Answer Posted / tarun aggarwal ymca
all line are ac because earlier it is economical to gernate convert voltage at higher level only using transformer.since in transmission require high voltage that why maximum line are ac in transmission but now a days seeing importance of dc and due to power electronic we convert dc volatage at high voltage..so hvdc is used
| Is This Answer Correct ? | 23 Yes | 8 No |
Post New Answer View All Answers
what is the voltages using in movie theaters??? why ??why not other??
i want to run 11kv star connected motor in 6.6kv with delta connected throught inverter, is it possible?
what will happen if earth of 33 kv cable (earthed system) is not connected to earthing pit?
Difference between On Line capacitor and Station Type capacitor.
R=*ΒΆ l/a
IN induction motor pf is increased using capacitors.what will be the effect on motor and system when very large capacitor is accidently installed and pf goes leading.
for a 500 KVA connected load, I calculated 30% of capactor for power correction. Even after using 225 KVR capactor PF is not improving. What could be reason for low Phase correction factor?
The loads are connected with phase and ground then why current flow as the loads ?
When is lag lead compensator is required?
what is ratio of copper wire size and current ?
What are the reasons for the parallel operation of transformers?
What is the two pole structure?
In a power conditoining unit (inverter) of a solar plant when we measure the d.c. current fed by different strings of solar plates to inverter, the current in the negative wire is less almost by 1 ampere to the current in its positive wire say current in positive wire 5 A , then current in negative wire of the same string is 4 A. Since the current entering should be equal to current leaving then why the current is noticably less in negative wire.
Please explain the following and how these are working with PLC unit 1.I/O Module 2.I/O Device 3.Adaptor Card 4.Ribbon Adaptor 5.RS 485-FC
Damping resistor provided in open delta (tartiary) winding of a measuring PT at the incoming of a MV inverter drive panel is getting heated up. Can any body explain the reasons and suggest the remedy?