Is this transformer a step-up transformer or a step-down transformer?

Is this a step-up or step-down transformer?

The question is about the transformer used for stepping down an alternating voltage supply.

a) By writing about magnetic fields, explain how the transformer works.

b) A power line supplies electrical energy to a transformer in a factory. The input voltage to the transformer is $11000 \mathrm{~V}$. The transformer changes this to $415 \mathrm{~V}$ for use in the factory. The power input to the transformer is $800 \mathrm{~kW}$. i) Calculate the current in the secondary coil of the transformer. What assumption have you made about the transformer? ii) The power line to the factory is operated at as high a voltage as possible. Explain why this is so.

The output voltage of a $75-\mathrm{W}$ transformer is $12 \mathrm{~V}$, and the input current is $22 \mathrm{~A}$. (a) Is this a step-up or a step-down transformer?

The output voltage of a 95-W transformer is 12 V, and the input current is 22 A. Is this a step-up or a step-down transformer

What are current and voltage transformers?

D. An ac generator has a maximum emf output of 155 V. a. Find the rms emf output. b. Find therms current in the circuit when the generator is connected to a $53 \Omega$ resistor.

A step-up transformer _____ the voltage and _____ the current.

If a transformer has a turns ratio of $1: 12$, what is the rms secondary voltage? The peak secondary voltage? Assume a primary voltage of $120 \mathrm{~V}_{\text {rms. }}$.

Which of the following is true about all series ac circuits? $(a)$ The voltage across any circuit element is a maximum when the current is a maximum in that circuit element. $(b)$ The current at any point in the circuit is always the same as the current at any other point in the circuit. $(c)$ The current in the circuit is a maximum when the source ac voltage is a maximum. $(d)$ Resistors, capacitors, and inductors can all change the phase of the current.

The rms current in a circuit is 2.5 A. What is the maximum current in the circuit?

Which of the following is true about all series ac circuits? $(a)$ The voltage across any circuit element is a maximum when the current is a maximum in that circuit element. $(b)$ The current at any point in the circuit is always the same as the current at any other point in the circuit. $(c)$ The current in the circuit is a maximum when the source ac voltage is a maximum. $(d)$ Resistors, capacitors, and inductors can all change the phase of the current.

A. What is the rms current in a light bulb that has a resistance of $25 \Omega$ and an rms emf of 120 V? What are the maximum values for current and emf?

What exactly does a step-down transformer step down?