Electronics and Communication Engineering (ECE) Exam  >  Electronics and Communication Engineering (ECE) Questions  >  A power amplifier delivers 250 watt output at... Start Learning for Free
A power amplifier delivers 250 watt output at 50% efficiency. If ambient temp. is 25°C and maxm allowable junction temp. is 150°C, then what is value of Maximum thermal resistance which can be tolerated.
  • a)
    1°C/mW
  • b)
    1°C/W
  • c)
    2°C/W
  • d)
     2°C/mW
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
A power amplifier delivers 250 watt output at 50% efficiency. If ambie...
View all questions of this test
Most Upvoted Answer
A power amplifier delivers 250 watt output at 50% efficiency. If ambie...

Calculating Maximum Thermal Resistance Tolerated:

- Given, output power = 250 W, efficiency = 50%, ambient temperature = 25°C, maximum allowable junction temperature = 150°C
- Efficiency = output power / input power
- Input power = output power / efficiency = 250 W / 0.5 = 500 W
- Power dissipated as heat = input power - output power = 500 W - 250 W = 250 W

Formula for Thermal Resistance:

- Thermal resistance (Rth) = (Tj - Ta) / P
- Where, Tj = junction temperature, Ta = ambient temperature, P = power dissipated as heat

Calculating Maximum Thermal Resistance:

- Given, Ta = 25°C, Tj = 150°C, P = 250 W
- Rth = (150°C - 25°C) / 250 W = 125°C / 250 W = 0.5°C/W

Conclusion:

- The maximum thermal resistance that can be tolerated is 0.5°C/W, which is equivalent to option 'B'.
Attention Electronics and Communication Engineering (ECE) Students!
To make sure you are not studying endlessly, EduRev has designed Electronics and Communication Engineering (ECE) study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Electronics and Communication Engineering (ECE).
Explore Courses for Electronics and Communication Engineering (ECE) exam

Top Courses for Electronics and Communication Engineering (ECE)

A power amplifier delivers 250 watt output at 50% efficiency. If ambient temp. is 25°C and maxm allowable junction temp. is 150°C, then what is value of Maximum thermal resistance which can be tolerated.a)1°C/mWb)1°C/Wc)2°C/Wd)2°C/mWCorrect answer is option 'B'. Can you explain this answer?
Question Description
A power amplifier delivers 250 watt output at 50% efficiency. If ambient temp. is 25°C and maxm allowable junction temp. is 150°C, then what is value of Maximum thermal resistance which can be tolerated.a)1°C/mWb)1°C/Wc)2°C/Wd)2°C/mWCorrect answer is option 'B'. Can you explain this answer? for Electronics and Communication Engineering (ECE) 2024 is part of Electronics and Communication Engineering (ECE) preparation. The Question and answers have been prepared according to the Electronics and Communication Engineering (ECE) exam syllabus. Information about A power amplifier delivers 250 watt output at 50% efficiency. If ambient temp. is 25°C and maxm allowable junction temp. is 150°C, then what is value of Maximum thermal resistance which can be tolerated.a)1°C/mWb)1°C/Wc)2°C/Wd)2°C/mWCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Electronics and Communication Engineering (ECE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A power amplifier delivers 250 watt output at 50% efficiency. If ambient temp. is 25°C and maxm allowable junction temp. is 150°C, then what is value of Maximum thermal resistance which can be tolerated.a)1°C/mWb)1°C/Wc)2°C/Wd)2°C/mWCorrect answer is option 'B'. Can you explain this answer?.
Solutions for A power amplifier delivers 250 watt output at 50% efficiency. If ambient temp. is 25°C and maxm allowable junction temp. is 150°C, then what is value of Maximum thermal resistance which can be tolerated.a)1°C/mWb)1°C/Wc)2°C/Wd)2°C/mWCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Electronics and Communication Engineering (ECE). Download more important topics, notes, lectures and mock test series for Electronics and Communication Engineering (ECE) Exam by signing up for free.
Here you can find the meaning of A power amplifier delivers 250 watt output at 50% efficiency. If ambient temp. is 25°C and maxm allowable junction temp. is 150°C, then what is value of Maximum thermal resistance which can be tolerated.a)1°C/mWb)1°C/Wc)2°C/Wd)2°C/mWCorrect answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of A power amplifier delivers 250 watt output at 50% efficiency. If ambient temp. is 25°C and maxm allowable junction temp. is 150°C, then what is value of Maximum thermal resistance which can be tolerated.a)1°C/mWb)1°C/Wc)2°C/Wd)2°C/mWCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for A power amplifier delivers 250 watt output at 50% efficiency. If ambient temp. is 25°C and maxm allowable junction temp. is 150°C, then what is value of Maximum thermal resistance which can be tolerated.a)1°C/mWb)1°C/Wc)2°C/Wd)2°C/mWCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of A power amplifier delivers 250 watt output at 50% efficiency. If ambient temp. is 25°C and maxm allowable junction temp. is 150°C, then what is value of Maximum thermal resistance which can be tolerated.a)1°C/mWb)1°C/Wc)2°C/Wd)2°C/mWCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an ample number of questions to practice A power amplifier delivers 250 watt output at 50% efficiency. If ambient temp. is 25°C and maxm allowable junction temp. is 150°C, then what is value of Maximum thermal resistance which can be tolerated.a)1°C/mWb)1°C/Wc)2°C/Wd)2°C/mWCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice Electronics and Communication Engineering (ECE) tests.
Explore Courses for Electronics and Communication Engineering (ECE) exam

Top Courses for Electronics and Communication Engineering (ECE)

Explore Courses
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
10M+ students study on EduRev