SOLID STATE DEVICES-ECE REVIEWER
1. How many electrons are there in the fourth orbit of a copper atom?
A. 1
B. 2
C. 3
D. 4
2. The maximum permissible number of electrons in the third orbit is
A. 18
B. 8
C. 32
D. 2
3. Varactor diodes are commonly used
A. As voltage controlled capacitance
B. As a constant current source
C. As voltage multiplier
D. As a constant voltage source
4. The reason why electrons are not pulled into the nucleus of an atom.
A. Because of the centrifugal or outward force created by their orbital motion.
B. Because of the force of attraction between them and the nucleus is weak.
C. Because they are not being attracted by the positive nucleus.
D. Because of the strong bonding between them that resists any force pulling them
towards the nucleus.
5. The electrons in the largest orbit travel than the electrons in the smaller orbits.
A. More slowly
B. Faster
C. In the same velocity
D. A little bit slower
,SOLID STATE DEVICES-ECE REVIEWER
6. A transistor configuration with the lowest current gain.
A. Common base
B. Common emitter
C. Common collector
D. Emitter-follower
,SOLID STATE DEVICES-ECE REVIEWER
7. A semiconductor in its purest form is called
A. Pure semiconductor
B. Doped semiconductor
C. Intrinsic semiconductor
D. Extrinsic semiconductor
8. Valence orbit is the other form for
A. Outer orbit
B. 3rd orbit
C. 4th orbit
D. 2nd orbit
9. K shell means
A. First orbit
B. 2nd orbit
C. 3rd orbit
D. 4th orbit
10. For either germanium or silicon diodes, the barrier potential decreases for each
Celsius degree rise.
A. 1 mV
B. 3 mV
C. 4 mV
D. 2 Mv
11. A diode modeling circuit which considers the threshold voltage, average resistance and
switch as the diode's equivalent circuit.
A. Ideal model
B. Simplified model
C. Piecewise linear model
D. Real model
, SOLID STATE DEVICES-ECE REVIEWER
12. There are two mechanisms by which holes and electrons move through a silicon crystal.
They are
A. Covalent bond and recombination
B. Diffusion and drift
C. Free and charge particles
D. Forward and reverse bias
1. How many electrons are there in the fourth orbit of a copper atom?
A. 1
B. 2
C. 3
D. 4
2. The maximum permissible number of electrons in the third orbit is
A. 18
B. 8
C. 32
D. 2
3. Varactor diodes are commonly used
A. As voltage controlled capacitance
B. As a constant current source
C. As voltage multiplier
D. As a constant voltage source
4. The reason why electrons are not pulled into the nucleus of an atom.
A. Because of the centrifugal or outward force created by their orbital motion.
B. Because of the force of attraction between them and the nucleus is weak.
C. Because they are not being attracted by the positive nucleus.
D. Because of the strong bonding between them that resists any force pulling them
towards the nucleus.
5. The electrons in the largest orbit travel than the electrons in the smaller orbits.
A. More slowly
B. Faster
C. In the same velocity
D. A little bit slower
,SOLID STATE DEVICES-ECE REVIEWER
6. A transistor configuration with the lowest current gain.
A. Common base
B. Common emitter
C. Common collector
D. Emitter-follower
,SOLID STATE DEVICES-ECE REVIEWER
7. A semiconductor in its purest form is called
A. Pure semiconductor
B. Doped semiconductor
C. Intrinsic semiconductor
D. Extrinsic semiconductor
8. Valence orbit is the other form for
A. Outer orbit
B. 3rd orbit
C. 4th orbit
D. 2nd orbit
9. K shell means
A. First orbit
B. 2nd orbit
C. 3rd orbit
D. 4th orbit
10. For either germanium or silicon diodes, the barrier potential decreases for each
Celsius degree rise.
A. 1 mV
B. 3 mV
C. 4 mV
D. 2 Mv
11. A diode modeling circuit which considers the threshold voltage, average resistance and
switch as the diode's equivalent circuit.
A. Ideal model
B. Simplified model
C. Piecewise linear model
D. Real model
, SOLID STATE DEVICES-ECE REVIEWER
12. There are two mechanisms by which holes and electrons move through a silicon crystal.
They are
A. Covalent bond and recombination
B. Diffusion and drift
C. Free and charge particles
D. Forward and reverse bias
