The armature of a d.c. The machine has a resistance of 0.25 ohm and is connected to a 300V supply. Determine the e.m.f. generated when it runs as a generator giving 100 A and as a motor taking 80 A.

Q: Compare between friction, conduction and induction of static electricity

A: There are three methods of charge transfer namely: Friction Conduction Induction

Q: What do you think will happen when they switches are turned closed.

A: Required : What will happen when the switches are closed.

Q: 7Name the process of charging a conductor by bringing it near another charged object without…

A:

Q: What happens to a magnet when it comes into a larger magnetic field?

A: Answer Magnets are drawn along the magnetic field gradient. If opposite poles of two seperate…

Q: Identify the laws of electromagnetic induction.

A:

Q: explain the disadvantage of transmitting electrical energy over distances

A: Transmitting electrical energy over long distances presents several disadvantages, primarily related…

Q: Name two appliances in which an electric motor is used.

A: The electric motor work principle is based on Fleming’s left hand rule. Electric motor converts…

Q: 10. Explain the concept of magnetic drag on a sheet of metal as it swings in the presence of a…

A: We have to explain magnetic damping and what causes it in the context of above mentioned figure

Q: Suppose you slowly move a bar magnet near a coil of wire. You then move the bar magnet near the coil…

A: Given A bar magnet move near to a coil. First time bar magnet move slowly, Second time bar magnet…

Q: Explain the idea that an electric generator is an "electric motor in reverse"

A: Electric motor is an electrical machine that converts electrical energy to mechanical energy.…

Q: An iron rod becomes magnetic when the magnetic domains point in the same direction its electrons…

A: Correct answer - (a) the magnetic domains point in the same direction

Q: 7. Recall the motor principle. In what three ways can the magnetic force be increased?

A: To answer: The motor principle Three ways the magnetic force be increased.

Q: What is the difference between DC and AC electricity? Identify some common sources of each type of…

A: Direct current (DC) is the flow of electric charge in only one direction. It is the steady state of…

Q: What electrical quantity cannot be changed by a transformer

A: What electrical quantity cannot be changed by a transformer.

Q: What is the purpose of a switch?

A: Switch is an electrical component by which we can physically connect or disconnect the conducting…

Q: What are AC generators and transformers?

A: AC generators: AC generators are also known as alternators which converts mechanical energy into…