a) An alternating current varying sinusoidally with a frequency of 50HZ has an RMS value of 20A. Write down the equation for the instantaneous value at 0.0025 second. In addition, find the time measured from a positive maximum value, will the instantaneous current be 14.14A? b) Assume that all lamps are identical. In this condition from your opinion which lamp(s) having more brightness, and which Lamb(s) will be low brightness as shown in figure2. A В D

Power System Analysis and Design (MindTap Course List)
6th Edition
ISBN:9781305632134
Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Chapter2: Fundamentals
Section: Chapter Questions
Problem 2.7P: Let a 100V sinusoidal source be connected to a series combination of a 3 resistor, an 8 inductor,...
icon
Related questions
Question
2.
a) An alternating current varying sinusoidally with a frequency of
50HZ has an RMS value of 20A. Write down the equation for the
instantaneous value at 0.0025 second. In addition, find the time
measured from a positive maximum value, will the instantaneous
current be 14.14A?
b) Assume that all lamps are identical. In this condition from your
opinion which lamp(s) having more brightness, and which Lamb(s)
will be low brightness as shown in figure2.
A
В
E
Figure 2
c) The resistance of the wire used for telephone is 35N per kilometer
when the weight of the wire is 10kg per kilometer. If the specific
resistance of the material is 1.95 x 10-82 – m.
I.
What is the cross-sectional area of the wire?
I.
What will be the resistance of a loop to a subscriber 8km
from the exchange if wire of the same material but weighing
20kg per kilometer is used?
Transcribed Image Text:2. a) An alternating current varying sinusoidally with a frequency of 50HZ has an RMS value of 20A. Write down the equation for the instantaneous value at 0.0025 second. In addition, find the time measured from a positive maximum value, will the instantaneous current be 14.14A? b) Assume that all lamps are identical. In this condition from your opinion which lamp(s) having more brightness, and which Lamb(s) will be low brightness as shown in figure2. A В E Figure 2 c) The resistance of the wire used for telephone is 35N per kilometer when the weight of the wire is 10kg per kilometer. If the specific resistance of the material is 1.95 x 10-82 – m. I. What is the cross-sectional area of the wire? I. What will be the resistance of a loop to a subscriber 8km from the exchange if wire of the same material but weighing 20kg per kilometer is used?
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 3 steps with 3 images

Blurred answer
Knowledge Booster
Single phase AC circuit
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
Power System Analysis and Design (MindTap Course …
Power System Analysis and Design (MindTap Course …
Electrical Engineering
ISBN:
9781305632134
Author:
J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma
Publisher:
Cengage Learning