Homework Help is Here – Start Your Trial Now!
Engineering
Electrical Engineering
1) An SCR has a circuit fusing rating of 90 A²s. The device is being used in a circuit where it could be subjected to a 120 A surge. Determine the maximum allowable duration of current surge.

1) An SCR has a circuit fusing rating of 90 A²s. The device is being used in a circuit where it could be subjected to a 120 A surge. Determine the maximum allowable duration of current surge.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
See similar textbooks
icon
Related questions
Question

answer number 1 plzzz

I. Problem Solving: i. Solve the following problems. Solution is required. ii. Correct answer with no/incorrect solution will be considered INVALID. iii. Use exact values in your solutions. Final answers should be rounded off (at least) in two-decimal places format. (* 1) An SCR has a circuit fusing rating of 90 A²s. The device is being used in a circuit where it could be subjected to a 120 A surge. Determine the maximum allowable duration of current surge. 2) An SCR half-wave rectifier has a forward breakdown voltage of 150 V when a gate current of 1 mA flows in the gate terminal. If a sinusoidal voltage of 400 V peak is applied, determine: a. Firing delay angle (a). b. The average output voltage. c. The power output for a load resistor of 200-ohms. 3) Power of a 100W, 110 V lamp is to be varied by controlling the firing angle of an SCR in a half-wave rectifier circuit supplied with 110 Vac. At firing angle a = 60° a. What RMS voltage is measured in the lamp b. What RMS current is measured in the lamp 4) Referring to Figure below: (Assume values of VBE = VCE(sat) = 0.7 for both device) Given: Vin = 45 V, RA = 10 kn, RB + Rc = 10 kn a. Assuming the Shockley diode reached its breakover voltage and now is in on- state, determine the minimum resistance of the potentiometer (Rc) necessary to turn on the SCR if it requires a 3mA triggering current. b. Determine the gate current when the resistor Rc is adjusted to its maximum value, assuming all devices are turned on. RA Vin RB Rc R₂
Transcribed Image Text:I. Problem Solving: i. Solve the following problems. Solution is required. ii. Correct answer with no/incorrect solution will be considered INVALID. iii. Use exact values in your solutions. Final answers should be rounded off (at least) in two-decimal places format. (* 1) An SCR has a circuit fusing rating of 90 A²s. The device is being used in a circuit where it could be subjected to a 120 A surge. Determine the maximum allowable duration of current surge. 2) An SCR half-wave rectifier has a forward breakdown voltage of 150 V when a gate current of 1 mA flows in the gate terminal. If a sinusoidal voltage of 400 V peak is applied, determine: a. Firing delay angle (a). b. The average output voltage. c. The power output for a load resistor of 200-ohms. 3) Power of a 100W, 110 V lamp is to be varied by controlling the firing angle of an SCR in a half-wave rectifier circuit supplied with 110 Vac. At firing angle a = 60° a. What RMS voltage is measured in the lamp b. What RMS current is measured in the lamp 4) Referring to Figure below: (Assume values of VBE = VCE(sat) = 0.7 for both device) Given: Vin = 45 V, RA = 10 kn, RB + Rc = 10 kn a. Assuming the Shockley diode reached its breakover voltage and now is in on- state, determine the minimum resistance of the potentiometer (Rc) necessary to turn on the SCR if it requires a 3mA triggering current. b. Determine the gate current when the resistor Rc is adjusted to its maximum value, assuming all devices are turned on. RA Vin RB Rc R₂
Expert Solution
steps

Step by step

Solved in 3 steps with 2 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Link Budget of Satellite
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, electrical-engineering and related others by exploring similar questions and additional content below.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
Electrical Engineering
ISBN:
9780133923605
Author:
Robert L. Boylestad
Publisher:
PEARSON
Delmar's Standard Textbook Of Electricity
Delmar's Standard Textbook Of Electricity
Electrical Engineering
ISBN:
9781337900348
Author:
Stephen L. Herman
Publisher:
Cengage Learning
Programmable Logic Controllers
Programmable Logic Controllers
Electrical Engineering
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education
Fundamentals of Electric Circuits
Fundamentals of Electric Circuits
Electrical Engineering
ISBN:
9780078028229
Author:
Charles K Alexander, Matthew Sadiku
Publisher:
McGraw-Hill Education
Electric Circuits. (11th Edition)
Electric Circuits. (11th Edition)
Electrical Engineering
ISBN:
9780134746968
Author:
James W. Nilsson, Susan Riedel
Publisher:
PEARSON
Engineering Electromagnetics
Engineering Electromagnetics
Electrical Engineering
ISBN:
9780078028151
Author:
Hayt, William H. (william Hart), Jr, BUCK, John A.
Publisher:
Mcgraw-hill Education,
SEE MORE TEXTBOOKS