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- The series resistance (swamping resistance and multiplier) in pressure coil circuit has many turns.
- So in addition to inductance seen before, there are inter-turn capacitance also.
- If this capacitance effect exceeds the inductance effect, a phase-shift in pressure coil current will cause an error.
- When pressure coil capacitance roughly equals the inductance, the errors cancel each other.
- In most cases the inductance is more than the capacitance and thus the shunting capacitor mentioned before will serve the purpose.
What else can I help you with?
What is the difference between LC and RC filters?
LC means coil capacitance circuit RC means resistance capacitance circuit
What is ideal choke coil?
An ideal choke coil has only inductance. It has zero resistance and no stray capacitance, therefore no resonances.
Why voltage coil is called pressure coil?
It's an archaic expression, which is not usually used these days. But 'voltage' was considered to equate to 'pressure' in, say, a hydraulic system. So the term pressure (as well as 'tension') has, in the past, been used in place of 'voltage' or 'potential difference', as in 'pressure coil' or 'high-tension transmission'. In North America, a 'voltage coil' is frequently termed a 'potential coil'.
Why the current coil of wattmeter has more thikness wire than pressure coil?
Current coil carries the current.
How do you connect energy meter in circuit?
pressure coil or voltage coil across the supply and the current coil in series.
What is the difference between LC and RC filters?
LC means coil capacitance circuit RC means resistance capacitance circuit
What is ideal choke coil?
An ideal choke coil has only inductance. It has zero resistance and no stray capacitance, therefore no resonances.
What is the resonant frequency if coil of inductance is 2.5 henry and capacitance is 40 micro farad?
15.92 Hz
Why the current coil of ct having less no of turn than pressure coil?
A CT doesn't have a 'pressure coil'! Reword your question.
What is function of pressure coil in a watt meter?
A 'pressure coil' is an archaic term for a 'voltage coil' (UK terminology) or 'potential coil' (US terminology), as opposed to the 'current coil' in a wattmeter. This coil is connected in parallel with the supply, while the current coil is connected in series with the load.
Why voltage coil is called pressure coil?
It's an archaic expression, which is not usually used these days. But 'voltage' was considered to equate to 'pressure' in, say, a hydraulic system. So the term pressure (as well as 'tension') has, in the past, been used in place of 'voltage' or 'potential difference', as in 'pressure coil' or 'high-tension transmission'. In North America, a 'voltage coil' is frequently termed a 'potential coil'.
Why the current coil of wattmeter has more thikness wire than pressure coil?
Current coil carries the current.
How do you connect energy meter in circuit?
pressure coil or voltage coil across the supply and the current coil in series.
What shuts off coil and injectors?
The electronics shuts off the current to the coil and injectors are usually under pressure so when there is no current in the coil the force of back pressure shuts the injector. -_- max
Definition of a capacitance in mosfet?
Capacitance in mosfet is of three types: gate capacitance diffusion capacitance routing capacitance Gate capacitance: limits the speed of the device t which it can be operated Diffusion capacitance: It is the capacitance due to charge carriers between drain and source. Routing capacitance: It is the capacitance of the metal which is deposited on the top of oxide layer.
Can you connect pressure coil instead of current coil in watt meter to measure power?
You have to connect both coils to measure power: the current coil in series with the load, and the voltage ('pressure') coil in parallel with the supply. And you have to observe the wattmeter's polarity markings if you don't want it to read downscale (backwards)!
In watt meter why pressure coil has more turn than current coil?
In an analog induction type wattmeter the pressure coil is connected accross the voltage source.It is intentionally made to have a larger number of turns than the current coil so that it's impedence increases and it draws minimum current from the circuit; causing lesser error in the reading.
