Exit Exam 1 (part 2) 1-50 Flashcards
What is the overall normal time expressed in seconds considering the rating of operator in terms
of skill (B2= +0.08) and effort (E1 = - 0.04)?
a. 72.63 seconds
b. 75.09 seconds
c. 77.84 seconds
d. 80.56 seconds
B. 75.09 sec
A worker takes 1 min to service a steam engine and 0.1 min to walk to the next steam engine.
Each steam engine runs automatically for 5 min. The worker earns $11/hr. and the engine costs $20/hr. What is the lowest cost per unit of output?
a. $2.40
b. $2.60
с. $2.35
d. $2.22
A. 2.40
In reference to Question 2, what is the production rate of five machines per hour?
a. 60 units/hr.
b. 40 units/hr.
c. 50 units/hr.
d. 90 units/hr.
c. 50 units/hr.
A specific task has a normal time of 45 min. The allowances have been set as 65 min in a 480 min shift. Determine the standard time of the shift and task.
a. 52.05 min
b. 53.43 min
c. 65.11 min
d. 70.33 min
B. 53.43 min
The IE over at the Higgins Co. produced the following readings where elemental performance rating was used. The normal times for these elements are: 0.29, 0.275, 0.268, 0.245, 0.23, 0.278, 0.311, 0.305, 0.285, and 0.291. What is the normal time and standard time if the allowance for this element is 15%?
a. 0.12
b. 0.33
c. 0.41
d. 0.57
d. 0.57
It is used in situations where it is not known when a facility needs to be serviced or how long servicing takes.
a. Queuing Theory
b. Random Servicing
c. Game Theory
d. Line Balancing
B, random servicing
It states that there is only “vital few and trivial many”.
a. Avogadro’s Law
b. Pareto Principle
c. Gilbreth’s Law
d. Ford’s Law
B. Pareto principle
Calculate the proportion that will be lost in operating 4 machines when each machine operates
70% of the time and operator attention is 30%.
a. 9%
b. 11%
с. 18%
d. 24%
C. 18%
Given the standard of 8.265 minutes per piece in hours per hundred pieces, what would be the operator’s efficiency if 87 pieces were completed during the working day?
a. 150%
b. 160%
с. 170%
d. 180%
A. 150%
Hans Martin has been asked to prepare an estimate of proportion of time that a press machine operator spends adjusting the machine, with 90% confidence level. He believes the proportion will be 25%. If Hands uses a sample size of 500 observations, what is the maximum possible error that will be associated with the estimate?
a. 2.00%
b. 2.45%
c. 3.19%
d. 6.23%
B. 2.45%
It is the evaluation of task in terms of the time that should be allowed by an average worker to perform a task.
a. Time Study
b. Element
c. Work Measurement
d. Work Sampling
C. Work measurement
Forty units of a product are scheduled to be assembled to meet the demand of the customer. A team of three workers will assemble the products and they have already produced three units. Time for the first unit was not recorded. While the second and third units took 18 min. and 16.4 min, respectively. Use the Crawford learning curve model to determine the percent learning rate.
a. 61.06%
b. 66.24%
с. 78.55%
d. 85.29%
d. 85.29%
Based on the Question 12, determine the most likely time it took to assemble the first unit.
a. 11.20 min.
b. 21.11 min.
c. 13.24 min.
d. 19.95 min.
b. 21.11 min.
How many observations would be required in a time study in order to obtain 98% confidence that the average time observed is no more than 0.3 minutes from the true mean. Assuming a standard deviation of cycle time of 1.3 min.
a. 100 observations
b. 102 observations
c. 103 observations
d. 104 observations
b. 102 observations
A work sampling study was performed on the day shift maintenance department in a power generating station. Day-shift consists of 3 repair persons, each of whom works independently to repair equipment when it breaks down. A total of 600 observations (200 per repair person) were taken during a four-week period (160 total hours of operation). The observations were classified into the following categories: (1) maintenance person repairing equipment, (2) maintenance person idle. There were a total of 345 observations in category 1. It is known that 67 equipment were repaired during the 4-week period. How many more observations would be required to be 95% confident that the true proportion of category 1 is within #0.04 of the proportion indicated by the observations?
a. 387 observations
b. 487 observations
c. 587 observations
d. 687 observations
c. 587 observations
To eliminate bottlenecks, if any, a company should:
a. Assign more than one worker to the bottleneck stations).
b. Assign one worker to work on two or more stations as long as their combined task times is less than the cycle time.
c. Restudy the existing work method to see if task times can still be reduced.
d. All of the above.
D. All of the above
A study revealed that a group of three semi-automatic machines assigned to one operator operate 65 percent of the time unattended. Operator service time at irregular intervals averaged 35 percent of the time on these three machines. What would be the estimated machine hours lost per eight-hour workday because of lack of operator?
a. 1.9112
b. 0.6864
с. 2.5976
d. 1.3118
C.
A manual assembly line is being planned for an assembled product whose annual demand is expected to be 175,000 units per year. The line will operate in two shifts (4,000 hours per year).
Work content time of the product is 53.7 minutes. For planning purposes, the following parameter
values will be used: uptime efficiency = 93%, balancing efficiency = 97%, and the repositioning
time = 9 seconds. Determine the required hourly output of the line.
a. 43.75 units/hr.
b. 40.69 units/hr.
c. 42.44 units/hr.
d. 39.47 units/hr.
a. 43.75 units/hr.
In reference to Question 18, determine the cycle time.
a. 1.33 min.
b. 1.24 min.
c. 1.28 min.
d. 2.61 min.
C.
In reference to Question 18, determine the ideal minimum number of workers required.
a. 41
b. 42
c.43
d. 44
B
