Transformer
Transformer: Overview
This topic covers concepts such as Transformers, Step Up Transformer, Step Down Transformer, Loss of Energy in Transformer, Loss of Energy in Transformer Due to Iron, Loss of Energy in Transformer Due to Copper, etc.
Important Questions on Transformer
We can minimise the loss of energy in transformer by using wire with large cross-sectional area in the manufacturing of the coils.
Write one of the cause of energy loss in Transformer.
Hysteresis loss can be minimised by selecting a material for the core that has _____ (low/high)hysteresis coefficient.
Statement (A) : Flux leakage in a transformer can be minimised by winding the primary and secondary coils one over the other.
Statement (B) : Core of the transformer is made of soft iron
The source of energy loss in transformer due to iron core is due to the formation _____ (hysteresis/ eddy currents/ flux leakage)
How do you reduce iron loss in a transformer?
A generator supplies to a transformer's primary coil, which has turns. If the secondary coil has turns, what is the secondary voltage?
A load is connected to the secondary of a transformer whose primary draws line voltage. If a current of flows in the load, what is the current in the primary coil? Comment on the type of transformer being used.
A transformer with turns ratio has , input. The frequency of the output is:
A generator supplies to a transformer's primary coil, which has turns. If the secondary coil has turns, what is the secondary voltage?
A load is connected to the secondary of a transformer whose primary draws line voltage. If a current of flows in the load, what is the current in the primary coil? Comment on the type of transformer being used.
Which of the following is minimised by laminating the core of an electrical transformer?
Iron loss an electrical transformer occurs in
Where does the loss of copper take place in an electrical transformer?
The basic principle on which the transformer works is
Step-up transformer is used to reduce the output voltage while step-down transformer is used to increase the output voltage.
A power transmission line feeds input power at to a stepdown transformer with its primary windings having turns. What should be the number of turns in the secondary in order to get output power at ?
The output voltage of an ideal transformer, connected to a AC mains, is . This transformer is used to light a bulb with rating . Calculate the current in the primary coil of the circuit.
