|
INTERVIEW QUESTIONS
COMPUTER HARDWARE
ELECTRONICS
DETAILS
Question: The current through a resistor of 50 ohms in an AC circuit at t = 0.008 s is 65% of the peak value. The smallest possible frequency of the generator delivering the current is
Answer: If it is then this is easy, you take the arcsine of 65% that gives you what angle you are at in the sine cycle, take the ratio of that to 360, and multiply that by 8mS to get the time of a full cycle, and then take one over that to get frequency. This will be the lowest frequency. Note that the 50 ohms has nothing to do with it, other than implying it is an RF circuit where 50 ohms is common. You say "smallest possible frequency" which also is not very clear I will assume you mean lowest frequency. There is no highest frequency you can meet this requirement with an arbitrarily high frequency.
|
|
|
Category |
Electronics Interview Questions & Answers -
Exam Mode /
Learning Mode
|
Rating |
(0.2) By 8474 users |
Added on |
9/17/2014 |
Views |
69361 |
Rate it! |
|
|
Question:
The current through a resistor of 50 ohms in an AC circuit at t = 0.008 s is 65% of the peak value. The smallest possible frequency of the generator delivering the current is
Answer:
If it is then this is easy, you take the arcsine of 65% that gives you what angle you are at in the sine cycle, take the ratio of that to 360, and multiply that by 8mS to get the time of a full cycle, and then take one over that to get frequency. This will be the lowest frequency. Note that the 50 ohms has nothing to do with it, other than implying it is an RF circuit where 50 ohms is common. You say "smallest possible frequency" which also is not very clear I will assume you mean lowest frequency. There is no highest frequency you can meet this requirement with an arbitrarily high frequency. Source: CoolInterview.com
If you have the better answer, then send it to us. We will display your answer after the approval.
Rules to Post Answers in CoolInterview.com:-
- There should not be any Spelling Mistakes.
- There should not be any Gramatical Errors.
- Answers must not contain any bad words.
- Answers should not be the repeat of same answer, already approved.
- Answer should be complete in itself.
|
|
Related Questions |
View Answer |
|
What is the significance of "4-20 mA" signal in hart protocol?
|
View Answer
|
|
Is it possible to build an AC or DC variable-speed generator with a variable field current, controlled by a signal from a torque sensor connected to the shaft of the generator (i.e., net torque = 0)?
|
View Answer
|
|
Do you have any ideas how to make a ping-pong ball launcher that reloads automatic and shoots automatically?
|
View Answer
|
|
What are encoder and the decoder? What are the uses of these two devices? Also, write about how it works with circuit diagram.
|
View Answer
|
|
What do mean by "flow of electron"?
|
View Answer
|
|
Why does charging batteries take lengthy periods? What can be done to quicken the speed?
|
View Answer
|
|
Is it possible to reverse the order of a Variable Frequency Drive? Ex: I want to be able to create 120v power from a variable speed engine, with at least 6kw of power.
|
View Answer
|
|
How can we prove that radio waves are sine waves? What makes them sine?
|
View Answer
|
|
When recording infrasound waves or microwaves how do they differ from one another? What is the best way to read them?
|
View Answer
|
|
Why do I not see the battery and capacitor combination for power backup?
|
View Answer
|
|
How do you make a memory card of mobile phone?
|
View Answer
|
|
Which type of architecture 8085 has?
|
View Answer
|
|
How many memory locations can be addressed by a microprocessor with 14 address lines?
|
View Answer
|
|
What will be the common test case for SMS and Mp3 player applications?
|
View Answer
|
|
What is the difference between TDMA and FDMA?
|
View Answer
|
|
Explain negative test cases for testing mobile phones?
|
View Answer
|
|
What is the Buffer size of transmission buffer or rectiption buffer in TM,UM and AM of RLC?
|
View Answer
|
|
What is the exactly meaning of manual testing?
|
View Answer
|
|
How to check the Mobile Battery charge status?
|
View Answer
|
|
6dB pad introduces how much attenuation?
|
View Answer
|