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Power Supply Test Questions


And, if you really want to know more about me, please visit my "About" Page. Like our customer base the competitive landscape is also diverse and the key competitors also vary according to the end market sector. A). When current reaches the limit, a typical CV/CC power supply will switch from CV to CC mode. More about the author

Q) Is FOC a form of sensorless control? Our major OEM customers require that their suppliers have complete control over the production process to guarantee product quality. A) No, you want to maintain the 90 degree lead angle in FOC so that you are being as efficent as possible. Such a resistor is typically rated at a low value so as to not cause excessive output voltage "sag” under load, but its resistance does serve a practical purpose. http://www.instructables.com/answers/Power-Supply-Question/

Power Supply Test Questions

Question 17 A technician is troubleshooting a power supply circuit with no DC output voltage. If each Zener has a maximum current rating of 300 mA, what should be the value of the series resistance? 10 Ω 50 Ω 25 Ω 40 Ω Answer : 2 Tracking accuracy Some power supplies with two or more outputs may have a tracking feature. They also need real, hands-on practice building circuits and using test equipment.

This question, therefore, is a prelude to further troubleshooting questions. I want this to be entirely raw, basic, cheap parts. Notes: In a filtered DC power supply, the only time current is drawn from the rectifier is when the filter capacitor charges. Commercial Power Supply Has Voltage Regulation Of Typical numbers are 500 to 1500 V.

I did build the first part on a breadboard, and with the second op-amp wired as a comparator, I found my output signal not as triangular as I was hoping for. This product also includes the ability to perform AC leakage testing and has a convenient adjustable power supply for soldering irons. The task of the component is to convert the relatively high voltage alternating current from the mains supply into stable low voltage direct current which is required by all electronic equipment. http://www.xppowerplc.com/html/about/questions.asp How do the operating voltages of a typical AC power system and a typical electronic circuit (radio, alarm clock, computer) compare?

Calculate the unloaded DC output voltage for this supply (assume 0.7 volts drop across each diode). Ac Power Supply Mcqs A) The back-EMF of the motor is estimated and can provide the rotor angle information. Q) i need board A): Further email communication will cover the board order information. Remote programming terminal: some power supplies have input terminals for a voltage or resistance that can be used to control the voltage or current output.

Mcq On Power Supply

Finally our smaller size and flexibility allows us to provide excellent service. additional hints Not the answer you're looking for? Power Supply Test Questions Germanium Silicon Carbon None of the above Answer : 2 Q16. Multiple Choice Questions On Smps For successful circuit-building exercises, follow these steps: Carefully measure and record all component values prior to circuit construction, choosing resistor values high enough to make damage to any active components unlikely.

As the junction temperature increases, the voltage breakdown point for Zener mechanism ………… Is increased Is decreased Remains the same None of the above Answer : 2 Q10. http://nuvisiongraphx.com/power-supply/power-supply-from-hell-i-cannot-get-my-custom-built-pc-to-power-on-help.html More importantly, discuss with your students why the ripple is more severe under conditions of heavy loading. Reveal answer Hide answer Let the electrons themselves give you the answers to your own “practice problems”! A disadvantage is that they are inefficient, as they are always dissipating power. Objective Question On Smps

  1. One way you can save time and reduce the possibility of error is to begin with a very simple circuit and incrementally add components to increase its complexity after each analysis,
  2. Of course, the same thing can be done with a piece of wire or a jumper wire with stackable banana plugs.
  3. The only controls are an on-off switch and a rotary switch to allow you to choose the desired output voltage.
  4. How to temporarily mark a trail?
  5. Another reason for following this method of practice is to teach students scientific method: the process of testing a hypothesis (in this case, mathematical predictions) by performing a real experiment.
  6. Learning to mathematically analyze circuits requires much study and practice.
  7. The output voltage is supposed to be 15 volts DC, but instead it is actually outputting less than 8 volts DC: The technician measures approximately 18 volts AC (RMS) across the
  8. voltage to regulated or ordinary power supply increases by 5% what will be the approximate change in d.c.

Q) Can you guarantee start rotation with FOC sinusoidal? In the above design, you can see that the transistor has Vin - Vout across it. A 100mΩ connection would thus supply 75% of the wiring resistance (as well as waste 75% of the power lost in the wiring). http://nuvisiongraphx.com/power-supply/test-power-supply-paperclip.html The SMPS takes advantage of this by chopping the AC line's waveform into lots of little pieces and changing them to a desired voltage level with a much smaller transformer.

There it seems to me that they no longer guarantee that the output will remain within 5% of the nominal value if the output is unloaded. Series Voltage Regulator Viva Questions Reveal answer Hide answer Shorted capacitor, open transformer winding (as a result of overloading), shorted diode(s) resulting in blown fuse. How would you account for this in algorithm-based sinusoidal control?

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How do you determine alignment if you don't have Hall position sensors? There is no way you will copy the design inside an IC, IC designs are wildly alien to anything you can make in discrete components, but the TOPOLOGY is what you Question 13 What will be the consequence of one diode failing open in the bridge rectifier of a single-phase power supply? Which Of The Following Statements Does Not Describe An Advantage Of Digital Technology What is XP's growth strategy?

All rights reserved Privacy Policy · Terms of Service · User Agreement REGISTER | LOGIN PROFILE | LOGOUT Sign Up / Sign In {* #signInForm *} {* signInEmailAddress *} {* currentPassword Enter your email below, and we'll send you another email. {* #resendVerificationForm *} {* signInEmailAddress *} {* /resendVerificationForm *} Verification Email Sent Check your email for a link to verify your What is the minimum load resistance that you can connect across the supply? 10 Ω 20 Ω 15 Ω 40 Ω Answer : 4 Q37. navigate to this website The reference value for id is typically 0, but for field weakening that value will often be negative to change the voltage constant of the motor.

A) The shape of the magnets and the shape of the stator windings. It's important not to exceed the specification, as you might cause dielectric breakdown of an internal component and/or exposure to hazardous voltages.