Summer School Physical Science - CH 8 - Section III Quiz

A device that increases or decreases voltage in a power line is called a ___________.

• Transformer

• Motor

• Generator

• Commutator

A device that increases or decreases the voltage of an alternating current is a ___.

• Transformer

• Motor

• Commutator

• Galvanometer

In a step-up transformer, the number of turns of wire is greater in the ______ coil than in the ________ coil, and the ______ voltage exceeds the ________ voltage.

• secondary, primary, input, output

• secondary, primary, output, input

• primary, secondary, input, output

• primary, secondary, output, input

The function of an electric generator is to __________.

• change electrical energy to chemical energy

• change chemical energy to electrical energy

• change mechanical energy to electrical energy

• change electrical energy to mechanical energy

_________ is the process of producing an electric current by moving a loop of wire through a magnetic field.

• Generation

• Electromagnetic induction

• Electromagnetic deduction

• Magnetic charging

Alternating current is transmitted across large distances at high voltage to minimize what?

• Energy loss as heat

• Danger

• The need for transformers

• Wire usage

What do step-up transformers do to a circuits voltage?

• Increase it

• Decrease it

• No affect on voltage

• Drop it to 0

Which coil has the most turns in a step down transformer?

• Induction

• Deduction

• Primary

• Secondary

What is part A?

• Voltage source

• Conducting coil

• Electric motor

• Permanent magnet

What is this picture of?

• Electric motor

• Tesla coil

• Galvanometer

• Step-Up Transformer