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