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