Read the following statements with reference to electronic devices.
(A) A transistor is used as a rectifier
(B) A zener diode is used as a voltage regulator
(C) A NOT gate is a universal gate
(D) A transistor is used as an amplifier
(E) A photodiode is used as an oscillator
Choose the correct answer from the options given below:
1
(A) and (B)
2
(B) and (D)
3
(A) and (D)
4
(B), (C) and (E)