Q. What is the function of a rectifier in an electronic circuit?
-
A.
To amplify signals
-
B.
To convert AC to DC
-
C.
To filter noise
-
D.
To switch currents
Solution
A rectifier converts alternating current (AC) to direct current (DC), which is essential for many electronic devices.
Correct Answer:
B
— To convert AC to DC
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 (op-amp)?
-
A.
To rectify AC signals
-
B.
To amplify voltage signals
-
C.
To switch electronic signals
-
D.
To store charge
Solution
An operational amplifier (op-amp) is designed to amplify voltage signals, making it a fundamental building block in analog electronics.
Correct Answer:
B
— To amplify voltage signals
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 is the ideal open-loop gain of an operational amplifier?
-
A.
1
-
B.
100
-
C.
1000
-
D.
Infinity
Solution
The ideal open-loop gain of an operational amplifier is considered to be infinity.
Correct Answer:
D
— Infinity
Learn More →
Q. What is the input impedance characteristic of a FET?
-
A.
Low input impedance
-
B.
High input impedance
-
C.
Variable input impedance
-
D.
Zero input impedance
Solution
FETs are known for their high input impedance, which makes them suitable for use in high-impedance applications.
Correct Answer:
B
— High input impedance
Learn More →
Q. What is the main advantage of using a FET over a BJT?
-
A.
Higher current gain
-
B.
Lower input impedance
-
C.
Higher input impedance
-
D.
Better thermal stability
Solution
Field Effect Transistors (FETs) have a higher input impedance compared to BJTs, making them suitable for high-impedance applications.
Correct Answer:
C
— Higher input impedance
Learn More →
Q. What is the main advantage of using a MOSFET over a BJT?
-
A.
Higher current handling
-
B.
Lower power consumption
-
C.
Better linearity
-
D.
Higher voltage ratings
Solution
MOSFETs typically have lower power consumption due to their voltage-driven operation compared to current-driven BJTs.
Correct Answer:
B
— Lower power consumption
Learn More →
Q. What is the main advantage of using a Schottky diode?
-
A.
Higher reverse voltage
-
B.
Lower forward voltage drop
-
C.
Higher current rating
-
D.
Better thermal stability
Solution
Schottky diodes have a lower forward voltage drop compared to standard diodes, making them efficient for high-speed applications.
Correct Answer:
B
— Lower forward voltage drop
Learn More →
Q. What is the main advantage of using FETs in modulation circuits?
-
A.
Higher power handling
-
B.
Lower noise levels
-
C.
Higher gain
-
D.
Better thermal stability
Solution
FETs generally have lower noise levels compared to BJTs, making them suitable for modulation.
Correct Answer:
B
— Lower noise levels
Learn More →
Q. What is the main advantage of using FETs over BJTs?
-
A.
Higher current gain
-
B.
Lower input impedance
-
C.
Higher input impedance
-
D.
Lower power consumption
Solution
FETs have a higher input impedance compared to BJTs, making them suitable for high-impedance applications.
Correct Answer:
C
— Higher input impedance
Learn More →
Q. What is the main advantage of using MOSFETs over BJTs?
-
A.
Higher current gain
-
B.
Lower power consumption
-
C.
Better thermal stability
-
D.
Higher voltage ratings
Solution
MOSFETs generally have lower power consumption compared to BJTs, making them more efficient in many applications.
Correct Answer:
B
— Lower power consumption
Learn More →
Q. What is the main characteristic of a BJT in the active region?
-
A.
It acts as a switch
-
B.
It can amplify current
-
C.
It has high input impedance
-
D.
It is always in saturation
Solution
In the active region, a BJT can amplify current, making it useful in amplification applications.
Correct Answer:
B
— It can amplify current
Learn More →
Q. What is the main characteristic of a common-emitter BJT configuration?
-
A.
High input impedance
-
B.
Inverted output
-
C.
Low voltage gain
-
D.
No phase shift
Solution
The common-emitter configuration provides an inverted output, meaning the output signal is 180 degrees out of phase with the input.
Correct Answer:
B
— Inverted output
Learn More →
Q. What is the main characteristic of a Schottky diode?
-
A.
High reverse breakdown voltage
-
B.
Low forward voltage drop
-
C.
High current gain
-
D.
Temperature stability
Solution
A Schottky diode is known for its low forward voltage drop, making it efficient for high-speed switching applications.
Correct Answer:
B
— Low forward voltage drop
Learn More →
Q. What is the main difference between N-channel and P-channel MOSFETs?
-
A.
The type of charge carriers
-
B.
The gate voltage requirements
-
C.
The switching speed
-
D.
The thermal stability
Solution
The main difference between N-channel and P-channel MOSFETs is the type of charge carriers; N-channel uses electrons while P-channel uses holes.
Correct Answer:
A
— The type of charge carriers
Learn More →
Q. What is the main purpose of an operational amplifier (op-amp)?
-
A.
