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Computer Science - Electronic Principles

Exercise : Electronic Principles - Section 1
36.
A dielectric material is:
a good conductor
a good insulator
a poor conductor of electrostatic fields
a good conductor of magnetic fields
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
37.
A certain electromagnet has 1000 turns of wire. How much current must flow through the coil in order to generate an mmf of 100 ampere-turns?
0.1 A
1000 A
10 A
100 A
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
38.
If a load resistance is 1 kW, a stiff current source has a resistance of
At least 10 Ohm
Less than 10 Ohm
More than 100 k Ohm
Less than 100 k Ohm
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
39.
A flashlight battery has internal resistance of 1W. For what values of load resistance does the flashlight battery appear stiff?
60 Ohm
50 Ohm
100 Ohm or more
10 Ohm
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
40.
The number of free electrons and holes in intrinsic semiconductor increases when the temperature
Decreases
Increases
Stays the same
0oC
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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