Electrical Machines and Circuits

If the circuit of the conductor is closed, then a current flows in the conductor due to the induced emf between the two ends. The current produced is called induced current.

The number of rotations produced in one second is called the frequency of the alternating current.

The process by which alternating current is converted into direct current is called full wave rectification.

AC power can be increased or decreased in voltage by using a transformer.

A term formerly used for direct current was galvanic current.

While checking a tester, it is recommended not to join its free ends for more than a few seconds because the cells of battery will drain very quickly.

An ignitron is a type of controlled rectifier dating from the 1930's.Ignitrons were long used as high-current rectifiers in major industrial and utility installations where thousands of amperes of AC current must be converted to DC, such as aluminum smelters.

Cross talk is caused due to the inductive coupling between two wires that are close to each other.

Yes, it is the correct answer.

Yes, it is the correct answer. This may happen if the insulation of the wires has come off due to wear and tear. This may cause a short circuit. This results in overcurrent.

Yes, it is correct.

A transformer changes AC voltage levels through electromagnetic induction between primary and secondary coils. It cannot work with DC current. Dynamos generate electricity, conductors transmit current, and inductors oppose current changes.

Open collector output TTL can be used for wired-AND (also called wired-OR for negative logic) connections. Multiple open collector outputs can be connected together with a single external pull-up resistor, implementing the AND function. Totem pole outputs cannot be wired together due to potential short circuits.

It is too hazardous to disconnect the wires. Spraying water on the wires is also very dangerous. Calling the police is also not going to help the situation. The best option is to call the electricity board since they know how to handle the situation.

Transformers work on the principle of electromagnetic induction, which requires a changing magnetic field. This is why transformers only function with alternating current (AC), allowing voltage to be stepped up or down. DC voltage cannot be transformed directly - it requires electronic converters.