SDC Class Test

Zener breakdown occurs  with voltage ____ than 6Volts.

• Less

• More

• equal

• none of these

The diode _____.

• is the simplest of semiconductor devices

• has characteristics that closely match those of a simple switch

• is a two-terminal device

• All of the above

Calculate static resistance RD of a diode having ID = 30 mA and VD = 0.75 V.

• 25 Ohms

• 40 Ohms

• 0.04 Kohms

• 0.025 Ohms

In what state is a silicon diode if the voltage drop across it is about 0.7 V?

• No bias

• Forward bias

• Reverse bias

• Zener region

Applications of Schottky Diode are ___

• SMPS

• Radar Systems

• rectifiers

• All of these

The number of valence electrons in Si atom is____

• 4

• 6

• 5

• 3

The depletion width _____ in the forward bias, which results in having a majority flow across the junction.

• shrinks

• widens

• remains unchanged

• widens and shrinks alternatively

Identify the symbol

• general purpose PN junction diode

• transistor

• Schottky diode

• PIN diode

The depletion layer in the P-N junction region is caused by__

• drift of holes

• diffusion of charge carriers

• migration of impurity ions

• drift of electrons

Select the state of an ideal diode in the region of non conduction

• An open circuit

• A short circuit

• Unpredictable

• Undefined