Forward current through a semi conductor diode circuit is due to____________?

Related Mcqs:

1. A current carrying conductor is placed in a uniform magnetic field parallel to it. The magnetic force experienced by the conductor is _____________________?

   A. F=1/B
   B. F=1/Bsinθ
   C. F/0
   D. F=1/Bcosθ

2. Semi-conductor germanium and silicon are_________________?

   A. pentavalent
   B. trivalent
   C. divalent
   D. tetravalent

3. The specially designed semi-conductor diodes used as fast counters in electronic circuits are______________?

   A. The light emitting diodes
   B. Photo diodes
   C. Photo voltaic cell
   D. Solar cells.

4. To obtain a p-type semi-conductor Si Crystal must be doped with foreign atoms whose valency is_____________?

   A. 2
   B. 3
   C. 4
   D. 5

5. The specially designed semi-conductor diodes used as fast counters in electronic circuits are_______________?

   A. The light emitting diodes
   B. Photo diodes
   C. Photo voltaic cell
   D. Solar cells.

6. The current through a metallic conductor is due to the motion of _________________?

   A. free electrons
   B. protons
   C. neutrons
   D. still under controversy

7. Production of heat due to an electric current flowing through a conductor is given by _________________?

   A. Joule effect
   B. Joule Thomsons effect
   C. Comptons effect
   D. Feed back effect

8. If capacitance of L-C circuit is made four times then frequency of the circuit becomes___________________?

   A. Twice
   B. One half
   C. Four times
   D. None

9. An A.C series circuit containing 4Ω resistance and 3Ω inductive reactance. The impedance of the circuit is______________?

   A. 1Ω
   B. 5Ω
   C. 7Ω
   D. 7Ω

10. An alternating current of the r.m.s value of 4.0 A and frequency 50Hz flows in a circuit containing a 10Ω resistor. The peak current is then ?

    A. 20A
    B. 20.66A
    C. 6.66A
    D. 5.66A