Interested to Buy Any Domain ? << Click Here >> for more details...
Why Transistors are not used as switching devices?
- 15 Answers
- 31008 Views
- I also Faced
- E-Mail Answers
Answer Posted / biraj kundu
transistor are mainly current driven whle for switching are
done at high frequency and high voltage. thus devices like
SCR,IGBT,MOSFET,etc are used.
transistors are employed in small ckts
| Is This Answer Correct ? | 3 Yes | 5 No |
Post New Answer View All Answers
why Lightning arrestor are made by 2 seperate stack of inslutor but why cvt are in single stack of insulator.
1. What is differential relay? How it operates? 2.How to calculate the Short Circuit Impedance in Transformer? 3.What is the alternate solution for testing of polarity by using polarity tester while its milli ammeter does not works? 4. While testing the 33KV Busbar by using Hipot kit, what should be the test voltage we have to apply? 5. What is the procedure/activities to be taken to inject the current more than 2000A by using 2000A Loading Transformer? 6. Explain how you can give the overload setting to any Motor Protection Relay for a HT motors with formula and example? 7. Why restricted earth fault protection is needed? Why can’t differential Protection is sufficient? 8. What should be the minimum and maximum ohmic value for earthing? 9. Why DC Currents are not used in transformer? 10. What is the Frequency while we step up the voltage from 220V to 11KV? Is it possible? Explain it?
According to IEC60034-14, When the vibration monitoring system required for motor Bearing. above which KW, it is required? and for what type of bearing the vibration probe is provided.
WHAT IS THE FUNCTION OF SHORT CIRCUIT MAINTENANCE CT
Is there any Institution for giving M-tech in Electrical engineering for those who r in service? Give the details please.
why US countries maintains 110v and 60HZ
I have an existing old MCCB. ABB Model SACE, the rating are: Ue = 660 volts, Iu =1250 Amps, 3 poles, Ith (max) =800 amps at 45 deg C. I need a circuit breaker for my 3 phase motors, 380 volts 60 hz. the supplier required the minimum ampacity of the breaker to be 911 amps. can i use this breaker with rating of Iu =1250 amps but Ith = 800amps maximum?
where solid grounding and where grounding through ngr done and why?
Formulae for calculating the transmission line losses for different voltage levels
why ht cable end termination don't have a gland?
How we can change the direction of rotation of Induction motor? Prove it using graphical
how could we know the size of cable by physical view?
What is the difference between a verilog task and verilog function?
I am shobana from Chennai. I am having my personal interview on 19th Dec at Chennai.kindly mail me the questions to mail id shobana.shanthi@gmail.com
What is phase cross over frequency?
