Power Amplifiers MCQs : Here you will find MCQ Questions related to "Power Amplifiers" in Amplifiers. These Power Amplifiers MCQ Questions Will help you to improve your Amplifiers knowledge and will prepare you for various Examinations like Competitive Exams, Placements, Interviews and other Entrance Exmaniations
Power Transistor is ______ in size.
A. very small
Explanation: It is larger in size, in order to handle large powers.
A transistor that is manufactured to suit the purpose of power amplification is called as a ______________.
A. Power DC
B. Power loss
C. Power transistor
D. Power gain
Explanation: A transistor that is manufactured to suit the purpose of power amplification is called as a Power transistor
AC power output + losses is equal to?
A. AC power input
B. DC power input
C. AC power output
D. DC power output
Explanation: DC power input = AC power output + losses
The function of a voltage amplifier is to raise the voltage level of the signal
C. Can be true or false
D. Can not say
Explanation: True, The function of a voltage amplifier is to raise the voltage level of the signal.
A voltage amplifier is designed to achieve ___________ voltage amplification.
D. None of the above
Explanation: A voltage amplifier is designed to achieve maximum voltage amplification.
The base of the transistor should be thin and hence the value of β should be greater than?
Explanation: The base of the transistor should be thin and hence the value of β should be greater than 100.
The use of amplifier in a circuit is to _____________ for input signal.
A. Provide a phase shift
B. Provide strength
C. Provide frequency enhancement
D. Make circuit compatible
Explanation: The only use of amplifier in a circuit is to provide strength to signal. This may refer to an increase in current, voltage or power of the output w.r.t the input being applied.
Unit of power rating of a transistor is expressed in ___________
Explanation: Power rating is the maximum power allowable to dissipate by a transistor beyond this point transistor may behave unlikely. This is expressed in watts.
Power amplifier directly amplifies ___________
A. Voltage of signal
B. Current of the signal
C. Power of the signal
D. All of the above
Explanation: Power amplifier increases voltage as well as current. Increase in voltage or current is small compared to normal amplifiers. But power amplification has occurred ie. Voltage x current is more.
The voltage amplifiers are used for small signal voltages.
C. Can be yes or no
D. Can not say
Explanation: Yes, The voltage amplifiers are used for small signal voltages.