AC and DC

An oscilloscope shows the current flow above what type of current is it showing?

• DC

• AC

• Rectified Current

• Non rectified current

How does A.C and D.C differs from each other ?

• The magnitude and direction of A.C do not change while changes in D.C

• Only magnitude changes in both A.C and DC

• The magnitude and direction of D.C do not change while changes in A.C

• Only Direction changes in both A.C and DC

Name the Device and type of current as indicated by waveform

• DC generator ,DC

• DC motor , AC

• AC Generator , AC

• AC Generator , DC

What type of current is flowing in the circuit ?

• Alternating current

• Direct current

• Both

• None

An oscilloscope shows the current flow above what type of current is it showing?

• DC

• AC

• Rectified Current

• Non rectified current

If you wrap more coils around an electromagnet, it will become...

• brighter
• stronger
• weaker
• invisible

Passing a current through a solenoid will produce

• a magnetic field
• an electric field
• a current field
• nothing is produced

The unit of magnetic flux is the

• Henry
• Tesla
• Faraday
• Weber

Which of the following will increase the strength of an electromagnet?

• Use a Bigger Battery (More Current)

• Wrap More Coils

• Insert an Iron Core

• Use a Bigger Magnet

Which of the following will increase the strength of an electric generator?

• Use a Bigger Magnet

• Move the Magnet Slower

• Wrap More Coils

• Use a Bigger Battery