17 The pinchoff voltage has the same magnitude as the A gat

17. The pinch-off voltage has the same magnitude as the _____. A. gate voltage. B. gate-source cutoff voltage. C. gate-source voltage. D. drain-source voltage.

18. A Schottky diode is a diode that _____. A. varies its resistance with temperature. B. changes its capacitance with voltage. C. emits light when forward-biased. D. switches very fast.   E. exhibits an increase in reverse current with light intensity.

19. If the load resistance decreases in a zener regulator, the zener current _____. A. equals the source voltage divided by the series resistance. B. stays the same. C. increases. D. decreases.

20. A circuit with a fixed emitter current is called_____. A. base-bias. B. one-supply bias. C. emitter-bias. D. grid-bias.

Solution

17 Ans) -B--Gate to source cutt-off voltage

Reason: In a JFET as the Gate voltage ( -VGS ) is made more negative, the width of the channel decreases until no more current flows between the Drain and the Source and the JFET is said to be “pinched-off” The Gate-to-Source voltage at which the channel closes is called the “pinch-off voltage. ( VP ) which is also called as Gate-source cutt-off Voltage

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