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Electronics and Communication Engineering - Electromagnetic Field Theory

Exercise : Electromagnetic Field Theory - Section 10
21.
Varactor diode is forward biased when it is used.
True
False
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
A good ohmic contact on a P-type semiconductor chip is formed by introducing
gold as an impurity below the contact
high concentration of donors below the contact
high concentration of acceptors below the contact
thin insulator layer between the metal and semiconductor
Answer: Option
Explanation:
No answer description is available. Let's discuss.
23.
The impurity added to extrinsic semiconductor is of the order of
1 in 100
1 in 1000
1 in 100, 0000
1 in 100, 000, 000
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
For a BJT, avalanche multiplication factor depends on
VCE
VCB
VBE
none
Answer: Option
Explanation:
No answer description is available. Let's discuss.
25.
The impurity commonly used for realizing the base region of a n-p-n transistor is
gallium
indium
boron
phosphorus
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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