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ENG 1101- Week 08 Flashcards | StudBud
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ENG 1101- Week 08
ENG 1101- Week 08
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Flashcards
15 cards
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Practice quiz
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Questions
15
Answers
1
How many people died in the Lac Megantic rail disaster?
4
470
No one died
47
2
How can you challenge your base assumptions?
All of the above
Pretend as though something else happened instead
Pretend like another assumption is true
Pretend like they are not true
3
If you are ever stumped, it is a good idea to…
Redefine the problem
Challenge your base assumptions
Repeat the fact-finding process
Keep brainstorming
4
How are ROM estimates made?
Based on minimal information
Based on high-level information
Based on future estimates
Based on previous projects
5
Transportation safety board (TSB) blamed the railway for not properly training crews in the first place.
False
True
6
Railway rules require that…
Trains only operate at night
At least two engineers review all the tests prior to leavingthe site
Hand brakes alone must be capable ofholding the entire train
The air pressure is less than the retarding force
7
Enrico Fermi is famous for …
Calculating the exact number using the laws of physics
Making fast but inaccurate estimations
Making rapid and approximate estimations with little given information
Making exact estimations with little given information
8
The Pareto analysis States that by doing 80% of the work, you generate 20% of the benefit.
True
False
9
What was a red flag which the engineer should not have ignored?
The train was on fire
Only half of the brakes were properly functioning
The train was moving at 1 cm/hr
There was smoke coming from the lead locomotive
10
What caused Lac-Megantic to go up in flames?
6 million litres of crude oil from the train
A spark in the system
All of the above
It crashed into an oil factory
11
Why did Dr Webber triple the number of solar panels?
The sun is unreliable
The sun does not shine at night
All of the above
Solar energy is not as effective as hydroelectrical energy
12
When the detailed design for your project is done, which estimate can be defined?
All
ROM
Budgetary
Definitive
13
With budgetary estimates, you should expect to have a variation of:
-5% to +10%
-15% to +25%
±25%
±15%
14
What type of estimation was discussed in the video?
Definitive estimate, -5% to +10%
All of the above
Budgetary estimate, -15% to +25%
Rough order of magnitude (ROM), -25% to +75%
15
Why are Fermi problems quite accurate?
Because we can rely on laws of physics
Because we are usually good at making estimates
Because the overestimates and underestimates balance each other out
Because we can use a calculator
