Explain the working of current commutated chopper with aid of circuit diagram and necessary wave forms. Derive an expression for its output voltage?

0 Answers  

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Difference between mobile and a cell phone.

0 Answers  

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Define what is hole current?

0 Answers  

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How many types of Transmission cards are in Ultra BTS?

0 Answers   NSN,

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Explain the different modes of buck boost converter

0 Answers  

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What is meant by IMSI, TMSI, IMEI and MS-ISDN? Why they are needed?

1 Answers  

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What are the causes of failure of mosfet in an high frequency application?

2 Answers  

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describe the functioning of parallel adder ? what are the adventages of parallel adder over series adder?

0 Answers  

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Q.1. What do you mean by FDMA? Explain in details. Q.2. What are active & passive elements in BTS? Q.3. Name the equipments required for 2+2+2. Q.4. What is the function of BB2F card? Q.5. What is the function of BOI card? Q.6. Which modulation we use in case of GPRS? Q.7. Which slot is reserved for GPRS? Q.8. What is the height of BTS? Q.9. What is the height of ESMA card? Q.10. How many maximum slots we can use in ESMA card? Q.11. We use PSWA card in which case? Q.12. We use PSWB card in which case? Q.13. How many types of Transmission cards are in Ultra BTS? Q.14. How many types of Transmission cards are in Flexi BTS? Q.15. What will happen if we change the polarity of microwave antenna? Q.16. What is the full form of ARFCN? Q.17. What is the function of TRAU? Q.18. Explain the structure of entire GSM. Q.19. Explain the configuration of 4+4+4. Q.20. Which type of connector we use in FIFA card? Q.21. Which type of connector we use at the end of GSM antenna/ Q.22. What are the different types of GSM antenna? Q.23. What do you mean by Splitter? Q.24. Convert the 16 W power into dBm. Q.25. Explain the different steps of Commissioning. Q.26. What do you mean by protection loop? Q.27. What is the correct way of weather proofing? Q.28. Can we use 7GC instead of 15GC? Q.29. What is the function of Duplexer? Q.30. What are the different elements of MSC? Q.31. Write the total description of Ultra Commissioning.

0 Answers   Nokia,

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"you r graduated as ELECTRONICS AND COMMUNCATION ENGINEER, then y u r looking for a job in IT side"?

5 Answers   Ewak, HCL, NTT Data,

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why 20logA is used as voltage gain and 10logA is used as power gain

2 Answers   ONGC,

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What is the advantage of memristor?

0 Answers  

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