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Transistor Audio Power Amplifiers

If the gain versus frequency curve of a transistor amplifier is not flat, then there is distortion ?

Electrical Engineering Mcqs, Transistor Audio Power Amplifiers /
If the gain versus frequency curve of a transistor amplifier is not flat, then there is distortion ?

A. Amplitude
B. Intermodulation
C. Frequency
D. None of the above

If the gain versus frequency curve of a transistor amplifier is not flat, then there is distortion ? Read More »

Electrical Engineering Mcqs, Transistor Audio Power Amplifiers

If the power rating of a transistor is 1W and collector current is 100mA, then maximum allowable collector voltage is________________?

Electrical Engineering Mcqs, Transistor Audio Power Amplifiers /
If the power rating of a transistor is 1W and collector current is 100mA, then maximum allowable collector voltage is________________?

A. 1V
B. 100V
C. 20V
D. 10V

If the power rating of a transistor is 1W and collector current is 100mA, then maximum allowable collector voltage is________________? Read More »

Electrical Engineering Mcqs, Transistor Audio Power Amplifiers

What will be the collector efficiency of a power amplifier having zero signal power dissipation of 5 watts and a.c. power output of 2 watts ?

Electrical Engineering Mcqs, Transistor Audio Power Amplifiers /
What will be the collector efficiency of a power amplifier having zero signal power dissipation of 5 watts and a.c. power output of 2 watts ?

A. 20%
B. 80%
C. 40%
D. 50%

What will be the collector efficiency of a power amplifier having zero signal power dissipation of 5 watts and a.c. power output of 2 watts ? Read More »

Electrical Engineering Mcqs, Transistor Audio Power Amplifiers

The output signal voltage and current of a power amplifier are 5V and 200 mA; the values being r.m.s. What is the power output ?

Electrical Engineering Mcqs, Transistor Audio Power Amplifiers /
The output signal voltage and current of a power amplifier are 5V and 200 mA; the values being r.m.s. What is the power output ?

A. 1 W
B. 2 W
C. 4 W
D. None of the above

The output signal voltage and current of a power amplifier are 5V and 200 mA; the values being r.m.s. What is the power output ? Read More »

Electrical Engineering Mcqs, Transistor Audio Power Amplifiers

What turn ratio (Np/Ns) of transformer is required to match 4 O speaker to a transistor having an output impedance of 8000 O ?

Electrical Engineering Mcqs, Transistor Audio Power Amplifiers /
What turn ratio (Np/Ns) of transformer is required to match 4 O speaker to a transistor having an output impedance of 8000 O ?

A. 2
B. 7
C. 3
D. None of the above

What turn ratio (Np/Ns) of transformer is required to match 4 O speaker to a transistor having an output impedance of 8000 O ? Read More »

Electrical Engineering Mcqs, Transistor Audio Power Amplifiers

For the same a.c. power output as above, what should be the minimum power rating of transistor for class B operation?

Electrical Engineering Mcqs, Transistor Audio Power Amplifiers /
For the same a.c. power output as above, what should be the minimum power rating of transistor for class B operation?

A. 10 W
B. 4 W
C. 8 W
D. None of the above

For the same a.c. power output as above, what should be the minimum power rating of transistor for class B operation? Read More »

Electrical Engineering Mcqs, Transistor Audio Power Amplifiers