| 1. | A device having characteristics very close to that of an ideal voltage source is ? | |
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zener diode
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FET
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transistor
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vacuum diode
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Report Question| 2. | At the cutt in voltage of a diode ? | |
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the diode almost behaves like a short
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the potential barrier is overcome and the current through the junction starts to increase rapidly
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the potential barrier is strong and the current through the junction is blocked
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(a) and (c) above
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| 3. | Schottky barrier diode can be used ? | |
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in communication receivers and radar
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as switching power supplies operating at frequencies of 20 GHz
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in clipping and clamping
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all of the above
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| 4. | For harmonic generation, the diode that can be used is ? | |
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P-N junction diode
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Backward diode
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Varactor diode
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Tunnel diode
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| 5. | A BIT is said to be operating in the saturation region if ? | |
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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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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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| 6. | Icbo in a transistor can be reduced by reducing ? | |
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Ie
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temperature
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Ib
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Vcc
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| 7. | Which one of the following statements is correct, The set of transistor characteristics that enables a to be directly determined from the slope is ? | |
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the common-base input characteristics
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the common-emitter transfer characteristics
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the common-base transfer characteristics
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the common-emitter output characteristics
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| 8. | The modulation of effective base width by collector voltage known as Early Effect. Hence reverse collector voltage ? | |
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decreases bets hot increases alpha
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decreases both alpha and beta
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increases both alpha and beta
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increases alpha but decreases beta
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| 9. | The output impedance of a BJT under common-collector configuration is ? | |
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high
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low
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very high
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medium
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| 10. | In a common collector amplifier the voltage gain is ? | |
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varies with input voltage
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varies with load impedance
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constant
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less than 1
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