Quiz for Semiconductors and Electronics

Q1: What type of material is Silicon?

A. Insulator B. Conductor C. Semiconductor D. Dielectric

Q2: What happens to the resistance of a semiconductor when temperature increases?

A. Increases B. Decreases C. Remains same D. Becomes infinite

Q3: What is the majority carrier in an n-type semiconductor?

A. Electrons B. Holes C. Neutrons D. Protons

Q4: What is the typical band gap of Silicon?

A. 1.1 eV B. 2.0 eV C. 0.7 eV D. 3.2 eV

Q5: Which diode is used for voltage regulation?

A. LED B. Zener Diode C. PN Junction D. Tunnel Diode

Q6: Which logic gate outputs 0 when all inputs are 1?

A. AND B. OR C. NAND D. NOR

Q7: What is the output of a NOT gate when input is 1?

A. 1 B. 0 C. Depends on voltage D. Error

Q8: Which semiconductor device is used to amplify signals?

A. Diode B. Resistor C. Transistor D. Capacitor

Q9: What is the unit of current gain in a transistor?

A. No units B. Ohm C. Ampere D. Dimensionless

Q10: In forward bias, the PN junction diode offers:

A. High resistance B. Zero resistance C. Low resistance D. Infinite resistance

Q11: LEDs emit light due to:

A. Recombination of charge carriers B. Thermal emission C. Magnetic field D. Ionization

Q12: What is doping in semiconductors?

A. Heating B. Adding impurities C. Cooling D. Melting

Q13: The device that converts AC to DC is called:

A. Amplifier B. Transformer C. Rectifier D. Inverter

Q14: Which material is commonly used in LEDs?

A. Silicon B. Gallium Arsenide C. Germanium D. Copper

Q15: Transistors are made of:

A. Two PN junctions B. Three capacitors C. One resistor and diode D. Only metal

Q16: The base of a transistor is:

A. Thick and heavily doped B. Thin and lightly doped C. Thick and lightly doped D. Thin and heavily doped

Q17: What is the function of a capacitor in a circuit?

A. Store charge B. Amplify signals C. Generate current D. Rectify voltage

Q18: Which of the following is a unipolar device?

A. BJT B. FET C. Diode D. Thyristor

Q19: Which terminal in a transistor controls the current?

A. Emitter B. Base C. Collector D. Cathode

Q20: In a digital circuit, binary "1" usually corresponds to:

A. Low voltage B. Zero voltage C. High voltage D. Negative voltage