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Unit 18: Electronics

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Question 1 of 20 0% read

1. Which region of a transistor is lightly doped?

A Emitter
B Collector
C Base
D All equally doped

2. Which charge carriers are majority carriers in N-type semiconductors?

A Holes
B Protons
C Electrons
D Neutrons

3. When a diode is forward biased, it:

A Offers high resistance
B Does not conduct
C Conducts current
D Breaks down

4. Which biasing allows maximum current through a diode?

A Reverse biasing
B Zero biasing
C Forward biasing
D Negative biasing

5. A qubit can exist in:

A Only 0 state
B Only 1 state
C Both 0 and 1 simultaneously
D No state

6. Which logic gate inverts the input?

A AND
B OR
C XOR
D NOT

7. In digital electronics, logic 1 usually represents:

A Zero voltage
B Negative voltage
C High voltage
D No signal

8. The main advantage of digital electronics is:

A Complexity
B Noise immunity
C High cost
D Large size

9. Which device is considered the brain of digital systems?

A Relay
B Logic gate
C Resistor
D Transformer

10. The main function of a diode is to:

A Amplify signals
B Store charge
C Allow current in one direction
D Reduce voltage

11. The basic unit of information in quantum computing is:

A Bit
B Qubit
C Byte
D Gate

12. In reverse biasing of a diode, the width of depletion region:

A Decreases
B Remains same
C Disappears
D Increases

13. Which material is commonly used as a semiconductor?

A Copper
B Silicon
C Aluminium
D Iron

14. The basic unit of digital information is:

A Byte
B Bit
C Word
D Nibble

15. A relay is an electrically operated:

A Capacitor
B Switch
C Resistor
D Battery

16. Which impurity is added to make a P-type semiconductor?

A Pentavalent
B Trivalent
C Hexavalent
D Divalent

17. In a transistor, current amplification occurs due to:

A Large base current
B Small base current
C No base current
D High voltage

18. Which device converts electrical signals into light?

A Diode
B Transistor
C LED
D Relay

19. The majority charge carriers in P-type material are:

A Electrons
B Ions
C Holes
D Neutrons

20. Which logic gate gives output 1 when inputs are different?

A AND
B OR
C XOR
D NOR

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