A transformer of 100% efficiency has 200 turns in the primary coil and 40000 turns
A transformer of 100% efficiency has 200 turns in the primary coil and 40000 turns in secondary coil. It is…
7 years ago
Alternating Current
In an electrical circuit R,L,C and an AC voltage source are all connected in series.
In an electrical circuit R,L,C and an AC voltage source are all connected in series. When L is removed from…
7 years ago
If in a L-R series circuit the power factor is 1/2 and R=100Ω, then the value of L is,
If in a L-R series circuit the power factor is 1/2 and R=100Ω, then the value of L is, when…
7 years ago
The self-inductance of a choke coil is 10 mH. When it is connected with a 10 V DC source,
The self-inductance of a choke coil is 10 mH. When it is connected with a 10 V DC source, then…
7 years ago
The power factor of an AC circuit having resistance R and inductance L connected
The power factor of an AC circuit having resistance R and inductance L connected in series to an AC source…
7 years ago
An air core coil and an electric bulb are connected in series with an AC source.
An air core coil and an electric bulb are connected in series with an AC source. If an iron rod…
7 years ago
For a series L-C-R circuit, the rms values of voltage across various components
For a series L-C-R circuit, the rms values of voltage across various components are Vʟ=90 V, Vᴄ=60V and Vʀ=40 V.…
7 years ago
Alternating current is transmitted to distant places at
Alternating current is transmitted to distant places at Options (a) Low voltage and high current (b) Low voltage and low…
7 years ago
The primary of a transformer when connected to a dc battery of 10 volt draws a current
The primary of a transformer when connected to a dc battery of 10 volt draws a current of 1mA. The…
7 years ago
If an A.C. mains supply is given to be 220 V, what would be the average e.m.f.
If an A.C. mains supply is given to be 220 V, what would be the average e.m.f. during a positive…
7 years ago