Transformer Basics Quiz

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What is the primary function of a transformer?

To convert AC to DC

To transform voltages

To transmit electrical signals

To increase or decrease voltage (correct)

What is the main component of a transformer?

Resistor

Capacitor

Laminated soft iron frame (correct)

Semiconductor

How does a transformer work?

By using a permanent magnet to induce a current in the secondary coil

By passing direct current (DC) through the primary coil

By passing alternating current (AC) through the primary coil (correct)

By converting AC to DC in the primary coil

What is the difference between a step-up and a step-down transformer?

A step-up transformer increases the voltage, while a step-down transformer decreases the voltage. Signup and view all the answers

What is the purpose of the soft iron core in a transformer?

To concentrate the magnetic lines of force Signup and view all the answers

Why is the soft iron core of a transformer laminated?

To prevent eddy currents Signup and view all the answers

What is the relationship between the number of turns in the primary and secondary coils of a transformer?

The number of turns in the secondary coil is always greater than the number of turns in the primary coil. Signup and view all the answers

What is the purpose of the insulation between the primary and secondary coils of a transformer?

To prevent short circuits between the coils Signup and view all the answers

What type of current is used in the primary coil of a transformer?

Alternating current (AC) Signup and view all the answers

What is the purpose of the laminated soft iron frame in a transformer?

To increase the efficiency of the transformer Signup and view all the answers

What is the main function of a transformer?

To alter the voltage of an alternating current Signup and view all the answers

Which type of transformer can put out different amounts of voltage from the same input voltage?

Variable transformer Signup and view all the answers

Which of the following is NOT a type of transformer?

Choke coil Signup and view all the answers

Which type of transformer consists of a single coil of insulated wire wound over a laminated soft iron core?

Autotransformer Signup and view all the answers

What is the key difference between the primary and secondary coils of a transformer?

All of the above Signup and view all the answers

What is the purpose of a choke coil in a circuit?

To produce a self-induced EMF Signup and view all the answers

How does a low frequency choke coil differ from a high frequency choke coil?

All of the above Signup and view all the answers

What is the main purpose of a capacitor in a power supply circuit?

To act as a filter and remove ripples from the rectifier output Signup and view all the answers

Which type of transformer is used to convert high voltages to low voltages?

Step-down transformer Signup and view all the answers

What is the key purpose of an ON-OFF switch in a power supply circuit?

To switch the circuit on and off Signup and view all the answers