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 Spread the loveMCQ 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 type of charge on P-type material Neutral Positive None of these Negative 2 / 33 Category: Semiconductor Physics 2. When a Pentavalent impurity is added to a pure semiconductor, it becomes An intrinsic semiconductor An insulator P-type semiconductor N-type semiconductor Hint Hint (Indium, Boron, and Gallium have 3) Arsenic Bismuth and phosphorus have 5) 3 / 33 Category: Semiconductor Physics 3. Which of the following is Impurity material of valency 3 Phosphorus Boron Arsenic Bismuth 4 / 33 Category: DC power supply 4. The output obtained by the rectifier is Pulsating AC Pulsating DC None Non-pulsating AC 5 / 33 Category: Semiconductor Physics 5. The conductivity of a semiconductor ………..by adding impurity Increase Decrease None Both 6 / 33 Category: Semiconductor Physics 6. Majority carrier in N-type material Both A and B Electron Holes 7 / 33 Category: Semiconductor Physics 7. Which are responsible of Current flow in a semiconductor both only holes Holes and free electrons Only free electron 8 / 33 Category: Semiconductor Physics 8. Reverse Breakdown voltage that is Fixed already in the diode Avalanche breakdown A and B Zener breakdown 9 / 33 Category: Semiconductor Physics 9. Valance electron in a semiconductor 8 6 2 4 10 / 33 Category: Semiconductor diode (PN junction) 10. Ripple frequency of a half-wave rectifier is Equal to input Double of input Half of input 4 times of input 11 / 33 Category: Semiconductor Physics 11. How many junctions is in a diode 3 both 2 12 / 33 Category: Semiconductor Physics 12. A semiconductor is formed by……….. Bonds Co-ordinate Electrovalent Covalent Ionic 13 / 33 Category: Semiconductor Physics 13. Energy gap of a non-conductor is Complete overlapped Very large and vacant very small and vacant none of these 14 / 33 Category: Semiconductor diode (PN junction) 14. Which type of diode is work as a Variable Capacitor? LED Tunnel Diode Varactor Diode Photo diode Hint (formula 0.45xVrms=0.45x 24= 10.8) 15 / 33 Category: DC power supply 15. A half-wave rectifier is connected with input of 24V 50hz AC, What is Output DC voltage? 10.8v 9.9v 12v 5.4v 16 / 33 Category: Semiconductor Physics 16. Atomic no of Germanium 14 29 32 16 17 / 33 Category: Semiconductor Physics 17. As the doping to a pure semiconductor increases, the bulk resistance of the semiconductor Decreases Increases None of the above Remains the same 18 / 33 Category: DC power supply 18. Input frequency of a 3-phase half wave rectifier is 50hz, then output frequency is 300hz 150hz 50hz 25hz 19 / 33 Category: Semiconductor Physics 19. Resistance in a diode in Forward bias is High Low Very high Zero 20 / 33 Category: Semiconductor Physics 20. Which is impurity for an N-type material Gallium Silicon Antimony Boron 21 / 33 Category: DC power supply 21. allows DC but it blocks AC Conductor Insulator None Inductor 22 / 33 Category: Semiconductor Physics 22. How many valance electrons are in a Pentavalent impurity? 3 5 4 6 23 / 33 Category: Semiconductor Physics 23. How many diodes in the Center-tap Full wave rectifier 4 1 2 6 24 / 33 Category: Semiconductor Physics 24. Semiconductors in pure forms known as Extrinsic Intrinsic 25 / 33 Category: Semiconductor Physics 25. The width of depletion layer in Reverse bias Constant Increase Decrease 26 / 33 Category: Semiconductor diode (PN junction) 26. Output frequency of a full wave rectifier is 50 Hz, What is input frequency 100hz 200hz 50hz 25hz 27 / 33 Category: Semiconductor Physics 27. A semiconductor has ……….Temperature Coefficient of resistance None Negative Zero Positive Negative Coefficient Means When increasing the temperature then the resistance will decrease 28 / 33 Category: Semiconductor Physics 28. What is the breakdown voltage of LED? 5.0V- 7.5V 10.2V- 20.5V 0.1V-0.3V 1.7V- 3.0V 29 / 33 Category: Semiconductor Physics 29. Most commonly used Rectifier is Center-tap full wave rectifier Full wave bridge rectifier Half wave rectifier 30 / 33 Category: Semiconductor diode (PN junction) 30. What is the work of a Zener Diode ? Varied current, Varied Voltage constant current, Varied voltage Constant current, constant voltage Varied current, Constant voltage 31 / 33 Category: Semiconductor Physics 31. Which of the following is not an active component RESISTOR SCR DIODE TRANSISTOR Hint ( For Ge energy band gap is 0.72eV) 32 / 33 Category: Semiconductor Physics 32. The energy band gap in silicon is..... 0.72eV 0.3eV 1.72eV 1.12eV 33 / 33 Category: DC power supply 33. The AC component present in output voltage is called None Switching regulator Ripple Non-linear regulators Your score isThe average score is 36% LinkedIn Facebook 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) Spread the love
