HomeElectronics Multiple choice question MCQ online testImportant Question- Answers of Semiconductor Physics Important Question- Answers of Semiconductor Physics Leave a Comment / Electronics Multiple choice question MCQ online test Share thisMCQ on Semiconductor physics 0% 0 votes, 0 avg Created on September 15, 2022Basic electronics Semiconductor diode/Semiconductor physics 1 / 33 Category: Semiconductor Physics 1. Which of the following is not an active component TRANSISTOR SCR RESISTOR DIODE 2 / 33 Category: Semiconductor Physics 2. As the doping to a pure semiconductor increases, the bulk resistance of the semiconductor Decreases Increases None of the above Remains the same 3 / 33 Category: Semiconductor Physics 3. Resistance in a diode in Forward bias is High Very high Zero Low 4 / 33 Category: Semiconductor diode (PN junction) 4. Output frequency of a full wave rectifier is 50 Hz, What is input frequency 50hz 25hz 100hz 200hz 5 / 33 Category: Semiconductor Physics 5. Which type of charge on P-type material Negative Neutral Positive None of these 6 / 33 Category: Semiconductor Physics 6. Atomic no of Germanium 16 29 14 32 Hint ( For Ge energy band gap is 0.72eV) 7 / 33 Category: Semiconductor Physics 7. The energy band gap in silicon is..... 0.72eV 0.3eV 1.12eV 1.72eV 8 / 33 Category: Semiconductor Physics 8. Energy gap of a non-conductor is Very large and vacant Complete overlapped very small and vacant none of these 9 / 33 Category: Semiconductor diode (PN junction) 9. What is the work of a Zener Diode ? constant current, Varied voltage Varied current, Constant voltage Constant current, constant voltage Varied current, Varied Voltage Hint (formula 0.45xVrms=0.45x 24= 10.8) 10 / 33 Category: DC power supply 10. A half-wave rectifier is connected with input of 24V 50hz AC, What is Output DC voltage? 5.4v 10.8v 9.9v 12v 11 / 33 Category: Semiconductor Physics 11. Valance electron in a semiconductor 2 6 8 4 12 / 33 Category: DC power supply 12. Input frequency of a 3-phase half wave rectifier is 50hz, then output frequency is 300hz 25hz 150hz 50hz 13 / 33 Category: DC power supply 13. The AC component present in output voltage is called Ripple None Non-linear regulators Switching regulator 14 / 33 Category: Semiconductor Physics 14. When a Pentavalent impurity is added to a pure semiconductor, it becomes P-type semiconductor An intrinsic semiconductor An insulator N-type semiconductor 15 / 33 Category: Semiconductor Physics 15. A semiconductor is formed by……….. Bonds Co-ordinate Covalent Ionic Electrovalent 16 / 33 Category: DC power supply 16. The output obtained by the rectifier is Pulsating AC Non-pulsating AC Pulsating DC None 17 / 33 Category: Semiconductor Physics 17. The conductivity of a semiconductor ………..by adding impurity None Increase Both Decrease 18 / 33 Category: Semiconductor Physics 18. A semiconductor has ……….Temperature Coefficient of resistance Positive Negative Zero None Negative Coefficient Means When increasing the temperature then the resistance will decrease 19 / 33 Category: Semiconductor Physics 19. Which is impurity for an N-type material Antimony Silicon Boron Gallium 20 / 33 Category: Semiconductor Physics 20. Reverse Breakdown voltage that is Fixed already in the diode Avalanche breakdown A and B Zener breakdown 21 / 33 Category: Semiconductor Physics 21. Majority carrier in N-type material Holes Electron Both A and B 22 / 33 Category: DC power supply 22. allows DC but it blocks AC None Conductor Inductor Insulator 23 / 33 Category: Semiconductor diode (PN junction) 23. Which type of diode is work as a Variable Capacitor? LED Tunnel Diode Photo diode Varactor Diode 24 / 33 Category: Semiconductor Physics 24. Which are responsible of Current flow in a semiconductor both Only free electron Holes and free electrons only holes 25 / 33 Category: Semiconductor diode (PN junction) 25. Ripple frequency of a half-wave rectifier is Equal to input Half of input 4 times of input Double of input 26 / 33 Category: Semiconductor Physics 26. How many junctions is in a diode 3 2 both 27 / 33 Category: Semiconductor Physics 27. Most commonly used Rectifier is Center-tap full wave rectifier Full wave bridge rectifier Half wave rectifier 28 / 33 Category: Semiconductor Physics 28. Semiconductors in pure forms known as Extrinsic Intrinsic 29 / 33 Category: Semiconductor Physics 29. What is the breakdown voltage of LED? 5.0V- 7.5V 1.7V- 3.0V 10.2V- 20.5V 0.1V-0.3V 30 / 33 Category: Semiconductor Physics 30. How many valance electrons are in a Pentavalent impurity? 5 4 6 3 Hint Hint(Indium, Boron, and Gallium have 3) Arsenic Bismuth and phosphorus have 5) 31 / 33 Category: Semiconductor Physics 31. Which of the following is Impurity material of valency 3 Arsenic Bismuth Boron Phosphorus 32 / 33 Category: Semiconductor Physics 32. The width of depletion layer in Reverse bias Decrease Constant Increase 33 / 33 Category: Semiconductor Physics 33. How many diodes in the Center-tap Full wave rectifier 6 2 1 4 Your score isThe average score is 33% LinkedIn Facebook Twitter 0% Restart quiz Exit Anonymous feedback Thank you Send feedback Also read Logic gates MCQ Quiz Zener Diode MCQ Quiz Concept of Logic Gates What is Impedance (Impedance vs Resistance) Share this