Question 1

Colpitts oscillator in the feedback section has an inductance of 4 mH and capacitors of 12 nH and 4 nH. Then the resonant frequency of Colpitts oscillator is:

Accepted Answer

A) 50.4 khz 
B) 35.1 khz 
C) 45.9 khz 
D) none of the mentioned 
A) 50.4 khz 
B) 35.1 khz 
C) 45.9 khz 
D) none of the mentioned

Question 2

In conventional amplifiers, a flat gain response is achieved at the cost of reduced gain. But this drawback can be overcome by using:

Accepted Answer

A) balanced amplifiers 
B) distributed amplifiers 
C) differential amplifiers 
D) none of the mentioned 
A) balanced amplifiers 
B) distributed amplifiers 
C) differential amplifiers 
D) none of the mentioned

Question 3

The criterion on which oscillations are produced in the oscillator circuit is called:

Accepted Answer

A) shannon's criteria 
B) barkhausen criteria 
C) colpitts criteria 
D) none of the mentioned 
A) shannon's criteria 
B) barkhausen criteria 
C) colpitts criteria 
D) none of the mentioned

Question 4

For Colpitts oscillator, the capacitors C1 and C2 in the feedback network are 1 µF and 25 µF respectively. Then the ? value of the transistor is:

Accepted Answer

A) 35 
B) 000.76 
C) 25 
D) 0.0025 
A) 35 
B) 000.76 
C) 25 
D) 0.0025

Question 5

A major advantage of differential amplifiers is:

Accepted Answer

A) high gain 
B) low input impedance 
C) higher output voltage swing 
D) none of the mentioned 
A) high gain 
B) low input impedance 
C) higher output voltage swing 
D) none of the mentioned

Colpitts oscillator in the feedback section has an inductance of 4 mH and capacitors of 12 nH and 4 nH. Then the resonant frequency of Colpitts oscillator is:

In conventional amplifiers, a flat gain response is achieved at the cost of reduced gain. But this drawback can be overcome by using:

The criterion on which oscillations are produced in the oscillator circuit is called:

For Colpitts oscillator, the capacitors C1 and C2 in the feedback network are 1 µF and 25 µF respectively. Then the ? value of the transistor is:

A major advantage of differential amplifiers is:

Antennas and Frequency Multipliers

Antenna and Transmission Line

Antenna Fundamentals and Characteristics

Antenna Arrays, Power Amplifiers, and Gunn Diodes

Microwave Devices and Their Operation: Gunn Diodes, Impatt Diodes, Klystron Tubes

Microwave Network Noise Figure, Oscillator Circuits, and Negative Resistance Devices

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Exam 6: RF Devices and Circuits

Colpitts oscillator in the feedback section has an inductance of 4 mH and capacitors of 12 nH and 4 nH. Then the resonant frequency of Colpitts oscillator is:

In conventional amplifiers, a flat gain response is achieved at the cost of reduced gain. But this drawback can be overcome by using:

The criterion on which oscillations are produced in the oscillator circuit is called:

For Colpitts oscillator, the capacitors C1 and C2 in the feedback network are 1 µF and 25 µF respectively. Then the ? value of the transistor is:

A major advantage of differential amplifiers is:

Antennas and Frequency Multipliers

Antenna and Transmission Line

Antenna Fundamentals and Characteristics

Antenna Arrays, Power Amplifiers, and Gunn Diodes

Microwave Devices and Their Operation: Gunn Diodes, Impatt Diodes, Klystron Tubes

Microwave Network Noise Figure, Oscillator Circuits, and Negative Resistance Devices

Filters