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Electronics and Communication Engineering - Electromagnetic Field Theory

Exercise : Electromagnetic Field Theory - Section 7
1.
Lowest resistivity of the following is
constantan
german silver
manganin
nichrome
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.
Peak inverse voltage will be highest for
half wave rectifier
full wave rectifier
bridge rectifier
three phase full wave rectifier
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.
In CE configuration, the output characteristics of a bipolar junction transistor is drawn between
IC and VCB
IE and VCB
IC and VCE
IE and VCE
Answer: Option
Explanation:
No answer description is available. Let's discuss.
4.

Assertion (A): The reverse current in a p-n junction is nearly constant.

Reason (R): The reverse breakdown voltage of a p-n diode depends on the extent of doping.

Both A and R are true and R is correct explanation of A
Both A and R are true but R is not a correct explanation of A
A is true but R is false
A is false but R is true
Answer: Option
Explanation:
No answer description is available. Let's discuss.
5.
An n type semiconductor is illuminated by a steady flux of photons with energy greater than the band gap energy. The change in conductivity Δσ obeys which relation?
[ Here, e is the electron charge, μn electron mobility, μp hole mobility, Δn (Δp) is the excess electron (hole) density ].
Δσ = 0
Δσ = e(σn + σp) Δn
Δσ = e(μnΔn - μpΔp)
Δσ = e μnΔn
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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