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Standard resistance coils are made of manganin or nichrome due to their stable and predictable resistive properties. Manganin has a low temperature coefficient of resistance, which minimizes changes in resistance with temperature fluctuations, making it ideal for precise measurements. Nichrome, on the other hand, offers good durability and resistance to oxidation, ensuring long-term stability and reliability in various conditions. Both materials help maintain accuracy in electrical measurements and are less affected by environmental factors.
What else can I help you with?
Which of the material is used for the swamping resistance that is connected in series with the working coil of a voltmeter?
A swamping resistor is usually manufactured from the metal alloy manganin (trade name), or other alloy with similar resistance/temperature characteristics -i.e. practically zero temperature coefficient of resistance. In other words, its resistance will remain more-or-less constant over a wide range of temperature variation.
Why eureka is used to make standard resistance coil?
Eureka, an alloy of copper and nickel, is used to make standard resistance coils due to its excellent stability and low temperature coefficient of resistance. This ensures that the resistance remains consistent over a wide range of temperatures, making it ideal for precise measurements. Additionally, Eureka exhibits good corrosion resistance and mechanical strength, contributing to the durability and reliability of standard resistance coils in various applications.
Why is there a difference in current in a coil when you apply dc voltage and then AC voltage to it?
A coil has both resistance and inductance. When you apply a d.c. voltage, the opposition to current is the resistance of the coil. When you apply an a.c. voltage, the opposition to current is impedance -the vector-sum of the coil's resistance and its inductive reactance. Inductive reactance is proportional to the inductance of the coil and the frequency of the supply.
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
Does the resistance of heater coil remains same when current flows through it?
Typically resistance rises with temperature.
Which of the material is used for the swamping resistance that is connected in series with the working coil of a voltmeter?
A swamping resistor is usually manufactured from the metal alloy manganin (trade name), or other alloy with similar resistance/temperature characteristics -i.e. practically zero temperature coefficient of resistance. In other words, its resistance will remain more-or-less constant over a wide range of temperature variation.
Why magnet is used for making standard resistance coil?
magnet produce emf it maintain the resistance as same
Why eureka is used to make standard resistance coil?
Eureka, an alloy of copper and nickel, is used to make standard resistance coils due to its excellent stability and low temperature coefficient of resistance. This ensures that the resistance remains consistent over a wide range of temperatures, making it ideal for precise measurements. Additionally, Eureka exhibits good corrosion resistance and mechanical strength, contributing to the durability and reliability of standard resistance coils in various applications.
Which of the coil of the wattmeter has high resistance?
The voltage (or 'potential') coil has the higher resistance, because it is connected in parallel with the load.
When Replacing 12v coil on 1998 Kubota engine wg750 could it have resistance type external wiring from coil to distributor or is resistance internal in coil?
A engine coil has a high internal resistance, the needing of a suplementar resistance may be advised to you by a car electrician, who works with such brand and model of your car.
On an 86 Toyota truck what should the pickup coil resistance be?
Distributor pickup coil resistance 140-180 ohms.
What is 99 silhouette 4.3 firing order on coil?
At 6500-11500 ohms, the resistance on the ignition coil is okay. If the resistance exceeds 11500 or below 6500, the coil requires replacement.
Why is there a difference in current in a coil when you apply dc voltage and then AC voltage to it?
A coil has both resistance and inductance. When you apply a d.c. voltage, the opposition to current is the resistance of the coil. When you apply an a.c. voltage, the opposition to current is impedance -the vector-sum of the coil's resistance and its inductive reactance. Inductive reactance is proportional to the inductance of the coil and the frequency of the supply.
How can you test a coil to see if its bad?
To test a coil for faults, you can use a multimeter to measure its resistance. Disconnect the coil from the circuit and set the multimeter to the ohms setting; then, measure the resistance across the primary and secondary terminals. A significantly high or infinite resistance indicates a bad coil, while a very low resistance suggests a short. Additionally, visually inspect the coil for physical damage or corrosion, which can also indicate failure.
Does the resistance of coil remain same through out of experiment why?
The resistance of the coil does not remain the same throughout the experiment because the voltage across and the current is varied.
How can I test a lawn mower coil to ensure it is functioning properly?
To test a lawn mower coil, you can use a multimeter to check the resistance between the coil's terminals. If the resistance falls within the manufacturer's specified range, the coil is likely functioning properly.
How could you identify the less coil number side of a transformer?
By measuring its resistance with an accurate multimeter provided the coil is not blown. If less resistance compared to that of the other coil would decide that it is less number turn.
