Solid State Devices

41. A transistor configuration with the lowest current gain.

1. Common base
2. Common emitter
3. Common collector
4. Emitter-follower

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42. A unijunction transistor is a three terminal consisting of _________ semiconductor layers.

1. One
2. Two
3. Three
4. Four

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43. A volt-ampere characteristic curve that describes the relationship of the output voltage of a transistor to its output current is a set input current.

1. Input characteristic
2. Output characteristic
3. Load line
4. Saturation curve

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44. An acceptor atom contains how many valence electrons?

1. 1
2. 2
3. 3
4. 4

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45. An acceptor atom is also called

1. Pentavalent atom
2. Trivalent atom
3. Minority carrier
4. Majority carrier

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46. An amplifier has an output power of 3 watts. Determine the power output level with reference to 1 mW.

1. 34.77 dBm
2. 40 dBm
3. -30 dBm
4. -40 dBm

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47. An effect that occurs within the entire bulk of a semiconductor material rather than in a localized region or junction

1. Silicon effect
2. Dember effect
3. Bulk effect
4. Destriau effect

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48. An electron in the conduction band

1. Losses its charge easily
2. Jumps to the tip of the crystal
3. Has higher energy than the electron in the valence band
4. Has lower energy that the electron in the valence band

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49. An emitter resistor is used for _________ in most amplifier circuits.

1. Temperature stabilization
2. Biasing a bipolar junction transistor
3. Current limitation
4. Voltage amplification

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50. An energy band in which electrons can move freely

1. Valence band
2. Conduction band
3. Energy gap
4. Insulation gap

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