Explore topic-wise MCQs in Electronic Devices.

This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Electronic Devices knowledge and support exam preparation. Choose a topic below to get started.

1.

A self-biased n-channel JFET has a V = 6 V. V = –3 V. Find the value of V.

A. –3 V
B. –6 V
C. 3 V
D. 6 V
Answer» D. 6 V
Discussion
2.

For a JFET, the value of V at which I becomes essentially constant is the

A. pinch-off voltage.
B. cutoff voltage.
C. breakdown voltage.
D. ohmic voltage.
Answer» B. cutoff voltage.
Discussion
3.

Midpoint bias for a D-MOSFET is I = ________, obtained by setting V = 0.

A. I
B. / 2
C. I
D. / 3.4
E. I
Answer» D. / 3.4
Discussion
4.

On the drain characteristic curve of a JFET for V = 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» C. between the constant current area and the breakdown region.
Discussion
5.

The value of V that makes I approximately zero is the

A. pinch-off voltage.
B. cutoff voltage.
C. breakdown voltage.
D. ohmic voltage.
Answer» C. breakdown voltage.
Discussion
6.

What three areas are the drain characteristics of a JFET (V = 0) divided into?

A. ohmic, constant-current, breakdown
B. pinch-off, constant-current, avalanche
C. ohmic, constant-voltage, breakdown
Answer» B. pinch-off, constant-current, avalanche
Discussion
7.

A JFET data sheet specifies V = –6 V and I = 8 mA. Find the value of I when V = –3 V.

A. 2 mA
B. 4 mA
C. 8 mA
D. none of the above
Answer» B. 4 mA
Discussion
8.

A JFET data sheet specifies V = –10 V and I = 8 mA. Find the value of I when V = –3 V.

A. 2 mA
B. 1.4 mA
C. 4.8 mA
D. 3.92 mA
Answer» E.
Discussion
9.

If V is less than expected (normal) for a self-biased JFET circuit, then it could be caused by a(n)

A. open R
B. .
C. open gate lead.
D. FET internally open at gate.
E. all of the above
Answer» E. all of the above
Discussion
10.

In a self-biased JFET circuit, if V = V then I = ________.

A. 0
B. cannot be determined from information above
Answer» B. cannot be determined from information above
Discussion
11.

When biased as a variable resistor, JFET resistance (R) increases as V becomes more negative.

A. True
B. False
Answer» B. False
Discussion
12.

An E-MOSFET can be operated with either positive or negative values of V.

A. True
B. False
Answer» C.
Discussion