subject

Engineering, 27.08.2021 16:40 supertailsninja453

A worker-machine operation was found to involve 3.3 minutes of machine time per cycle in the course of 40 cycles of stopwatch study. The worker’s time averaged 1.9 minutes per cycle, and the worker was given a rating of 120 percent (machine rating is 100 percent). Midway through the study, the worker took a 10-minute rest break. Assuming an allowance factor of 12 percent of work time, determine the standard time for this job.

ansver

Answers: 1

Show answers

Another question on Engineering

question

Engineering, 04.07.2019 18:10

Adouble-strand no. 60 roller chain is used to transmit power between a 13-tooth driving sprocket rotating at 300 rev/min and a 52-tooth driven sprocket. a) what is the allowable horsepower of this drive? b) estimate the center-to-center distance if the chain length is 82 pitches. c) estimate the torque and bending force on the driving shaft by the chain if the actual horsepower transmitted is 30 percent less than the corrected (allowable) power.

Answers: 3

question

Engineering, 04.07.2019 18:10

Burgers vector is generally parallel to the dislocation line. a)-true b)-false

Answers: 2

question

Engineering, 04.07.2019 18:10

Which of the following controllers anticipates the future from the slope of errors over time? a)-proportional b)-on/off c)-integral d)-derivative.

Answers: 2

question

Engineering, 04.07.2019 18:10

Awall of 0.5m thickness is to be constructed from a material which has average thermal conductivity of 1.4 w/mk. the wall is to be insulated with a material having an average thermal conductivity of 0.35 w/mk so that heat loss per square meter shall not exceed 1450 w. assume inner wall surface temperature of 1200°c and outer surface temperature of the insulation to be 15°c. calculate the thickness of insulation required.

Answers: 3

You know the right answer?

A worker-machine operation was found to involve 3.3 minutes of machine time per cycle in the course...

Questions

question

Chemistry, 22.01.2020 06:32

Which of the following would not be a conversion factor for mole to mole calculations for the following reaction: 2al 3cl2 --> 2alcl3?...

question

Social Studies, 22.01.2020 06:32

Acollection of pitches arranged sequentially in ascending and descending order constitutes a: a) scale. b) triad. c) chord....

question

Social Studies, 22.01.2020 06:32

Ebbinghaus' use of nonsense syllables to study memory led to the discovery that: a. the amount remembered depends on the time spent learning. b. worki...

question

Business, 22.01.2020 06:32

U. s. businesses claim that unethical business practices are common outside the u. s.true or false?...

question

Biology, 22.01.2020 06:32

When avery and his colleagues had obtained the transforming factor from the iiis virulent cells, they treated the fraction with proteases, ribonucleas...

question

Mathematics, 22.01.2020 06:32

Molly is having her birthday party at pizza party palace. the costs involved are listed below. pizza party palace requires a 10% deposit prior to the...

question

Biology, 22.01.2020 06:32

The hypothalamus controls secretion by the anterior pituitary by...

question

Social Studies, 22.01.2020 06:32

Which of these terms is defined as the customs, beliefs, social norms, and material traits of a racial, religious, or social group? a. national...

question

Biology, 22.01.2020 06:32

What pigment molecule absorbs blue and red light to provide energy for photosynthesis...

question

Social Studies, 22.01.2020 06:32

John and darrin always welcomed lee when he sat with them during luch. one day john and darrin ignored lee when he sat down because they were having a...

question

English, 22.01.2020 06:32

Aletters to the chaiman of your local government area or any government agency requesting some amenities needed in your community not less than 300 wo...

question

Biology, 22.01.2020 06:32

The formation of atp in a muscle cell is an reaction, whereas using atp for contraction is an reaction...

question

Mathematics, 22.01.2020 06:32

Amy drives her car until the gas gauge is down to 1/8 full, then she fills the tank to capacity by adding 14 gallons. what is the capacity of the gas...

question

Chemistry, 22.01.2020 06:32

Write the lewis structure for the product that forms when boron trifluoride combines with ammonia. remember to show all non-zero formal charges and al...

question

Social Studies, 22.01.2020 06:32

You were a senator from a northeastern state in september 1990. because you expected to be reelected in the upcoming november election, you proposed a...

question

Mathematics, 22.01.2020 06:32

Sarah paints a straight line. the line is 13 1/2 ft long. she wants to divide the line into sections that are each 18 ft long.how many sec...

question

Social Studies, 22.01.2020 06:32

Imagine a shopkeeper who is honest because being honest is good for business. when the shopkeeper refrains from cheating a customer, kant would say th...

question

Social Studies, 22.01.2020 06:32

Give the 5 w's and h about watergate the reporters who followed the story, and the newspaper who employed them....

question

Business, 22.01.2020 06:32

Hedge funds are low risk because they are market-neutral. low risk if they buy treasury bonds. low risk because they hedge their investments. high ris...

question

Law, 22.01.2020 06:32

The norris-laguardia act effectively declared a national policy permitting employees to organize....

More questions: Engineering Another questions

Questions on the website: 13722367