Table of Contents
Why is a transformer not classified as an electric machine?
Transformers do not actually make conversion between mechanical and electrical energy, but they transfer electric power from one circuit to another circuit. Whereas, step-down transformer decrease the voltage level with the corresponding increase in the current so as to keep the power constant.
Is transformer a device or a machine?
A transformer is a device that transfers electric energy from one alternating-current circuit to one or more other circuits, either increasing (stepping up) or reducing (stepping down) the voltage.
Why is a transformer called an electrical device?
A transformer is an electrical device which, by the principles of electromagnetic induction, transfers electrical energy from one electric circuit to another, without changing the frequency. The energy transfer usually takes place with a change of voltage and current.
Which kind of machine is a transformer?
static electrical machine
The transformer is an example of static electrical machine. Motor and generator both are dynamic electrical machine.
Which of the following does not produce electric energy?
An LED converts electrical energy into light energy. Hence, it is a consumer of electric energy and so it does not produce electrical energy.
Which kind of machine is a transformer Mcq?
Solution: Transformer is the machine which has physical spacing and has magnetic circuit to exchange the voltage.
What is the difference between electrical machine and transformer?
In simple words, an electrical machine converts electrical energy into mechanical energy & vice versa. A transformer is also an Electrical machine with an exception that it converts voltage & current levels. Electrical machines are classified into two main types i.e.
What is the purpose of a transformer?
What is the purpose of a transformer? Transformers are found everywhere Alternating Current (AC) electrical energy is used. A transformer is an electrical device that trades voltage for current in a circuit, while not affecting the total electrical power. This means it takes high-voltage electricity with a small current
Why is a transformer a stationary electrical machine?
A transformer is a stationary electrical machine, which does not have any moving parts. It is a machine because there is a conversion between electrical & magnetic energy between the windings of the transformer.
How do transformers change the voltage of electricity?
In the case of electrical utilities in homes, they use transformers to change the voltage of electricity as it travels from the power plant to your home. First using a transformer, the voltage of electricity coming from a power plant is “stepped up” to the right level for long-distance transmission.