I have 2 KW electric water heater.I am gonna use it in controlling water temp.so I needed to increase or decrease the heating capacity.is there any electrical-electronic circuit for varying the resistance & so current?

3354

What is the effect on power factor, shown by a trivector meter; incase of reverse phase sequence. If the power factor of a system is lag what meter will show in case of reverse phase sequence connected to the meter. and What in case of lead.

2371

Can any one know what are the symbols at the down (below) the analog ammeter??? there are 4 symbols which are they ?????

1958

there is an alternator 480 k.w, 400v,50hz, 4-wire running on load having leakage alternator body earthed current 38 A. is it within acceptable limit? if yes then give reference if no then how to bring within specified limit

1980

Hi guys! Plz help me to answer the following questions. 1. What are the types of transmission line energy losses? 2. Why are the VLF are used some types of services? 3. What frequencies are used for reliable beyond the horizon terrestrial communication without repeaters? 4. To permit selection of 1 out 16 equi-probable, what is the number of bitis required? 5. What is the most common modulation used for telegraphy? 6. What is the multiplexing is used to increase the capacity of the optic fiber? Thanks

2138

After completing iti in electrician, how can i get certificate of electrical supervisor? What ia requirements. For it?

1871

hello everybody. what does an abnormal stator winding impedance or dc resistance show? thanx

1964

how calculate gd2 of ht motors

2361

Why syn. Generators are used for the production of electricity?

1205

what is submersible pump?what is different between motor and sub motor?

2119

Explain in brief description about the operation of DG sets.

2499

Hi everyone. Some Generators uses 3-Pole breakers with extra contactors for Neutral. Some uses 4-Pole. Why so? What is the idea behind this? Thanks in advance for the solution. Kr.

2120

In a carnot engine with an efficiency of 40%, the heat rejected to the sink at 27 C is 60 kJ, then the heat supplied in kJ to the engine by the sources is

1119

determine two methods to find loose connection in operational electrical system?

1742

what is your majour contributions in your present job

1902