# Characteristics of JFET Online Exam Quiz

Characteristics of JFET GK Quiz. Question and Answers related to Characteristics of JFET. MCQ (Multiple Choice Questions with answers about Characteristics of JFET

### A P-channel JFET is___

**Options**

A : Always ON

B : Always OFF

C : Depletion mode JFET

D : Has an n-type substrate

### An N-channel JFET is ___

**Options**

A : Always ON

B : Always OFF

C : Enhancement mode JFET

D : Has a p-type substrate

### Consider the circuit provided. Total discharge time = 0.5 ms. Consider the diode to be an ideal diode, for a square wave input of ? 10 V, what is the percentage tilt? (C = 1MF & R = 50k Ohms)^

**Options**

A : 10%

B : 1%

C : 0.10%

D : 1.10%

### Given input for the circuit is f = 1 KHz.^^ Diode cut-in voltage = 0.7 V^^ Output waveform:^^ For the given output, find V1 and discharge time?

**Options**

A : 4.3 V, 1ms

B : 4V, 0.5ms

C : 4.3V, 0.5ms

D : 5.7V, 1ms

### How is the metallurgical channel thickness between the gate and the substrate related to the doping concentration of the channel?

**Options**

A : Inversely proportional to the square root of the doping concentration

B : Logarithmically related to the square root of the doping concentration

C : Directly proportional to the square root of the doping concentration

D : Exponentially related to the square root of the doping concentration

### How is the transconductance at saturation related to the pinch off voltage of the JFET?

**Options**

A : Inversely proportional

B : Directly proportional

C : Inverse-squarely related

D : Directly and proportional to square of the pinch-off voltage

### If channel thickness increases, the internal pinch-off voltage ___

**Options**

A : Decreases

B : Increases

C : Remains the same

D : Increases logarithmically

### If the doping concentration of the gate increases, the internal pinch-off voltage ___

**Options**

A : Increases logarithmically

B : Increases linearly

C : Increases exponentially

D : Decreases linearly

### In the given circuit, given that C=2MF and diode cut-in voltage, V? =0. Calculate the average output voltage.^

**Options**

A : 2V

B : 4V

C : -2V

D : -3V

### The cut-off frequency of a JFET is ___

**Options**

A : linearly related to the transconductance of the JFET

B : inversely proportional to the transconductance of the JFET

C : exponentially related to the transconductance of the JFET

D : logarithmically related to the transconductance of the JFET

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