Explore topic-wise MCQs in Alternating Current vs Direct Current .

This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Alternating Current vs Direct Current knowledge and support exam preparation. Choose a topic below to get started.

1.

What is the transconductance of an FET when I D = 1 mA and V GS = 1 V?

A. 1 kS
B. 1 mS
C. 1 k
D. 1 m
Answer» C. 1 k
Discussion
2.

Using voltage-divider biasing, what is the voltage at the gate V GS ?

A. 5.2 V
B. 4.2 V
C. 3.2 V
D. 2.2 V
Answer» B. 4.2 V
Discussion
3.

When V GS = 0 V, a JFET is:

A. saturated
B. an analog device
C. an open switch
D. cut off
Answer» B. an analog device
Discussion
4.

With a 30-volt V DD , and an 8-kilohm drain resistor, what is the E-MOSFET Q point voltage, with I D = 3 mA?

A. 6 V
B. 10 V
C. 24 V
D. 30 V
Answer» B. 10 V
Discussion
5.

I DSS can be defined as:

A. the minimum possible drain current
B. the maximum possible current with V GS held at –4 V
C. the maximum possible current with V GS held at 0 V
D. the maximum drain current with the source shorted
Answer» D. the maximum drain current with the source shorted
Discussion
6.

In the constant-current region, how will the I DS change in an n-channel JFET?

A. As V GS decreases I D decreases.
B. As V GS increases I D increases.
C. As V GS decreases I D remains constant.
D. As V GS increases I D remains constant.
Answer» B. As V GS increases I D increases.
Discussion
7.

When testing an n-channel D-MOSFET, resistance G to D = , resistance G to S = , resistance D to SS = and 500 , depending on the polarity of the ohmmeter, and resistance D to S = 500 . What is wrong?

A. short D to S
B. open G to D
C. open D to SS
D. nothing
Answer» E.
Discussion