Answer. When the current changes in the primary coil then the magnetic field is induced in the primary coil and which get associated with the secondary coil through a metallic core. Due to the change in magnetic field across secondary coil, a current is induced in the secondary coil.
Q. What is the ratio of the secondary to primary turns of the transformer?
3 : 2
Table of Contents
- Q. What is the ratio of the secondary to primary turns of the transformer?
- Q. Why the primary and secondary coil of a transformer are preferably wound on the same core?
- Q. What is a secondary coil?
- Q. What is the function of the secondary coil?
- Q. Why are there no DC transformers?
- Q. What will happen if the primary of a transformer is connected to DC supply Mcq?
- Q. What will happen if we give a DC input to a transformer?
- Q. How do you reduce the secondary voltage of a transformer?
Q. Why the primary and secondary coil of a transformer are preferably wound on the same core?
Answer. The primary and secondary coils of a transformer are preferably wound on the same core so as to obtain tight coupling between the primary and secondary on each winding.
Q. What is a secondary coil?
Noun. 1. secondary coil – coil such that current is induced in it by passing a current through the primary coil. secondary winding, secondary. coil – reactor consisting of a spiral of insulated wire that introduces inductance into a circuit.
Q. What is the function of the secondary coil?
The secondary winding is the coil that delivers the energy at the transformed or changed voltage to the load. Usually, these two coils are subdivided into several coils in order to reduce the creation of flux.
Q. Why are there no DC transformers?
As mentioned before, transformers do not allow DC input to flow through. This is known as DC isolation. This is because a change in current cannot be generated by DC; meaning that there is no changing magnetic field to induce a voltage across the secondary component.
Q. What will happen if the primary of a transformer is connected to DC supply Mcq?
Explanatory Answer: DC voltage applied to the primary of a transformer sets up a constant magnetic flux in its core. Due to absence of any rate of change of flux, there is no induced EMF in the primary to oppose the voltage. Thus, the resistance is very low and current is very high.
Q. What will happen if we give a DC input to a transformer?
When a dc supply is provided to the transformer primary no self induced emf will be generated (no back emf). Therefore heavy current will flow in the transformer primary winding which may result in burning down the transformer primary winding.
Q. How do you reduce the secondary voltage of a transformer?
to lower the secondary voltage you must remove turns from the secondary winding. This will increase the available current since the power in = power out (neglecting losses). HOWEVER, as you increase current available the winding wire must increase in size to accommodate the current without a flame out.
