When an inductor tunes at 200 KHz with 624 pF capacitor and
at 600 KHz with 60.4 pF capacitor then the self capacitance
of the inductor would be
a) 8.05 pF b) 10.05pF c.) 16.01pF d.) 20.01pF
Answer Posted / rs90
the inherent self-capacitance of the inductor coil will be
in parallel with its inductance..so in a tuned circuit this
capacitance will be in parallel with the given external
capacitor..so the resultant capacitance is the sum of these two.
Let the resultant capacitance in the first and 2nd case be
C1 and C2 resp.Since the resonant frequency is inversely
proportional to sqrt(LC) and L being same in both cases..we
can write
C1/C2 = (f2)² /(f1)²
where C1=624 pF C2=60.4 pF f1=200 KHz f2=600 KHz
Solving we get C1/C2=9
now C1=624 + x
C2=60.4 + x
x=self capacitance
put these in above eqn to get x= 10.05
Is This Answer Correct ? | 10 Yes | 1 No |
Post New Answer View All Answers
In Telecom, While call set up what are the Masseges will flow from all network element to each other.
Define pulse width modulation?
Explain what is the tri state of a signal?
which transform is better? haar or hadamard
What are the main components of AMF panel. Is it required to use ATS in LT panel if DG is used as stand by supply? Please send any single line diagram showing AMF & LT panel etc., if possible please send to sreenu_207 @ yahoo.co.in
define why diodes are not operated in the breakdown region in rectifiers?
i done m.e communication system degree. i like to study new degree. which course is to choose. i selected m.sc applied psychology, m.sc e&i. is this suitable for me or say some suggestion to do some course.
How to measure 4-20 mA in the live Ckt. r when the equipment is working ( example VFD, PLC).& 4-20mA used in maximum all ckts.
What is a p-n junction diode? State and explain some of its applications.
Explain the use of ranging and radar?
State the differences between fir and iir filters?
which modulation will be suitable for transmitting audio file? is there any transformation needed for transmission?
what is associate law?
How will you connect a waveguide to a coax?
Please send BSNL TTA Question Answer