Quiz  /  RL Circuits Gate & PSU MCQ Questions With Answers

  • 1. 
    Which of the following effects is responsible for violating the mass action law indegenerative type semiconductor electronic devices?

  • Thermal effect
  • Bandgap narrowing effect
  • Lattice vibration effect
  • Electronic drift effect

  • 2. 
    Which of the following is not a physical component of an electronic circuit?

  • Capacitor
  • Inductor
  • Diode
  • Temperature

  • 3. 
    A voltage will influence current only if the circuit is:

  • OPEN
  • INSULATED
  • HIGH RESISTANCE
  • CLOSED

  • 4. 
    The switch in the figure below was closed for a long time. It is opened at t = 0. The current in the inductor of 2 H for t ≥ 0, is

  • 2.5e -4t
  • 5e -4t
  • 2.5e -0.25t
  • 5e -0.25t

  • 5. 
    What type of semiconductor is used in LED electronic circuits?

  • Intrinsic semiconductor
  • Compound semiconductor
  • Degenerate semiconductor
  • Compensated semiconductor

  • 6. 
    The deviation in the resistance of a resistor is known as

  • tolerance
  • capacitance
  • inductance
  • none of the above

  • 7. 
    A series R-C circuit consists of resistor of 10 and capacitor of 0.1F as shown in the figure. A constant voltage of 20V is applied to the circuit at t = 0. What is the current in the circuit at t = 0?

  • 1
  • 2
  • 3
  • 4

  • 8. 
    Ceramic rings are used as _______.

  • Bonding agent
  • Strong coupler
  • Impedance regulator
  • Insulator

  • 9. 
    An electronic component used to store electric charge is

  • inductor
  • resistor
  • capacitor
  • none of these

  • 10. 
    When the temperature of the semi-conductor is increased, the conductivity will …

  • decreases
  • increases
  • same every time
  • all of the above

  • 11. 
    A series R-L circuit with R = 30Ω and L = 15H has a constant voltage V = 60V applied at t = 0 as shown in the figure. Determine the current (A) in the circuit at t = 0+.

  • 1
  • 2
  • 3
  • 0

  • 12. 
    In figure the switch was closed for a long time before opening at t=0. The voltage Vx at t=0+ will be( Gate question)

  • 25 V
  • 50 V
  • – 50 V
  • 0 V

  • 13. 
    Which of the following is the correct relationship between temperature (T) and mobility (u) of electrons in electronic circuits?

  • u ∝ T-3/2
  • u ∝ T-1/2
  • u ∝ T
  • u ∝ T-1

  • 14. 
    We can construct exclusive -OR gate using which other gates?

  • AND, NOT  and  OR gate only
  • AND and NAND gate only
  • OR gate only
  • all of these

  • 15. 
    As frequency increases

  • both series and parallel RL impedance decrease
  • series RL impedance decreases and parallel RL  impedance increases
  • series RL impedance increases and parallel RL  impedance decreases
  • both series and parallel RL impedance increase

  • 16. 
    Mass action law is not valid for which type of semiconductors in electronic devices?

  • Compound
  • Elemental
  • Degenerative
  • Compensated

  • 17. 
    When a PN junction is forward biased

  • Depletion region decreases
  • Minority carries are not Attested
  • Holes and electrons move away from junction
  • All of above

  • 18. 
    Which resistive component is designed to be temperature sensitive?

  • Thermistor
  • Rheostat
  • Potentiometer
  • Photoconductive cell
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