| 1. | What is the most important fact about the collector current ? | |
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It is measured in milliamperes
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It equals the base current divided by the current gain
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It is small
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It approximately equals the emitter current
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Report Question| 2. | The arrowhead on the transistor symbol points In the direction of ? | |
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Electrons flow in the emitter region
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Minority Carriers flow in the emitter region
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Majority carriers flow in the emitter region
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Conventional current flow in the emitter region
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| 3. | Beta ? is the symbol of current gain for ? | |
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Common-base mode
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Common-emitter mode
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Common-collector mode
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None of the above
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| 4. | In an NPN transistor with normal bias ? | |
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Only holes cross the collector junction
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Only the majority carries cross the collection junction
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The emitter junction has a high resistance
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The emitter junction is forward biased and collector junction is reverse biased
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| 5. | The current Iceo ? | |
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The emitter current in the CC connected transistor with zero base current
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The collector current in CE connected transistor with zero emitter current
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The collector current in the CE connected transistor with zero base current
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Same as ICBO
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| 6. | In a bipolar transistor at room temperature, if the emitter current across its base emitter junction: ? | |
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Doubles
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Halves
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Increases by 20 mV
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No change occurs
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| 7. | Emitter of transistor is doped ? | |
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Heavily
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Lightly
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Moderately
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None of these
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| 8. | The beta of transistor maybe determined directly from the curve plotted between ? | |
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VCE and IC for constant IB
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VCE and IC for constant IE
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VCE and IE for constant IB
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VBE and IE for constant VCE
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| 9. | The modulation of effective base width by collector voltage is known as Early Effect; hence reverse collector voltage ? | |
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Increases both ? and ?
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Decreases both ? and ?
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Increases ? but decreases ?
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Decreases ? but increases ?
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| 10. | The barrier potential across each silicon depletion layer is ? | |
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0 V
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0.3 V
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0.7 V
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1 V
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