18 Questions
What defines a Step-up transformer?
The secondary winding has more turns than the primary winding
Which type of transformer has a secondary winding with fewer turns than the primary winding?
Step-down transformer
What is the key characteristic that distinguishes a practical transformer from an ideal transformer?
Efficiency
In a Step-down transformer, what can be said about the induced EMF compared to the input signal?
It is lesser
What role does a transformer play in an electrical circuit?
Changing voltage or current magnitude
Which type of transformer has its windings wound around a common magnetic core?
Core type transformer
What distinguishes core type and shell type transformers?
The manner in which primary and secondary coils are placed around the core
Which part of the transformer provides a continuous magnetic path?
Core
What is one of the functions of an electrical transformer in a circuit?
Isolating two electric circuits
In which application would you likely find the use of an electrical transformer?
Windmills
What does a transformer do to the voltage level at power generation sites?
Steps it up
Why is preventing the passage of DC from one circuit to another an important function of a transformer?
DC can damage equipment in the receiving circuit
What is the main difference between core type and shell type transformers?
Core type transformers are suitable for high voltage applications while shell type transformers are used for low voltage applications.
In an ideal transformer, what is the efficiency compared to a practical transformer?
100% efficiency in an ideal transformer, less than 100% in a practical transformer.
Why is the voltage regulation of a practical transformer always more than 0%?
Since there is flux leakage in practical transformers.
What makes an ideal transformer hypothetical and impossible to realize practically?
The fact that it has zero core loss and copper loss.
Which type of winding is common in core type transformers?
Multi-layer disc type winding.
What is the primary application of shell type transformers?
Transformers used in electronic circuits.
This quiz covers the understanding of transformers, the differences between practical and ideal transformers, the characteristics of a practical transformer, and how a practical transformer operates both on the no-load and on-load circuit.
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