is to track the time taken for each task element in a work cycle to improve efficiency and performance.</p> Signup and view all the answers

<p>Performance should be rated as normal or adjusted based on observations made either element by element, observation by observation, or as an average for each element.</p> Signup and view all the answers

<p>Time elements should be recorded in sequence, noting start and stop times, including observed element time and normal time, with performance rated where necessary.</p> Signup and view all the answers

<p>Defining termination points ensures that time readings are taken consistently at the same point in each cycle, allowing for accurate comparisons.</p> Signup and view all the answers

<p>Calculating cycles from pilot study data, like those shown in the provided equations, helps determine how many times a task can be performed within a set time frame, optimizing workflow.</p> Signup and view all the answers

<p>'YX' represents the predicted production time for the Xth unit.</p> Signup and view all the answers

<p>'K' represents the time required to produce the first unit, serving as a baseline for the learning curve.</p> Signup and view all the answers

<p>A 90% learning rate indicates that each time the cumulative production doubles, the time to produce each unit will decrease to 90% of the previous average time.</p> Signup and view all the answers

<p>The graph illustrates a decline in production time as more units are produced, reflecting the learning curve effect.</p> Signup and view all the answers

<p>The predicted production time for the 10th unit would be approximately 72.27 minutes.</p> Signup and view all the answers

<p>The rate of learning is represented as $2N$, where $N$ is the exponent derived from the logarithmic plot of production data.</p> Signup and view all the answers

<p>The time for the second unit will be approximately $94 imes 0.82 = 77.08$ minutes.</p> Signup and view all the answers

<p>'N' represents the exponent that influences the learning rate and is calculated based on the learning curve's slope.</p> Signup and view all the answers

<p>You can calculate it by solving the equation $45 = 94 X^{-0.2863}$ for $X$.</p> Signup and view all the answers

<p>'K' is equal to 94, as it represents the time taken for the first unit of production.</p> Signup and view all the answers

<p>A higher learning curve rate (e.g., 82%) leads to lower future production times compared to a lower rate.</p> Signup and view all the answers

<p>To derive 'n', calculate $n = \frac{\log(0.82)}{\log(2)}$ which yields approximately -0.2863.</p> Signup and view all the answers

<p>A 90% learning curve rate suggests that each time the cumulative production doubles, the production time decreases to 90% of the previous time.</p> Signup and view all the answers

<p>The interference allowance percentage is calculated using the formula: % Allowance = (I x MAT) / (MRT + MAT) where I is determined using the provided formula.</p> Signup and view all the answers

<p>The ratio X, defined as MRT/MAT, helps determine the level of interference based on the number of machines and is a vital part of deriving the interference allowance I.</p> Signup and view all the answers

<p>The standard time per unit is calculated as (150 + 5 + 125.5) / 55 units, which equals 5.1 min/unit.</p> Signup and view all the answers

<p>An interference of 125.5 minutes significantly reduces machine efficiency since it adds to the overall production time, making it essential to account for in time studies.</p> Signup and view all the answers

<p>Calculating % allowance for interference is crucial as it provides insight into time lost due to operator distractions, helping to improve work standards and efficiency.</p> Signup and view all the answers

<p>It takes approximately 48 or 49 cycles.</p> Signup and view all the answers

<p>It would take approximately 1065.9 minutes, or about 17.8 hours.</p> Signup and view all the answers

<p>Performance decrements occur and the extent of remission depends on the point on the learning curve prior to the interruption.</p> Signup and view all the answers

<p>The formula is $y_x = k + (k - s) \frac{(x - 1)}{1 - x_s}$.</p> Signup and view all the answers

<p>It took 53.5 minutes to perform the first cycle after the break.</p> Signup and view all the answers

<p>A higher learning curve rate means faster improvement in production time, leading to fewer cycles needed.</p> Signup and view all the answers

<p>$k$ represents the time taken for the first cycle after returning from a break.</p> Signup and view all the answers

<p>$n$ indicates the learning curve exponent, reflecting the rate of improvement over cycles.</p> Signup and view all the answers