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