Electronics

In the diode valve, ........ the electrode that works as an emitter is ............

Examples of semi conductors used to make transistors are

Vacuum tubes can be used to make fluorescent light

• True

• False

Tags

NGSS.HS-PS2-5

Transistors act as both rectifier and amplifier.

• True

• False

The symbol above is a diode.......

• True

• False

Tags

NGSS.HS-PS3-5

I was able to liberate some electrons by rubbing my pen on my hair. this method of liberation is called .....

• Cold cathode emission method

• Kinetic energy emission method

• Secondary emission method

• Thermionic emission method

Electrons are liberated in the diode valve using the ..... emission method.

• Primary emission

• Photoelectric method

• Cold Cathode method

• secondary emission method

Tags

NGSS.HS-PS2-5

The triode can be used as a/an ..........

• Rectifier

• Amplifier

• Converter of Alternating current to Direct current

• Converter of Direct current to Alternating current

One of the following is NOT an advantage of the transistors over the valves.

• They are smaller in size

• There is need for heating element

• They have quick response to input signal

• They have longer life span

The symbol here is

• A diode

• NPN transistor

• PNP transistor

• A triode

Tags

NGSS.HS-PS3-5