| 1. | The graph of current gain versus collector-current indicates that the current gain ? | |
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Is constant
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Varies slightly
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Varies significantly
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Equals the collector current divided by the base current
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Report Question| 2. | A BJT is in the saturation region if ? | |
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Base emitter junction is reverse-biased and base-collector junction is forward-biased
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Both the junctions are reverse-biased
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Both the junctions are forward-biased
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Base-emitter junction is forward-biased and base-collector junction is reverse-biased
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| 3. | A transistor, when connected in CE mode, has ? | |
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Low input resistance and low output resistance
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High input resistance and high output resistance
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High input resistance and low output resistance
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A medium input resistance and high output resistance
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| 4. | If the base resistor is open, what is the collector current ? | |
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0
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1 mA
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2 mA
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10 Ma
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| 5. | In a normally biased NPN transistor, the electrons in the emitter have enough energy to overcome the barrier potential of the ? | |
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Base-emitter junction
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Base-collector junction
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Collector-base junction
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Recombination path
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| 6. | If a transistor operates at the middle of the load line, an increase in the base resistance will move the Q-point ? | |
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Down
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Up
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No where
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off the load line
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| 7. | ...... is the current that flows when some DC voltage is applied ? | |
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In the forward direction to the emitter junction with collector open
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In the reverse direction to the emitter Junction with collector open
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In the reverse direction to the collector Junction with emitter open
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Is the forward direction to the collector Junction with emitter open
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| 8. | The base of an NPN transistor is thin and ? | |
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Heavily doped
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Lightly doped
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Metallic
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Doped by a pentavalent material
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| 9. | As the temperature increases, the current gain ? | |
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Decreases
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Remains the same
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Increases
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Can be any of the above
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| 10. | Increasing the collector supply voltage will increase ? | |
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Base current
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Collector current
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Emitter current
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None of the above
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