Electronic Devices and circuits Theory-Diode Applications
Electronic Devices and circuits Theory-Diode Applications
1. A silicon diode measures a low value of resistance with the meter leads in both positions. The trouble, if any, is
- the diode is open.
- the diode is shorted to ground.
- the diode is internally shorted.
- the diode is working correctly.
2. Single-element semiconductors are characterized by atoms with ____ valence electrons.
- 3
- 4
- 5
- 2
3. Under normal conditions a diode conducts current when it is
- reverse-biased.
- forward-biased.
- avalanched.
- saturated.
4. A diode conducts when it is forward-biased, and the anode is connected to the ________ through a limiting resistor.
- positive supply
- negative supply
- cathode
- anode
5. As the forward current through a silicon diode increases, the internal resistance
- increases.
- decreases.
- remains the same.
6. The movement of free electrons in a conductor is called
- voltage.
- current.
- recombination
- equilibrium.
7. For a forward-biased diode, the barrier potential ________ as temperature increases.
- decreases
- remains constant
- increases
8. The wide end arrow on a schematic indicates the ________ of a diode.
- ground
- direction of electron flow
- cathode
- anode
9. An n-type semiconductor material
- is intrinsic.
- has trivalent impurity atoms added.
- has pentavalent impurity atoms added
- requires no doping.
10. For a forward-biased diode, as temperature is ________, the forward current ________ for a given value of forward voltage.
- decreased, increases
- increased, increases
- increased, decreases
- decreased, decreases