Electronics and Communication Engineering - Networks Analysis and Synthesis

26.
The impedance of a coil above self-resonant frequency is
inductive
capacitive
resistive
none
Answer: Option
Explanation:
No answer description is available. Let's discuss.

27.
Wire-wound resistors are unsuitable for use at high frequencies because they
are likely to melt under excessive eddy current heat
exhibit unwanted inductive and capacitive effects
create more electrical noise
consume more power
Answer: Option
Explanation:
No answer description is available. Let's discuss.

28.
In figure, the tree branches are bdf. The fundamental loops include
abc, def, bdea
cea, bdea, abc
cdb, def, bfa
abde, def, cdb
Answer: Option
Explanation:
No answer description is available. Let's discuss.

29.
A function Z(s) has zero at infinity if
the degree of numerator and denominator are equal
the numerator of Z(s) is one degree higher than denominator
the denominator of Z(s) is one degree higher than numerator
the degree of numerator and denominator are either equal or differ by one
Answer: Option
Explanation:
No answer description is available. Let's discuss.

30.
If f1 and f2 and half-power frequency and f0 be resonant frequency, the selectivity of R-L-C series circuit is given by
(f2 - f1)/2f0
(f2 - f1)/f0
(f2 - f0)/(f1 - f0)
(f2 - f1)/(f1 - f0)
Answer: Option
Explanation:
No answer description is available. Let's discuss.