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Electronics and Communication Engineering (ECE) Exam  >  Electronics and Communication Engineering (ECE) Test  >  GATE ECE (Electronics) Mock Test Series 2027  >  Test: Power Amplifier - Electronics and Communication Engineering (ECE) MCQ

GATE ECE (Electronics) Test: Power Amplifier Free Online Test 2026


MCQ Practice Test & Solutions: Test: Power Amplifier (10 Questions)

You can prepare effectively for Electronics and Communication Engineering (ECE) GATE ECE (Electronics) Mock Test Series 2027 with this dedicated MCQ Practice Test (available with solutions) on the important topic of "Test: Power Amplifier". These 10 questions have been designed by the experts with the latest curriculum of Electronics and Communication Engineering (ECE) 2026, to help you master the concept.

Test Highlights:

  • - Format: Multiple Choice Questions (MCQ)
  • - Duration: 30 minutes
  • - Number of Questions: 10

Sign up on EduRev for free to attempt this test and track your preparation progress.

Test: Power Amplifier - Question 1
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The use of amplifier in a circuit is to _____________ for input signal.

Detailed Solution: Question 1

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.

Test: Power Amplifier - Question 2
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Unit of power rating of a transistor is expressed in ___________

Detailed Solution: Question 2

Power rating is the maximum power allowable to dissipate by a transistor beyond this point transistor may behave unlikely. This is expressed in watts.

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Test: Power Amplifier - Question 3
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Power amplifier directly amplifies ___________

Detailed Solution: Question 3

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.

Test: Power Amplifier - Question 4
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Transistor in power amplifier is ___________

Detailed Solution: Question 4

Transistor is an active device since transistor contains voltage sources which are necessary for amplification.

Test: Power Amplifier - Question 5
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Which of the following audio speaker will be hard to be driven by a power amplifier?

Detailed Solution: Question 5

If the resistance of the audio amplifier is less, the output power of the transistor will be high since output current is increasing. Hence to drive a 2ohm speaker amplifier needs double power that for a 4ohm speaker.

Test: Power Amplifier - Question 6
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The unwanted characteristics of amplifier output apart from the desired output is collectively termed as ___________

Detailed Solution: Question 6

The unwanted characteristics of amplifier output apart from desired output are collectively termed as distortion. This should be avoided.

Test: Power Amplifier - Question 7
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Which device was used for the amplification of audio signals before the invention of power amplifiers?

Detailed Solution: Question 7

Before the invention of power amplifier vacuum tubes are used for audio signal amplification which consumes large space and costly.

Test: Power Amplifier - Question 8
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Input stage of power amplifier is also called ___________

Detailed Solution: Question 8

Input stage of the power amplifier is also called the front end.

Test: Power Amplifier - Question 9
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For a perfect power amplifier output power rating will be ________ if the output impedance is halved.

Detailed Solution: Question 9

In the equation of power output for the power amplifier, the power is proportional to the square of the current and inversely proportional to the resistance. If the impedance is halved then power is doubled.

Test: Power Amplifier - Question 10
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The power rating of the amplifier is 100watts then the transistor can only operate at ___________

Detailed Solution: Question 10

The power rating is 100 W, and that is the maximum allowable power usage of a transistor, beyond which it may damage. If the power is less than 100W, the circuit operates. Near to 100W, the power may also be higher than 100W, hence that option is incorrect.

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About this Electronics and Communication Engineering (ECE) Practice Test

This test contains 10 MCQs on Power Amplifier with detailed solutions for each question. It is part of the GATE ECE (Electronics) Mock Test Series 2027 course on EduRev, designed to align with the current Electronics and Communication Engineering (ECE) syllabus. Each solution explains not just the correct answer but also gives you an understanding of the topic — not just to attempt the question but also help you prepare for the exam with practice.

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If you found this Power Amplifier MCQ Test helpful, you can further enhance your Electronics and Communication Engineering (ECE) preparation with in-depth courses on EduRev, for all the subjects and topics available in GATE ECE (Electronics) Mock Test Series 2027 course. The course offers:
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