To rectify AC signals
-
B.
To amplify voltage signals
-
C.
To switch electronic circuits
-
D.
To store charge
Solution
The main purpose of an operational amplifier (op-amp) is to amplify voltage signals, often used in various analog applications.
Correct Answer:
B
— To amplify voltage signals
Learn More →
Q. What is the main role of the gate terminal in a MOSFET?
-
A.
To control the current flow
-
B.
To provide power supply
-
C.
To connect to the load
-
D.
To ground the circuit
Solution
The gate terminal in a MOSFET controls the current flow between the drain and source terminals.
Correct Answer:
A
— To control the current flow
Learn More →
Q. What is the output voltage of a voltage follower configuration when the input voltage is 5V?
-
A.
0V
-
B.
2.5V
-
C.
5V
-
D.
10V
Solution
In a voltage follower configuration, the output voltage equals the input voltage, so it is 5V.
Correct Answer:
C
— 5V
Learn More →
Q. What is the output voltage of an operational amplifier if the non-inverting input is at 2V and the inverting input is at 1V?
-
A.
0V
-
B.
1V
-
C.
2V
-
D.
Saturation voltage
Solution
If the non-inverting input is higher than the inverting input, the output will go to saturation, typically the supply voltage.
Correct Answer:
D
— Saturation voltage
Learn More →
Q. What is the primary application of an operational amplifier (op-amp) in circuits?
-
A.
Signal amplification
-
B.
Rectification
-
C.
Voltage regulation
-
D.
Current limiting
Solution
Operational amplifiers are primarily used for signal amplification in various electronic circuits.
Correct Answer:
A
— Signal amplification
Learn More →
Q. What is the primary characteristic of a depletion-mode FET?
-
A.
It is normally on
-
B.
It is normally off
-
C.
It has a negative temperature coefficient
-
D.
It requires a positive gate voltage to conduct
Solution
A depletion-mode FET is normally on, meaning it conducts current without any gate voltage applied, and requires a negative gate voltage to turn off.
Correct Answer:
A
— It is normally on
Learn More →
Q. What is the primary characteristic of a voltage follower configuration using an operational amplifier?
-
A.
High gain
-
B.
Low gain
-
C.
Unity gain
-
D.
Negative gain
Solution
The primary characteristic of a voltage follower configuration is that it provides unity gain.
Correct Answer:
C
— Unity gain
Learn More →
Q. What is the primary characteristic of a Zener diode?
-
A.
It allows current to flow in one direction only
-
B.
It can operate in reverse breakdown region
-
C.
It has a high forward voltage drop
-
D.
It is used for high-frequency applications
Solution
A Zener diode is designed to operate in the reverse breakdown region, providing voltage regulation.
Correct Answer:
B
— It can operate in reverse breakdown region
Learn More →
Q. What is the primary difference between N-channel and P-channel MOSFETs?
-
A.
The type of charge carriers
-
B.
The gate voltage requirements
-
C.
The physical size
-
D.
The switching speed
Solution
The primary difference is that N-channel MOSFETs use electrons as charge carriers, while P-channel MOSFETs use holes.
Correct Answer:
A
— The type of charge carriers
Learn More →
Q. What is the primary function of a differential amplifier?
-
A.
Amplify a single input
-
B.
Amplify the difference between two inputs
-
C.
Filter noise
-
D.
Rectify signals
Solution
A differential amplifier amplifies the difference between two input voltages.
Correct Answer:
B
— Amplify the difference between two inputs
Learn More →
Q. What is the primary function of a diode in communication systems?
-
A.
Amplification of signals
-
B.
Rectification of signals
-
C.
Modulation of signals
-
D.
Filtering of signals
Solution
Diodes are primarily used for rectification, converting AC signals to DC.
Correct Answer:
B
— Rectification of signals
Learn More →
Q. What is the primary function of a feedback resistor in an operational amplifier circuit?
-
A.
To increase gain
-
B.
To stabilize the output
-
C.
To limit current
-
D.
To reduce noise
Solution
The feedback resistor is used to set the gain of the operational amplifier, thus increasing the overall gain.
Correct Answer:
B
— To stabilize the output
Learn More →
Q. What is the primary function of a Zener diode?
-
A.
To rectify AC signals
-
B.
To allow current to flow in one direction
-
C.
To regulate voltage
-
D.
To amplify signals
Solution
A Zener diode is specifically designed to regulate voltage by allowing current to flow in the reverse direction when a certain voltage is reached.
Correct Answer:
C
— To regulate voltage
Learn More →
Q. What is the primary function of an operational amplifier (op-amp)?
-
A.
To rectify AC signals
-
B.
To amplify voltage signals
-
C.
To switch electronic signals
-
D.
To store charge
Solution
The primary function of an operational amplifier is to amplify voltage signals, often used in various analog applications.
Correct Answer:
B
— To amplify voltage signals
Learn More →
Showing 61 to 90 of 142 (5 Pages)
