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Due to its inductive reactance (its opposition to a.c. current).
Wiki User
∙ 10y ago
A choke coil, also known as a ballast, limits the current to a fluorescent tube by providing a high impedance to the flow of current. This high impedance restricts the current flowing through the tube, allowing it to operate within its required current range. The choke coil also helps regulate the starting voltage and stabilize the operation of the tube.
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Why choke coil is used in tube light?
To limit the current through the lamp when the gas ionises and conducts.
Can a 12vac coil be operated by 24vdc?
no, in an ac circuit the coil provides impedance but the DC coil needs some resistance to limit the current
What is quality factor for choke coil?
the quality factor for choke coil is impedence divided by resistance in a given circuit
What is the difference between current coil and voltage coil?
These terms apply to the coils inside a wattmeter. 'Pressure coil' is an archaic term for 'voltage coil', which is connected in parallel with the supply, while the 'current coil' is connected in series with the load.
What is electric choke?
The choke enriches the mixture for start-up and then is heated by a small electrical heating coil so the choke goes off when the engine is at operating temperature.
Why choke coil is used in tube light?
To limit the current through the lamp when the gas ionises and conducts.
What is choke coil?
A choke coil is an inductor, which is designed to block a particular frequency in an electrical circuit while passing signals of very less frequency or direct current.
What is ideal choke coil?
An ideal choke coil has only inductance. It has zero resistance and no stray capacitance, therefore no resonances.
Can a 12vac coil be operated by 24vdc?
no, in an ac circuit the coil provides impedance but the DC coil needs some resistance to limit the current
Can choke replaced by a resistor in fluorescent lamp circuit?
fluorescent lamp work on the principle of ionizing the gas , which requires very high potential difference . this excess voltage is provided by the choke coil . when the starter breaks the circuit , current suddenly drops , thus to maintain the current the choke coil a very high voltage is supplied by the choke coil . this very high voltage cannot be obtained from a resistor or a rheostat , since it being a linear element , thus it cannot be a replacement for choke.
What is quality factor for choke coil?
the quality factor for choke coil is impedence divided by resistance in a given circuit
What are the parameters of choke coil?
inductance and resistance are the parameters of the choke cil
What are design equations of a choke coil?
nebonda
What are the applications of choke coil?
choke coils are various depend upon the specifications it built....for example if u take 0-5 amp choke coil it is used in household applications like for florescent lamps....
What is the difference between current coil and voltage coil?
These terms apply to the coils inside a wattmeter. 'Pressure coil' is an archaic term for 'voltage coil', which is connected in parallel with the supply, while the 'current coil' is connected in series with the load.
Why the current coil of wattmeter has more thikness wire than pressure coil?
Current coil carries the current.
What is current coil and voltage coil?
The current coil is one through which the current of source can pass. This coil is connected in series. The voltage coil is connected parallel to the applied voltage. In the current coil the quantity of current flowing is proportional to the current flowing in load while in the voltage coil, current flowing is proportional to applied supply voltage. The voltage coil current is independent of current flow in load. For a complete understanding, please refer to a watt meter diagram.
