Power Amplifiers – 20

5555555555

20. A silicon power transistor is operated with a heat sink ( θSA = 1.5ºC/W). The transistor, rated at 150 W (25ºC), has θJC = 0.5º C/W, and the mounting insulation has θCS = 0.6 ºC/W. What is the maximum power that can be dissipated if the ambient temperature is 50ºC and TJmax = 200 ºC?

(a) 61.5 W
(b) 60.0 W
(c) 57.7 W
(d) 55.5 W

Answer
Answer : (c)
Explanation
Explanation : No answer description available for this question. Let us discuss.
Subject Name : Electronics Engineering
Exam Name : IIT GATE, UPSC ESE, RRB, SSC, DMRC, NMRC, BSNL, DRDO, ISRO, BARC, NIELIT
Posts Name : Assistant Engineer, Management Trainee, Junior Engineer, Technical Assistant
Electronics & Communication Engineering Books

Sale
Question Bank On Electronics & Communication Engineering
Book - question bank on electronics & communication engineering; Language: english; Binding: paperback
₹ 348
Sale
A Handbook for Electronics Engineering(Old Edition)
Made Easy Editorial Board (Author); Marathi (Publication Language); 620 Pages - 01/01/2015 (Publication Date) - Made Easy Publications (Publisher)
₹ 224
Sale
Basic Electronic Devices and Circuits
Patil (Author); English (Publication Language)
₹ 350
Sale
Electronic Circuits: Analysis and Design (SIE) | 3rd Edition
Neamen, Donald (Author); English (Publication Language); 1351 Pages - 08/25/2006 (Publication Date) - McGraw Hill Education (Publisher)
₹ 818

GATE 2023 Total InfoENGG DIPLOMAUGC NET Total Info
IES 2023 Total InfoPSUs 2022 Total InfoCSIR UGC NET Total Info
JAM 2023 Total InfoM TECH 2023 Total InfoRAILWAY 2022 Total Info

Related Posts

  • Power Amplifiers - 59555555555559. What is the maximum temperature rating for silicon power transistors? (a) 50º to 80º (b) 100º to 110º (c) 150º to 200º (d) 250º to 300º
    Tags: power, amplifiers, maximum, temperature, silicon, electronics, engineering
  • Power Amplifiers - 85555555555585. The ________ has the hottest temperature in a power transistor. (a) heat sink (b) case (c) junction (d) None of the above
    Tags: power, amplifiers, temperature, transistor, heat, sink, electronics, engineering
  • Power Amplifiers - 54555555555554. Determine what maximum dissipation will be allowed for a 70-W silicon transistor (rated at 25ºC) if derating is required above 25ºC by a derating factor of 0.6 W/ºC at a case temperature of 100º. (a) 25 W (b) 30 W (c) 35 W (d) 40 W
    Tags: power, amplifiers, maximum, silicon, transistor, rated, temperature, electronics, engineering
  • Power Amplifiers - 18555555555518. Class D operation can achieve power efficiency of over ________. (a) 90% (b) 78.5% (c) 50% (d) 25%
    Tags: power, amplifiers, electronics, engineering
  • Power Amplifiers - 62555555555562. The maximum efficiency of a transformer-coupled class A amplifier is ________. (a) 25% (b) 50% (c) 78.5% (d) 63.6%
    Tags: power, amplifiers, maximum, electronics, engineering

LEAVE A REPLY

Please enter your comment!
Please enter your name here