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