# Diode Gates and Rectifiers MCQ’s

This set of Analog Electronic Circuits Multiple Choice Questions & Answers (MCQs) focuses on “Diode Gates and Rectifiers”.

1. What is the logic gate implemented in the following circuit?

a) OR
b) AND
c) NOT
d) NOR

2. Which of the following statements best describes the reason for not using diodes to implement logic gates?
a) Diodes are expensive
b) Diodes are unreliable and less efficient
c) The diode circuits have limited range of operation
d) Diodes are bulky for a logic gate

3. What is the logic gate implemented in the following circuit?

a) OR
b) AND
c) NOT
d) NOR

4. In the given circuit, what is the output V0 if E1 = 10V and E2 = 0V?

a) 0 V
b) 0.7 V
c) 10 V
d) 9.3 V

5. A 12 V, 50 Hz sine wave is fed to the given circuit as input? What is the output for 0.01s < t < 0.02s?

a) True
b) False

6. Which circuit has been represented in the associated circuit diagram?

a) Half wave rectifier
b) Full wave rectifier
c) NOT gate
d) AND gate

7. In the given circuit, what is the ideal output V0 if E1 = 10V and E2 = 0V?

a) 0 V
b) 0.7 V
c) 10 V
d) 9.3 V

8. Which circuit has been represented in the associated circuit diagram?

a) Half wave rectifier
b) Full wave rectifier
c) NOT gate
d) AND gate

9. What is the value of DC equivalent output voltage for the given circuit, given that the input voltage is 20 Vp-p and 50 Hz and the diode is a silicon diode?

a) 2.9574 V
b) -2.9574 V
c) -3.125 V
d) 0 V

10. Which of the following statements are true about the given circuit?

a) The circuit is that of a bridge rectifier
b) The PIV of the diode D1 must be greater than v0 for the circuit to function as a bridge rectifier
c) For silicon diodes, the value of v0=(vi-1.4) V
d) All of the mentioned

11. Which of the following equations is correct for a full wave rectified output?
a) |Vdc| = 0.318 Vp
b) |Vdc| = 0.636 Vp
c) |Vdc| = 0.477 Vp
d) |Vdc| = 0.211 Vp

12. In the given circuit, what will be the nature of the output waveform?

a) Half rectified
b) Full rectified
c) Sinusoidal
d) DC

13. In the given circuit, what is the value of Vp for the output wave, if the input fed is 20 Vp-p?

a) 10 V
b) 9.3 V
c) 5 V
d) 4.7 V