Eddy currents are used in
Eddy currents are used in Options (a) Induction furnace (b) Electromagnetic breaks (c) Speedometers (d) All of these Correct Answer:…
8 years ago
Questions
The wing span of an aeroplane is 20 m. It is flying in a field where the vertical
The wing span of an aeroplane is 20 m. It is flying in a field where the vertical component of…
8 years ago
An electric motor runs on DC source of emf 200 V and draws a current of 10 A.
An electric motor runs on DC source of emf 200 V and draws a current of 10 A. If the…
8 years ago
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…
8 years ago
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…
8 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…
8 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…
8 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…
8 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…
8 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.…
8 years ago