How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask akch2002 Your Own Question

akch2002
akch2002, Engineer
Category: Homework
Satisfied Customers: 2825
Experience:  Home work expert
46493125
Type Your Homework Question Here...
akch2002 is online now
A new question is answered every 9 seconds

The tuned circuit of FIGURE 3 has a Q-factor of 1000 and is

Customer Question

The tuned circuit of FIGURE 3 has a Q-factor of 1000 and is designed to
resonate at 1 MHz. At resonance the supply current, I, is measured as
15 μA for a supply voltage, Vs, of 2.5 V. The load resistor RL is 10 kΩ.
(a) Calculate the bandwidth and half-power frequencies of the tuned
circuit.
(b) If C is set to 1 nF calculate the values of R and L.
(c) Estimate the impedance offered to the supply at resonance and at the
frequencies of ± 2% from resonance (use a ‘narrow-band’
approximation to find the impedance of the L-RC circuit).
Submitted: 2 years ago.
Category: Homework
Expert:  R.R. Jha replied 2 years ago.
Hi,

Thanks for asking. Could you please attach the figure referred to in the question?


Regards
Customer: replied 2 years ago.

graphicgraphic

Hi,

 

having trouible uploading and is a jpeg file less than 1mb

 

which sites can i use

Expert:  R.R. Jha replied 2 years ago.
Image came through. I'd review it and let you know.
Customer: replied 2 years ago.
Hi have you answered the question as it state waiting for my response
Expert:  R.R. Jha replied 2 years ago.
Hi,

Apologize for the dealy, as I've been travelling and out of station. I'd opt out for time being and open this to others.


Regards
Expert:  akch2002 replied 2 years ago.
If you wish, I can reply this question. I am asking you as you didn't upload figure in the other thread where I had shown intention to solve this problem.
Customer: replied 2 years ago.

Hi Akch,

 

yes please answer the question.....the thread you sent me wouldnt load and i couldnt reply

 

Expert:  akch2002 replied 2 years ago.
Thanks. I will to reply it today.
Expert:  akch2002 replied 2 years ago.
Here are answers.
word file
Kindly ACCEPT the answers. BONUS and POSITIVE feedback will be appreciated.
akch2002, Engineer
Category: Homework
Satisfied Customers: 2825
Experience: Home work expert
akch2002 and 4 other Homework Specialists are ready to help you
Expert:  akch2002 replied 2 years ago.
Kindly ask if you require any clarification.
Customer: replied 2 years ago.

FIGURE 5 shows an ideal autotransformer (k = 1 and no power losses). (a) Apply Kirchhoff’s laws to write down two equations to express the voltages V1 and V2 in terms of the self and mutual voltages induced across the two coils. (b) Hence obtain an expression for the voltage ratio V1 for the condition V2 L1 = 4L2. (c) Determine the supply voltage and current with a 10 Ω load carrying 100 A and L1 = 4L2.

Expert:  akch2002 replied 2 years ago.
Thanks for your request. Kindly upload the figure.
Customer: replied 2 years ago.

Attachment: 2012-08-21_121705_figure_5_shows_an_ideal_autotransformer.docx


 


Can you let me know if this has worked, thanks.

Expert:  akch2002 replied 2 years ago.
Thanks. I have got the figure and will try to reply asap.
Customer: replied 2 years ago.

Good news, thank you.

Expert:  akch2002 replied 2 years ago.
Welcome
Expert:  akch2002 replied 2 years ago.
I will try to reply today. Thanks.
Expert:  akch2002 replied 2 years ago.
Here are answers.
word file
Kindly rate the answers. BONUS will be appreciated.
akch2002, Engineer
Category: Homework
Satisfied Customers: 2825
Experience: Home work expert
akch2002 and 4 other Homework Specialists are ready to help you
Customer: replied 2 years ago.

Hi, in part (b) can you show me more detail/working out on how you got to jwL2(9I1-3I2) please. I folloe the I parts but how did you eliminate the rest. Thanks

Expert:  akch2002 replied 2 years ago.
Here it is 11.30PM now. I will reply tomorrow.
Expert:  akch2002 replied 2 years ago.
THIS ANSWER IS LOCKED!
You can view this answer by clicking here to Register or Login and paying $3.
If you've already paid for this answer, simply Login.
Customer: replied 2 years ago.

thanks for the explanation.


For V1: i understand the inclusion of L1, K - mutual inductance, L2 but dont understand where the last part of the equation (jwMI1 - mutual inductance) comes from.


Also for V2: why is the RL not taken into account?


 


Thanks

Expert:  akch2002 replied 2 years ago.
THIS ANSWER IS LOCKED!
You can view this answer by clicking here to Register or Login and paying $3.
If you've already paid for this answer, simply Login.

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
< Last | Next >
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, NC
  • Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around. Esther Woodstock, NY
  • Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know. Robin Elkton, Maryland
  • He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here. Diane Dallas, TX
 
 
 

Meet The Experts:

 
 
 
  • Manal Elkhoshkhany

    Tutor

    Satisfied Customers:

    4520
    More than 5000 online tutoring sessions.
< Last | Next >
  • http://ww2.justanswer.com/uploads/BU/BusinessTutor/2012-2-2_115741_Kouki2.64x64.jpg Manal Elkhoshkhany's Avatar

    Manal Elkhoshkhany

    Tutor

    Satisfied Customers:

    4520
    More than 5000 online tutoring sessions.
  • http://ww2.justanswer.com/uploads/LI/lindaus/2012-6-10_04811_IMG20120609164157.64x64.jpg Linda_us's Avatar

    Linda_us

    Finance, Accounts & Homework Tutor

    Satisfied Customers:

    3121
    Post Graduate Diploma in Management (MBA)
  • http://ww2.justanswer.com/uploads/ComputersGuru/2010-02-13_051118_Photo41.JPG LogicPro's Avatar

    LogicPro

    Engineer

    Satisfied Customers:

    3035
    Expert in Java C++ C C# VB Javascript Design SQL HTML
  • http://ww2.justanswer.com/uploads/lanis/2009-4-1_233717_phput9xef_c1pm.jpg Lani S.'s Avatar

    Lani S.

    Tutor

    Satisfied Customers:

    2457
    Registered Nurse, Internet Researcher, Private Tutor
  • http://ww2.justanswer.com/uploads/chooser77/2009-08-18_162025_Chris.jpg Chris M.'s Avatar

    Chris M.

    M.S.W. Social Work

    Satisfied Customers:

    2341
    Master's Degree, strong math and writing skills, experience in one-on-one tutoring (college English)
  • http://ww2.justanswer.com/uploads/JawaadAhmed/2009-6-27_12137_SIs_SHadi.jpg F. Naz's Avatar

    F. Naz

    Chartered Accountant

    Satisfied Customers:

    1975
    Experience with chartered accountancy
  • http://ww2.justanswer.com/uploads/JK/jkcpa/2011-1-16_182614_jkcpa.64x64.jpg Bizhelp's Avatar

    Bizhelp

    CPA

    Satisfied Customers:

    1873
    Bachelors Degree and CPA with Accounting work experience
 
 
 

Related Homework Questions