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Electronics and Communication Engineering - Electromagnetic Field Theory

Exercise : Electromagnetic Field Theory - Section 10
31.
Which of the following materials has the highest electrical conductivity?
Steel
Silver
Aluminium
Zinc
Answer: Option
Explanation:
No answer description is available. Let's discuss.
32.
In a bipolar transistor
the base is thick and highly doped
the base is thin and highly doped
the base is thick and lightly doped
the base is thin and lightly doped
Answer: Option
Explanation:
No answer description is available. Let's discuss.
33.
Hay bridge is suitable for measuring inductance of which one of the following inductors?
Having Q value less than 10
Having Q value greater than 10
Having any value of Q
Having phase angle of reactance very large
Answer: Option
Explanation:
No answer description is available. Let's discuss.
34.
When a substance is repelled by a magnetic field it is known as
ferromagnetic
antiferromagnetic
diamagnetic
paramagnetic
Answer: Option
Explanation:
No answer description is available. Let's discuss.
35.
If μn is mobility of free electron and μp is mobility of holes then for silicon at 300 K
μn = μp
μn > μp
μn < μp
μn may be more or less than μp
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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