Ac/Dc and Transformers

AC stands for __________ current.

• alternating

• Adjusting

• Alarmed

• Additional

DC stands for __________ current.

• deviating

• default

• diverging

• direct

This picture is an example of a ___________

• Step- Up Transformer
• Step- Down Transformer
• Motor
• Generator

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-3

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

• DC

• AC

• Rectified Current

• Non rectified current

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

• DC

• AC

• rectified current

• non rectified current

Tags

NGSS.HS-PS2-5

A transform has 2400 turns on a primary coil and 120 turns on a secondary coil, the input voltage is 240 volts what is the output voltage?

Secondary voltage / Primary voltage = No. of turns in Secondary coil / No. of turns in Primary coil.

• 6v

• 9v

• 12v

• 24v

Tags

NGSS.HS-PS2-5

The above half wave form is created by an AC going into which circuit?

• single diode

• Bridge rectifier

• Transformer

• Voltage regulator

Tags

NGSS.HS-PS4-1

Select the correct voltage graphs for a cell.

• 
• 
• 
• 

Tags

NGSS.HS-PS2-5

Mains current has a frequency of 50 Hz. This means it changes direction 50 times every __________.

• second

• Minute

• Time

• Hertz

Tags

NGSS.HS-PS4-1

Flows in only one diretion

• Direct Current

• Alternating Current