QUIZ 2 DEE30052

The main features of a large-signal amplifier is the circuit's ________.

• A.power efficiency

• B.maximum power limitations

• C.impedance matching to the output device

• D.All of the above

You find that there is no output signal. You measure the dc voltage of Q₁ emitter and find it equal to 0 V. The trouble might be

• D₁ is shorted

• D₂ is shorted

• R₁ is open

• no trouble, everything is normal.

________ amplifiers primarily provide sufficient power to an output load to drive a speaker from a few watts to tens of watts.

• Small-signal

• Power

• Pushpull amplifier

• None of the above

Which of the following describe(s) a power amplifier?

• It can handle large power

• It can handle large current

• It does not provide much voltage gain

• All of the above

You find that this amplifier only shows the negative alternation at the output. The possible trouble might be that

• C₃ is shorted.

• BE₁ is open

• BE₂ is open

• R₁ is open.

What doyou mean by SMPS

• Single mode power supply

• Set multiple power supply

• Switched mode power supply

• Switched multiple power supply

Which of the following part is not a part of DC power supply?

• Load resistance

• rectifier

• regulator

• filter

Which of the following is the main advantage of SMPS over Linear power supply

• No transformer required

• higher efficiency

• feedback circuit

• no filter required

The working og SMPS is based on

• Integral control principle

• Frequency control principle

• Chopper principle

• Phase control principle

SMPS is used for

• Obtaining controlled DC power supply

• Swtching over one supply to another

• Obtaining AC voltage with low frequencies

• Obtaining AC voltage with high frequencies