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Electronics and Communication Engineering - Electromagnetic Field Theory

Exercise : Electromagnetic Field Theory - Section 10
11.
Higher value of ripple factor indicates
poor rectification
ideal rectification
r.m.s. value to peak value
none of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
12.
When a semi-conductor is doped, its electrical conductivity
increases
decreases in the direct ratio of the doped material
decreases in the inverse ratio of the doped material
remains unaltered
Answer: Option
Explanation:
No answer description is available. Let's discuss.
13.
The conduction band is
same as forbidden energy gap
generally located on the top of the crystal
generally located on the bottom of the crystal
a range of energies corresponding to the energies of the free electrons
Answer: Option
Explanation:
No answer description is available. Let's discuss.
14.
If an additional two diodes were used to connect the 1 kW load across a bridge rectifier circuits, utilizing the full secondary of the transformer, how much d.c. power could be delivered using a transformer with the rating of 105 VA?
35 W
60 W
85 W
100 W
Answer: Option
Explanation:
No answer description is available. Let's discuss.
15.
In an n channel JFET, VGS = VGS(off). Then
ID is zero
ID may be zero or positive
ID is positive
ID may be zero or negative
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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