Moving coil galvanometer is used to detect unknown resitance of the both ac or dc circuits :)deepak instrumentation engineerAnswerA 'galvanometer' is simply an instrument that detects and measures small currents; 'moving coil' describes its operating principle. A moving-coil galvanometer is a d.c. instrument; if subject to a.c., then it will simply vibrate as it will not be able to respond the the frequency (unless the frequency is very low, in which case, it will sweep back and forth in step with that frequency).The moving-coil principle is applied to other instruments, and can be used in the construction of multimeters. In the case of a multimeter, a rectifier circuit is incorporated so that it can be used to measure a.c. currents and voltages.
That depends if it is an ac or dc motor.
there are many parts of a dc generator armature, field coil, yoke, body, rotor and commutator.
During the operation of a DC motor, EMF is created across its terminals using an external source. Whereas, in a DC generator EMF is created across its terminal based on principle of dynamically induced EMF. So talking in terms of EMF, in DC motor EMF is consumed by the motor coil and utilized to rotate the axle. On the other hand, in DC generator EMF developed across coil is transfered to a load or a battery and consumed by them.
An ac generator produces ac, a dc generator produces dc, it all depends on the generator.
Moving coil galvanometer is used to detect unknown resitance of the both ac or dc circuits :)deepak instrumentation engineerAnswerA 'galvanometer' is simply an instrument that detects and measures small currents; 'moving coil' describes its operating principle. A moving-coil galvanometer is a d.c. instrument; if subject to a.c., then it will simply vibrate as it will not be able to respond the the frequency (unless the frequency is very low, in which case, it will sweep back and forth in step with that frequency).The moving-coil principle is applied to other instruments, and can be used in the construction of multimeters. In the case of a multimeter, a rectifier circuit is incorporated so that it can be used to measure a.c. currents and voltages.
That depends if it is an ac or dc motor.
mic or moving iron coil is instrument type works on ac and dc
mic or moving iron coil is instrument type works on ac and dc
there are many parts of a dc generator armature, field coil, yoke, body, rotor and commutator.
Advantages: High sensitivity and accuracy. Can measure both AC and DC currents. Low power consumption. Disadvantages: Limited range of measurement. Susceptible to external magnetic fields. Requires frequent calibration.
A galvanometer measures charge by detecting the flow of electric current through a coil of wire which generates a magnetic field. As charge flows through the coil, it causes a deflection in a needle or pointer on the galvanometer's display, indicating the magnitude of the charge passing through the circuit.
It works on DC only It consist a permanent magnet coil.
During the operation of a DC motor, EMF is created across its terminals using an external source. Whereas, in a DC generator EMF is created across its terminal based on principle of dynamically induced EMF. So talking in terms of EMF, in DC motor EMF is consumed by the motor coil and utilized to rotate the axle. On the other hand, in DC generator EMF developed across coil is transfered to a load or a battery and consumed by them.
The parts of dc generator are 1)armature coil 2)field magnet 3)split rings 4)brushes
Ah, but it does deflect! It quivers back and forth in sync with the polarity of the AC, but except for very low frequencies (e.g. < 1 Hz) you won't be able to see the quivering. I saw it in high school electronics using a hand cranked alternator that generated AC with a period of 20 to 30 seconds.
There are two types me dc generator 1 separately excited dc generator 2 self excited dc generator