6) For a forward biased diiode rated at 50 mW with a series resistor of 100 Ohms

Question

6) For a forward biased diiode rated at 50 mW with a series resistor of 100 Ohms, which of the following is possible for the current in the diode? 6) A) 50 A B) 80 mA C) 50 HA D) 0 7) A Zener diode of nominal zener voltage 6.2 V is operated in forward-biased mode. Pick the correct ) statement of the following? A) voltage drop on the Zener is 6.2 V+0.7 V. C) The Zener is in cut-off. B) Zener conducts no current. D) none the current through a Zener diode as voltage regulator, the the de resistance level. D) lower, lower 8) A) higher, lower B) lower, higher C) higher, higher 9) 9) For a certain BJT operated by 9 V collector bias, what is the collector cuurent if the voltage beween the collector and emitter is 9 V? B) 0 V. C) 0.7 mA D) 9 mA A) 9 v 10) 10) In a BIT set in active mode, the emitter current is 5.5 mA. What is the ac resistance of the emitte diode? D) 4.5 Ohms C) 25 mV B) same as RE A) 5.5 K Ohms self-biase A) -3 V. 11) J d n-channel JFET has a drain voltage of 8 V, and the voltage between gate and source is 11) A self-biased drain D) 8 V. oltage between drain and sourece of the JFET? C) 3 V. -5.0 V. What is the B) -5 V. 12) 12) A MOSFET switch is turned on and off by changing the source voltage

Explanation / Answer

6. Power = I^2 x R so for power dissipation less than 50mw with given resistance 100 ohm only option C is possible.

7. None as in forward biasing zener diode behaves like a normal diode

8.the higher the current through zener diode as voltage regulator lower will be the dc resistance level.

9. As the CB = 9v as CE =9v therfore there is no biasing of BE junction and collector current will be zero.

10. re = 26 mv / Ie = 26 / 5.5 = 4.7 therefore option D is correct

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