Lisbon Quiz 4
Lisbon Quiz Challenge
Test your knowledge with our engaging quiz focused on various engineering, physics, and technical concepts related to Lisbon! Challenge yourself and expand your understanding in a fun, interactive way.
Quiz Highlights:
- Multiple-choice questions on diverse topics
- Assess your understanding of key concepts
- Engaging format suitable for all levels
The hybrid diferencing scheme used to approximate the steady-state one-dimensional convection-diffusion equation:
Leads to false diffusion whenever the Peclet number is smaller than 2
Is first order accurate in delta x, if the Peclet number is maintained always smaller than 2
Is bounded and produces physically realistic solutions
Is less accurate than the upwind scheme for Peclet numbers greater than 2
Two capacitors are identical. They can be connected in series or in parallel. If you want the smallest equivalent capacitence for the combination, how should you connect them?
In series
In parallel
Either way because both combinations have the same capacitance
A proton is released from rest point A in a uniform electric field that has a magnitude of 10.0 x 10^4 V/m. The proton undergoes a displacement of magnitude d=0.40 m to point B in the direction of E. Find the speed of the proton after completing the displacement.
3,5x10^6 m/s
5,0x10^6 m/s
2,8x10^6 m/S
6,7x10^6 m/s
For thermosets, the welding process may be
Ultrassonic welding
Plastic welding
Molecular material bonding
None of the above
An operational amplifier has?
High-gain
Low-gain
No-gain
Consider a single mass double spring (in parallel) system. Compared with a single mass single spring system, for the same mass, the same spring constant and the same mass displacement, the force is ___________ and the total elastic potencial energy accumulated is _________.
The same, the same
The same, two times higher
The same, four times higher
Two times higher, two times higher
Two times higher, four times higher
Four times higher, four times higher
In a shell and tube heat exchanger the heat exchanged allways increases with the number of flow shell passes.
True
False
Determine the roll rate, for a car assuming his track = 1500 mm, tyre vertical stifness = 200 N/mm, and wheel center rate = 200 N/mm
112500 Nm/deg
1963 Nm/deg
112300 Nm/rad
1970 Nm/rad
None of the above
Your vehicle is presented for technical inspection with a set of tires whose threads are 2.3 mm deep. Is it rules compliant?
Yes
No
The main difference between (Al) of 7075 over 6075 is its
Carbon content
Zinc content
Silicon content
Wrought forming
While changing from dry to wet tires which amount of time is added to the team’s total time for endurance?
Any time in excess of ten minutes without driver change, or thirteen minutes with driver change is added
No time is added for changing tires if the team is obligated to do it
All the time the team took to change the tires is added
Any time in excess of eleven minutes without driver change, or fourteen minutes with driver change is added
If the weather condition changes to dry, no time is added for changing to wet tires
Which of these can not be used to produce an orange LED?
GaASP
AlGaInP
GaN
GaP
Your self-developed electronic control module needs 200ms to safely shut down and write back data into nonvolatile memory. How big would the power regulator output capacitance need to be at least to do that in the event of a unexpected shutdown (GLV Master switch turn-off), given that: + The device needs a constant current of 120mA + The regulated voltage is 5V + The CPU will brown-out at 3.8V + There is no reverse-flow back into the supply
47 µF
220 µF
2000 µF
20000 µF
17.5 mF
1.2 F
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