Multiple Choice @ DTU by Nina Rathlev Andersen https://padlet.com/ninakathrine/MCQ LearningLab Workshop - create multiple choice questions in the One Best Answer or Extended Mathing Item format en-us 2017-06-07 07:54:54 UTC 2023-02-22 23:47:35 UTC hello@padlet.com https://padletuploads.blob.core.windows.net/prod/204012798/63f967dabbf433aa2de6714261df575a/correct.png NBMEs Item writing manual ninakathrine https://padlet.com/ninakathrine/MCQ/wish/175540884 2017-06-07 11:17:20 UTC https://padlet.com/ninakathrine/MCQ/wish/175540884 Mass balances https://padlet.com/ninakathrine/MCQ/wish/175691112 In a small village a porcelain factory is manufacturing a famous porcelain plate, which is exported all over the country and has become recently also very popular abroad. You are one of the managers of the plant and your objective is to optimize the production and especially also the storage of the produced items. One of the most important first analysis for you to do is to obtain an overview about the current state of your facilities. You want to perform therefore a material balance of your production site. 
 
Before you are beginning your analysis you must make a couple of refreshing considerations about material balances. You are asking yourself a couple of questions:
 
A material balance:
  1. Is summarizing the most important streams in and out of a system
  2. Gives an overview over the incoming material and the production (reaction)
  3. Is balancing the material flows and the reaction
  4. Balances the material flows, the production (reaction) and the storage at your production site
 
When your system is at steady state:
  1. The storage in your material balance is not  of importance anymore. The incoming and outgoing materials are in equilibration with your production
  2. Your system is in equilibrium. Your storage and production is outbalancing each other
  3. The system has reached a state, where the production in relation to storage and material flows in and out is negligible  
 
 
The following system is at steady state:


  1. 2 kg/s are consumed.
  2. 2 kg/s are stored in the system.
  3. The system can be seen as a batch reactor.
  4. The system can be seen as a fed batch reactor.
 
 
 
]]> 2017-06-08 08:40:20 UTC https://padlet.com/ninakathrine/MCQ/wish/175691112 Emptying of depression https://padlet.com/ninakathrine/MCQ/wish/175691176 A depression is emptied via a pipe to the ocean.



Which of the following is the most correct estimate for the time it takes to empty?

1. 60 s
2. 10 min
3. 120 min
4. 24 hours
5. 3 days]]> 2017-06-08 08:40:41 UTC https://padlet.com/ninakathrine/MCQ/wish/175691176 pricing strategies https://padlet.com/ninakathrine/MCQ/wish/175691544 Your company, Danzyme, is a fairly small, yet well-known, Danish manufacturer of high-quality enzymes. The product line addresses a broad scope of industry applications as well as a world-wide customer base. Competition is increasingly tough as lower-cost manufacturers are catching up with your technology. Your sales force is not only in Denmark but also in wholly-own subsidiaries. Production is based in Denmark. The current business strategy is to remain a niche-strategy producer.

According to theory, which pricing strategy would be the most suitable for Danzyme to implement?

1. Low-cost 
2. Cost plus
3. Skimming pricing
4. Psychological pricing]]> 2017-06-08 08:43:25 UTC https://padlet.com/ninakathrine/MCQ/wish/175691544 Silver alloy https://padlet.com/ninakathrine/MCQ/wish/175693697 Silver shall be alloyed with either copper or gold. Silver and gold are completely miscible in the solid state and form a solid solution, whereas silver and copper are completely immiscible in the solid state at room temperature.

Can the yield strength of silver be increased by alloying with either 0.5 wt% copper or 0.5wt% gold?

1. Yes, but only by alloying with copper

2. Yes, but only by alloying with gold

3. Yes, by alloying with either copper or gold

4. No, the yield strength cannot be increased, neither by alloying with copper nor with gold]]> 2017-06-08 08:57:49 UTC https://padlet.com/ninakathrine/MCQ/wish/175693697 Solar cell parameters https://padlet.com/ninakathrine/MCQ/wish/175694273 The following IV curve has been recorded for a solar cell. The short circuit current is 40mA and the open circuit voltage voltage is 0.7V.

Which internal parameters can we infer from the IV curve?

Rs is the series resistance, and Rsh is the shunt resistance

1. High Rs and low Rsh
2. High Rs and high Rsh
3. Low Rs and high Rsh
4. Low Rs and low Rsh]]> 2017-06-08 09:02:26 UTC https://padlet.com/ninakathrine/MCQ/wish/175694273 Lipidoxidation https://padlet.com/ninakathrine/MCQ/wish/175694815
Vi er ved at fremstille majonaise og vi er bange for at der kan ske en lipidoxidation. 

Hvilke tilsætningsstoffer skal der anvendes for at forhindre oxidationen?

A) Benzosyre og tocopherol
B) Nitrit og vit C
C) Carragenan og vit E
D) EDTA og ascorbat]]> 2017-06-08 09:07:13 UTC https://padlet.com/ninakathrine/MCQ/wish/175694815 Planck curve https://padlet.com/ninakathrine/MCQ/wish/175694915 The following Planck curve shows the intensity of a black body radiation as function of wavelength.

What can you derive from such a curve?

1. the temperature of the black body
2. the magnetic field intensity of the black body
3. the recession velocity of a star
4. the mass of the black body
5. the orbital speed of a star]]> 2017-06-08 09:08:16 UTC https://padlet.com/ninakathrine/MCQ/wish/175694915 Tema. Lokalt termisk ubehagA . TrækB. Lodret lufttemperaturdifferensC. StrålingsasymmetriD. Gulvets overfladetemperaturE. Alt er godtF. Psykosociale faktorerHvilken form for termisk ubehag er mest sandsynlig i følgende situationer? 1) I et lokale er temperaturen på indersiden af et stort vindue 10C og den modstående væg har temperaturen 20C. 2) I et lokale er målt en lufthastighed på 0,25 m/s og en lufttemperatur på 20C. 3) I et lokale er målt en overfladetemperatur på gulvet på 35C https://padlet.com/ninakathrine/MCQ/wish/175695517 2017-06-08 09:12:51 UTC https://padlet.com/ninakathrine/MCQ/wish/175695517 Varmeanlæg https://padlet.com/ninakathrine/MCQ/wish/175695912 En bygning er opvarmet med et 2-strengsvarmeanlæg med cirkulationspumpe til cirkulation af vandet til fire radiatorer med ønskede ydelser på 800 W, 600 W, 500 W og 300 W ved en udetemperatur på -12 C. Anlægget er dimensioneret for temperatursættet 60/40/20 C.

Angiv den dimensionerede vandføring for pumpen.

1. 110 kg/h
2. 95 kg/h
3. 63 kg/h
4. 47 kg/h
5. 35 kg/h]]> 2017-06-08 09:15:55 UTC https://padlet.com/ninakathrine/MCQ/wish/175695912