Question 1 of 10
In an ideal transformer, what is the relationship between input power (Pin) and output power (Pout)?
In an ideal transformer, there are no losses, so input power equals output power.
Question 2 of 10
What is the ideal transformer equation relating primary and secondary voltages (Vs, Vp) and turns (Ns, Np)?
The voltage ratio is directly proportional to the turns ratio (Vs/Vp = Ns/Np).
Question 3 of 10
If the voltage increases in a transformer, what happens to the current (assuming ideal conditions)?
In an ideal transformer, power in equals power out (Pin = Pout). If voltage increases, current must decrease proportionally.
Question 4 of 10
How is impedance (Zs) transformed from the secondary to the primary side of an ideal transformer?
Impedance transformation follows the square of the turns ratio: Zp = Zs * (Np/Ns)^2
Question 5 of 10
What is the relationship between the primary current (Ip) and the secondary current (Is) in an ideal transformer?
The current ratio is inversely proportional to the turns ratio: Ip/Is = Ns/Np
Question 6 of 10
If a transformer steps up the voltage, what happens to the current in the secondary winding compared to the primary?
Since power must be conserved, stepping up the voltage means stepping down the current.
Question 7 of 10
What is the primary factor that makes a transformer 'ideal'?
An ideal transformer has no losses (core or winding resistance) and perfect magnetic coupling.
Question 8 of 10
The efficiency of a real transformer is usually:
Real transformers have very high efficiencies because core and copper losses are minimized
Question 9 of 10
What does the turns ratio (Ns/Np) represent?
The turns ratio is the central concept for transformer operation
Question 10 of 10
Which of the following is NOT a characteristic of an ideal transformer?
Ideal transformers have no winding resistance, which is a key part of how losses are kept to a minimum.
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