Why choke coil is not used in DC circuit?

The choke coil can be used only in ac circuits, not in dc circuits, because for dc(ω=0) the inductive reactance XL=ωL of the coil is zero, only the resistance of the coil remains effective which too is almost zero.

Why is a choke coil better than a rheostat for controlling AC current?

Choke coil is preferred over resistance in ac circuit this is because, large value of self inductance of choke coil. and hence, the power dissipation for a choke coil is 0. That’s why, A choke coil is preferred to a rheostat in ac circuit as it consumes almost zero power.

What do you mean by choke coil?

Definitions of choke coil. a coil of low resistance and high inductance used in electrical circuits to pass direct current and attenuate alternating current. synonyms: choke, choking coil. type of: coil. reactor consisting of a spiral of insulated wire that introduces inductance into a circuit.

What is the effective resistance of a choke coil?

5Ω
A choke coil is needed to operate an arc lamp at 160V (rms) and 50Hz. The arc lamp has an effective resistance of 5Ω when running at 10A (rms).

What is ideal choke coil?

low resistance and high inductance.

What is inductance of choke?

A choke, also known as an inductor, is used to block higher-frequency while passing direct current (DC) and lower-frequencies of alternating current (AC) in an electrical circuit. The name comes from blocking, or “choking”, high frequencies while passing low frequencies.

What is the power factor of choke coil?

zero
Complete step by step answer: , the power factor of a good choke coil is virtually zero i.e, cosϕ=0. Also, choke coils are used in electrical circuits to limit current.

What are the uses of choke?

What are the application of choke?

Although they provide a very specific function, choke coils can be utilized in a broad range of applications including: power generation, in order to protect power lines from electromagnetic interference (EMI) or radio frequency interference (RFI); automotive, for use in engine applications; electronics, to protect …