Pinch off Voltage Vp MCQs : This section focuses on the "Pinch off Voltage Vp". These Multiple Choice Questions (MCQs) should be practiced to improve the Pinch off Voltage Vp skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.
Question 1
A p-channel Ge JFET has max-half channel width 5µm and channel conductivity of 2/Ωcm, if Er = 2000cm2/Vsec, What is the value of pinch off voltage?
A. 8.21V
B. 82.1V
C. 88.21V
D. 5.2V
Question 2
Find the current through gate if the FET was given with gate to source voltage =10V and drain to source voltage =20V, the pinch off voltage was -2V and ID=2mA.
A. 10mA
B. 20mA
C. 0mA
D. 2mA
Question 3
For a FET having IDSS=2mA Vgs=2V and Vp=-1V, What is the value of source current?
A. 9mA
B. 18mA
C. 3mA
D. 1mA
Question 4
For a n-channel FET, what is the condition of Vgs for which the current becomes zero?
A. 0
B. 100V
C. Vp
D. Infinite
Question 5
For what value of Vgs, the drain current will be 1/4th of its maximum current?
A. 0
B. 1
C. Vp
D. Vp/2
Question 6
How does a FET behave when the v-I characteristics are to the left of pinch off for an n channel FET?
A. Voltage controlled resistor
B. Amplifier
C. Switch
D. Diode
Question 7
If a FET has a pinch off voltage =-1V and ID=1mA, If Vgs=0V, What is the value of IDSS?
A. 1A
B. 1mA
C. 0A
D. 100mA
Question 8
What is pinch off voltage?
A. The minimum voltage required to turn on the FET
B. The maximum voltage a FET can withstand
C. Current amplification factor/voltage gain
D. The value of voltage at which the current gets pinched to zero
Question 9
What is the relation between the drain current and source current once the voltage crosses pinch off?
A. ID = IS
B. ID = IS + 1.5
C. ID = 1/IS
D. IS – 2ID = 0
Question 10
What will happen if gate voltage applied is positive to pinch off voltage?
A. Device burns
B. More current flows
C. Nothing happens
D. Current remains the same