primary of transformer connected to Dc supply in series with
switch, and secondary connected on ammeter, what happens
when swith On and OFF. (or) if continuously On and OFF

Answer Posted / g.v.k.chowdary

change in voltage will induces the EMF in the coil, so when we switch ON and OFF frequently there will be EMF induced and it will link with the secondary and there will be deflection in the ammeter. in case continously ON or continously OFF there will be no deflection.

Is This Answer Correct ?    0 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

What kinds of decision are made about CT from it's Knee point(voltage & current)?

3814


Pls mail me utility & Dg related question with answer

1416


Why AC & DC capacitor are use in UPS ??????????????????

1594


From reading, Under voltage relay used also as phase sequence relay now, Why I use under voltage and phase sequence relay in the same circuit (ATS)?

1317


HOW TO CALCULATE THE VT SIZING?

2445






Approach of a cooling tower is the difference between temperatures of what factors?

619


TO CALCULATE THE RESISTANCE OF GRR OF HT MOTOR 400KW WHEREAS STATOR VOLTAGE 6.6KV AND ROTOR VOLTAGE 705V AND ROTOR CURRENT IS 346A.

4950


If I want to replace a 26KW Slip ring Motor with a Squirrel Cage motor & Drive (for a Hoist Application). How can I approximate the Motor & Drive HP required in new Setup.

1822


Give details of your interested designation, the post you are interested to serve the company better and explain why you think you can serve the company better in such position if employed?

2838


critically criticize the application of ring main unit in power system

1001


how to calculate the magnetizing current of ct ( 800A/1A) for Relay 64

1040


i want to know how to determine that a surge arrester work properly in 11kv system. and how to test a 12kv surge arrester

1693


1. If 8.35%Z means the percentage impedance of 132kV-line from power company, we will like to confirm its base capacity?

1545


I have 2500KVA transformer delta/star,13.8KV/380V provided with LV 4000A breaker. Already I have 2300KW motor feeder with a full load 90%. Is it possible to connect another 1600A from that breaker? If so how the calculation is done?

3373


1. What is maximum permissible distance between smoke detectors ? 2. How do we decide number of smoke detectors required in a large office, warehouse, hall etc ? 3. What should be maximum height of smoke detectors ? 4. Where do we use heat detector, optical smoke detector, temperature sensitive detector ?

2384