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Superconductors

Quiz Number:  25
Course Name:  Industrial Technology/Engineering
Quiz N0. = 25
Teacher:  Ed Schmidt
Teacher's Home Page:  http://www.oocities.org/Baja/2140/ENG.htm
Teacher's Email:  schmidte@putnam.k12.il.us

Student Name:  
Student No:
No. of Questions= 20 ,Pass mark is - 70 %.

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1.  Superconductors have the ability to carry electrical currents without any resistance:

a) true
b) false
2.  Resistance causes electrical losses in the form of heat:

a) true
b) false
3.  Steel and aluminum are good superconductors:

a) true
b) false
4.  The critical temperature is the temperature that the resistance falls to zero:

a) true
b) false
5.  77K is the boiling point of liquid nitrogen:

a) true
b) false
6.  Lead was the first superconductor:

a) true
b) false
7.  Mercury was the first superconductor:

a) true
b) false
8.  The first superconductor was discovered in 1986:

a) true
b) false
9.  Kamerlingh Onnes discovered the first superconductor:

a) true
b) false
10.  IBM does extensive research in finding a room temperature superconductor:

a) true
b) false
11.  Several Nobel Prize winners have came about from the research of superconductors:

a) true
b) false
12.  There is truly no resistance to direct current (dc) in a superconductor:

a) true
b) false
13.  Alternating current (ac) also has a resistance of zero in a superconductor:

a) true
b) false
14.  A diamagnet is a material that can screen out magnetic fields:

a) true
b) false
15.  Superconductors are perfect diamagnets:

a) true
b) false
16.  SQUID is an acronym for Superconducting Quasar Interstate Device:

a) true
b) false
17.  SQUIDS are the most sensitive detectors of magnetic fields known:

a) true
b) false
18.  No theory has yet been devised that tells us which materials will be superconductors and at what temperature:

a) true
b) false
19.  No room temperature superconductor has yet been discovered:

a) true
b) false
20.  The first room temperature superconductor was made of ceramic material:

a) true
b) false




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