Exercise: Field Effect Transistors

Questions for: Field Effect Transistors

The value of VGS that makes ID approximately zero is the
A:
pinch-off voltage.
B:
cutoff voltage.
C:
breakdown voltage.
D:
ohmic voltage.
Answer: B
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Which of the following devices has the highest input resistance?
A:
diode
B:
JFET
C:
MOSFET
D:
bipolar junction transistor
Answer: C
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Refer to figure given below. Determine the value of VGS.

A:
–20 V
B:
–8 V
C:
–6 V
D:
–2 V
Answer: C
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Refer to the given figure. ID = 6 mA. Calculate the value of VDS.

A:
–6 V
B:
6 V
C:
12 V
D:
–3 V
Answer: B
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On the drain characteristic curve of a JFET for VGS = 0, the pinch-off voltage is
A:
below the ohmic area.
B:
between the ohmic area and the constant current area.
C:
between the constant current area and the breakdown region.
D:
above the breakdown region.
Answer: B
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