Q. In a common-emitter configuration, what is the phase relationship between input and output signals?
-
A.
In phase
-
B.
Out of phase
-
C.
No phase shift
-
D.
180 degrees out of phase
Solution
In a common-emitter configuration, the output signal is 180 degrees out of phase with the input signal.
Correct Answer:
D
— 180 degrees out of phase
Learn More →
Q. In a forward-biased diode, the majority carriers are:
-
A.
Electrons in the n-type region
-
B.
Holes in the p-type region
-
C.
Both electrons and holes
-
D.
None of the above
Solution
In a forward-biased diode, both electrons from the n-type region and holes from the p-type region are the majority carriers.
Correct Answer:
C
— Both electrons and holes
Learn More →
Q. In an operational amplifier, what is the purpose of negative feedback?
-
A.
To increase gain
-
B.
To stabilize the output
-
C.
To reduce distortion
-
D.
To increase bandwidth
Solution
Negative feedback in an operational amplifier is used to stabilize the output and control the gain.
Correct Answer:
B
— To stabilize the output
Learn More →
Q. In small-signal analysis, what does the term 'small-signal model' refer to?
-
A.
A model for large signals
-
B.
A linear approximation of a nonlinear device
-
C.
A model for digital signals
-
D.
A model for high-frequency signals
Solution
The small-signal model refers to a linear approximation of a nonlinear device, used for analyzing small variations around a bias point.
Correct Answer:
B
— A linear approximation of a nonlinear device
Learn More →
Q. In small-signal models, which parameter represents the transconductance of a FET?
Solution
The transconductance of a FET is represented by the parameter 'gm', which indicates the change in drain current with respect to gate-source voltage.
Correct Answer:
A
— gm
Learn More →
Q. What is the depletion region in a diode?
-
A.
The area where current flows
-
B.
The area with no charge carriers
-
C.
The area of maximum conductivity
-
D.
The area where voltage is applied
Solution
The depletion region in a diode is the area where there are no free charge carriers, formed at the junction of p-type and n-type materials.
Correct Answer:
B
— The area with no charge carriers
Learn More →
Q. What is the function of a rectifier?
-
A.
To amplify AC signals
-
B.
To convert AC to DC
-
C.
To filter noise
-
D.
To switch signals
Solution
A rectifier's primary function is to convert alternating current (AC) to direct current (DC).
Correct Answer:
B
— To convert AC to DC
Learn More →
Q. What is the function of an operational amplifier?
-
A.
To rectify AC signals
-
B.
To amplify voltage signals
-
C.
To switch electronic signals
-
D.
To store charge
Solution
An operational amplifier is designed to amplify voltage signals, making it a fundamental component in analog circuits.
Correct Answer:
B
— To amplify voltage signals
Learn More →
Q. What type of transistor is a BJT?
-
A.
Unipolar
-
B.
Bipolar
-
C.
Field-effect
-
D.
Insulated-gate
Solution
A BJT (Bipolar Junction Transistor) is a bipolar device that uses both electron and hole charge carriers.
Correct Answer:
B
— Bipolar
Learn More →
Q. Which type of transistor is a BJT?
-
A.
Unipolar
-
B.
Bipolar
-
C.
Field-effect
-
D.
Insulated-gate
Solution
A BJT (Bipolar Junction Transistor) is a bipolar device that uses both electron and hole charge carriers.
Correct Answer:
B
— Bipolar
Learn More →
Showing 1 to 10 of 10 (1 Pages)
