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The value B is ?

• lb/le

• le/lc

• lc/lb

What about transistor is true?

• Ib=lc+le

• lc=le+lb

• le=lb+lc

What about transistor is true?

• base collector reverse bias+base emitter is forward bias

• base collector is forward bias+base emitter is reverse bias

• Both base collector and base emitter is reverse Bias

• Both base collector and base emitter is forward Bias

What type of diode

• LED

• Laser diode

• zener diode

• zigzag Diode

What is true about LED?

1.light when current flow in forward bias

2.light when current flow in reverse bias

3.color depends on on dopant

4.no light reverse bias

5.brightness and color depend on dopant material

• 1,2,3

• 1,3,4

• 1,3,5

• 2,4,5

According to diagram what diode work on positive cycle?

• D1,D2

• D3,D4

• D2,D3

LED photo what is true

• Flat side is anode

• anode and cathode together

• flat side is cathode

What is true about diagram (diode)?

• Line represent anode

• line represent cathode

• diagram represent transister

What is true when diode connect in parallel ?

• Current carrying capacity increase

• Increase current blocking

Measure diode forward???? (Voltmeter on diode test)

1.diode in forward bias

2.diode in reverse bias

3.forward volt 0.6.

4.diode is silicon.

5.diode is germanium.

• 1,2,4

• 1,3,4

• 1,3,5

• 2,3,4