1. . Which of the following diodes uses a metal-semiconductor junction?
(A) General purpose diodes
(B) Fast recovery diodes
(C) None of the mentioned
(D) Schottky diode
2. . Which of the following are/is the majority charge carriers in a Schottky diode?
(A) Holes
(B) Electrons
(C) Both holes & Electrons carry equal current
(D) None of the mentioned
3. . The tunnel diode is mainly used
(A) For rectification
(B) To control the power
(C) For very high speed of switching
(D) For fast chopping
4. . The tunnel diode is best suited for
(A) Oscillators
(B) Amplifiers
(C) Amplitude limiters
(D) Rectifiers
5. . The tunneling involves_______
(A) movement of electrons from n side conduction band to p side valance band
(B) acceleration of electrons in p side
(C) charge distribution management in both the bands
(D) positive slope characteristics of diode
6. . A PIN diode consists of ______number of semiconductor layers.
(A) Four
(B) Two
(C) Three
(D) One
7. . The resistance of the PIN diode with positive bias voltage:
(A) Decreases
(B) Increases
(C) Remains constant
(D) Insufficient data
8. . The gunn diode is
(A) bulk effect device
(B) Mostly used as a rectifier
(C) Mostly made with silicon
(D) All of the above
9. . The gunn diode is also known as
(A) No barrier diode
(B) Active area diode
(C) Bulk diode
(D) Esaki diode