Transformers

What is the primary function of a transformer?

• Increase amperage

• Change electrical voltage

• Generate electricity

• Store electrical energy

In a transformer, the coil supplied with current is called the:

• Secondary coil

• Tertiary coil

• Primary coil

• Auxiliary coil

What type of transformer increases voltage from primary to secondary?

• Step-up transformer

• Step-down transformer

• Auto-transformer

• Isolation transformer

Which type of transformer configuration enhances magnetic field strength by closing the core?

• Air-core transformer

• Open-core transformer

• Closed-core transformer

• Shell type transformer

Which factor does NOT affect transformer efficiency?

• I2R loss

• Hysteresis loss

• Eddy current loss

• Transformer size

What is minimized by laminating the core of a transformer?

• I2R loss

• Eddy current loss

• Hysteresis loss

• Magnetic flux

The insulation between the plates of a capacitor is known as:

• Dielectric

• Conductor

• Resistor

• Insulator

In an x-ray circuit, what is the purpose of the filament step-down transformer?

• Increase voltage to kilovolts

• Decrease voltage to 5-15 volts

• Vary the line voltage

• Rectify the current

What type of current must transformers operate on to function correctly?

• Direct current (DC)

• Alternating current (AC)

• Pulsating direct current

• Static current

What is the process of converting alternating current to pulsating direct current called?

• Induction

• Rectification

• Transformation

• Amplification