Electronic Devices Quiz

Which of the following technique can’t be used for generating electron-hole pairs in electronic devices?

• Thermal excitation

• Impact ionization

• Photo excitation

• Impurity injection

Which of the following is correct about photo diode electronic devices?

• P-N junction is connected in reverse bias.

• Electron-hole pairs are generated by impurity injection in depletion layer

• It is a photovoltaic cell

• No external voltage is applied

Which of the following is wrong about solar cell electronic devices?

• Solar cell responsivity is directly proportional to the wavelength of light

• It produces dark current

• It is a photovoltaic cell

• No external voltage is applied

Which of the following semiconductor is mostly used to construct electronic circuits?

• Silicon

• Germanium

• Selenium

• Tin

In which of the following region does BJT act as the amplifier electronic device?

• Cut-off

• Saturation

• Active

• Reverse saturation

Which of the following is the correct order of turn-off times?

• MOSFET < BJT < IGBT < SCR

• MOSFET < IGBT < BJT < SCR

• SCR < BJT < IGBT < MOSFET

• BJT < MOSFET < IGBT < SCR

Which of the following type of transistor is preferred in digital and analog electronic circuits?

• BJT

• JFET

• MOSFET

• FET

Which of the following is true about Zener diode?

• It is lightly doped

• It is mostly used in voltage regulator electronic circuits

• It is used in forward bias

• It has avalanche breakdown

In which region does BJT act as the OFF switch in electronic circuits?

• Cut-off

• Saturation

• Active

• Reverse saturation

What is the conductivity of an extrinsic type semiconductor electronic device at 0K?

• maximum

• zero

• can’t be determined

• minimum